Trifluoromethanesulfonate Anions Research Articles

Robust Iron Coordination Complexes with N-Based Neutral Ligands As Efficient Fenton-Like Catalysts at Neutral pH

The homogeneous Fenton-like oxidation of organic substrates in water with hydrogen peroxide, catalyzed by six different metal coordination complexes with N-based neutral ligands, was studied at ambient conditions and initial pH 7, employing hydrogen peroxide as the terminal oxidant. At low catalyst concentration, the catalytic oxidative depletion of toluene achieved by selected catalysts was much more efficient than that obtained by the Fenton reagent at pH 3. The influence of pH, the water matrix and the catalyst/hydrogen peroxide concentration were investigated for the oxidation of toluene employing [FeCl2(bpmcn)] (1, bpmcn = N,N'-bis(2-pyridylmethyl)-N,N'-dimethyl-trans-1,2-diaminocyclohexane), the most efficient catalyst of the series. Moreover, the evolution of catalysts [FeCl2(bpmcn)] (1) and [Fe(OTf)2(Pytacn)] (3, Pytacn = 1-(2-pyridylmethyl)-4,7-dimethyl-1,4,7-triazacyclononane, OTf = trifluoromethanesulfonate anion) during the course of the reaction was also studied by electrospray ionization mass spectrometry (ESI-MS). The oxidation products derived from toluene oxidation were also analyzed. A plausible mechanism of toluene degradation using [FeCl2(bpmcn)] (1) and [Fe(OTf)2(Pytacn)] (3) as catalysts was proposed, which involves the coexistence of a metal-based path, analogous to that operating in organic media where substrate oxidation is executed by an iron(V)-oxo-hydroxo species, in parallel to a Fenton-type process where hydroxyl radicals are formed.

Synthesis, properties, and reactivity of a series of non-heme {FeNO}7/8 complexes: Implications for Fe-nitroxyl coordination

The biochemical properties of nitroxyl (HNO/NO−) are distinct from nitric oxide (NO). Metal centers, particularly Fe, appear as suitable sites of HNO activity, both for generation and targeting. Furthermore, reduced Fe–NO−/Fe–HNO or {FeNO}8 (Enemark–Feltham notation) species offer unique bonding profiles that are of fundamental importance. Given the unique chemical properties of {FeNO}8 systems, we describe herein the synthesis and properties of {FeNO}7 and {FeNO}8 non-heme complexes containing pyrrole donors that display heme-like properties, namely [Fe(LN4R)(NO)] (R = C6H4 or Ph for 3; and R = 4,5-Cl2C6H2 or PhCl for 4) and K[Fe(LN4R)(NO)] (R = Ph for 5; R = PhCl for 6). X-ray crystallography establishes that the Fe–N–O angle is ~155° for 3, which is atypical for low-spin square-pyramidal {FeNO}7 species. Both 3 and 4 display νNO at ~1700cm−1 in the IR and reversible diffusion-controlled cyclic voltammograms (CVs) (E1/2=~−1.20V vs. Fc/Fc+ (ferrocene/ferrocenium redox couple) in MeCN) suggesting that the {FeNO}8 compounds 5 and 6 are stable on the CV timescale. Reduction of 3 and 4 with stoichiometric KC8 provided the {FeNO}8 compounds 5 and 6 in near quantitative yield, which were characterized by the shift in νNO to 1667 and ~1580cm−1, respectively. While the νNO for 6 is consistent with FeNO reduction, the νNO for 5 appears more indicative of ligand-based reduction. Additionally, 5 and 6 engage in HNO-like chemistry in their reactions with ferric porphyrins [FeIII(TPP)X] (TPP = tetraphenylporphyrin; X = Cl−, OTf− (trifluoromethanesulfonate anion or CF3SO3−)) to form [Fe(TPP)NO] in stoichiometric yield via reductive nitrosylation.

A ΛΛΛΛ-M4L6 tetrahedral manganese cage: Stereoselective synthesis and captured anion exchange

Abstract A ΛΛΛΛ-M4L6 tetrahedral manganese cage with a captured perchlorate or trifluoromethanesulfonate anion was synthesized using a chiral quaterpyridine; the captured anion is exchangeable and the removal of the captured ClO4− from the cage was studied by theoretical calculation.

Distinct Molecular Motions in a Switchable Chromophore Dielectric 4‐N,N‐Dimethylamino‐4′‐N′‐methylstilbazolium Trifluoromethanesulfonate

AbstractMolecular motion associated with rotational and orientational phase transitions is one of the prominent structural strategies for assembling the functional materials such as artificial motors and tunable molecular dielectrics. Here, a new organic chromophore molecule, 4‐N,N‐dimethylamino‐4′‐N′‐methylstilbazolium trifluoromethanesulfonate (complex 1), which undergoes an exceptional order‐disorder phase transition at 322 K, is successfully synthesized. The single crystal X‐ray diffraction analysis, thermal analysis, and dielectric measurements are used to characterize its dielectric dynamic behaviors. The results reveal that 1 behaves as a molecular rotator with the obviously distorted bipyramidal geometry of trifluoromethanesulfonate anions. In addition to its disorderings, two very distinct motions of the anionic moieties are confirmed, namely the “earth rotation” of partial units and the “earth revolution” of the whole molecule. Such unique molecular motions are found to be mainly responsible for the order–disorder phase transition together with the abrupt dielectric anomaly and anisotropy. The charge‐transfer cationic parts enhance the molecular motions behaving as the stator and give rise to its excellent third‐order nonlinearities. The concept may allow for the remote control of molecular events to explore functional materials in organic chromophores.

Solutions of Alkylammonium and Bulky Anions: Description of Osmotic Coefficients within the Binding Mean Spherical Approximation

The binding mean spherical approximation (BiMSA) is used to describe osmotic coefficients for aqueous solutions of salts containing alkylammonium cations or bulky anions. A total of 35 salt solutions is accurately described at 25 °C over the whole concentration range, up to very high concentrations such as 20 mol·kg–1 for methylammonium chloride or 24 mol·kg–1 for ammonium thiocyanate. The ion diameters, the permittivity of solution, and the association constant are adjustable parameters within the BiMSA model. New diameter values are assigned to alkylammonium cations and bulky anions such as tetrafluoroborate, alkanesulfonates, methylsulfate, trifluoroacetate, or trifluoromethanesulfonate anions. Alkylammonium sizes are in reasonable agreement with literature values. Besides, association constants values obtained within the BiMSA model compare well with literature values when available.

Bis[μ-bis(diphenylphosphanyl)methane-κ2P:P′]bis[(isoquinoline-κN)silver(I)] bis(trifluoromethanesulfonate)–isoquinoline (1/1)

The title complex, [Ag2(C25H22P2)2(C9H7N)2](CF3SO3)2·C9H7N, was prepared by the reaction of silver(I) trifluoro­methane­sulfonate with isoquinoline and bis­(diphenyl­phosphan­yl)methane (dppm). The dinuclear mol­ecule is located about a center of inversion and the AgI atom is coordinated by two dppm P atoms and one isoquinoline N atom, forming an eight-membered metalla ring. In addition, in the asymmetric unit, there is a half-mol­ecule of isoquinoline located about a center of inversion. Since this mol­ecule does not possess this symmetry, for one position in the ring there is superposition of both a C atom of a C—H group and the isoquinoline N atom. In the structure, the Ag—P distances [2.4296 (9) and 2.4368 (9) Å] agree with the corresponding distances in related structures, while the Ag—N bond length [2.489 (3) Å] is slightly longer than that in related structures. On the other hand, the P—Ag—P angle [156.44 (3)°] is much larger than the corresponding angles in related structures. The trifluoro­methane­sulfonate anions do not coordinate to AgI atoms. As is usually found for these anions, the –CF3 group is disordered over two orientations [occupancies = 0.57 (12) and 0.43 (12)].

“Honeycomb” (6, 3) network constructed from 14-membered ring [Ag2(μ-dppb)2]: Synthesis, characterization and crystal structures of two silver(I) complexes of bis(diphenylphosphino)butane

Abstract Two new silver(I) complexes [Ag2(μ-dppb)2(CF3SO3)2] (1) and {[Ag2(dppb)3](CF3SO3)2•(4,4′-bipy)•(CH3CN)2}n (2) (dppb = bis(diphenylphosphino)butane, 4,4′-bipy = 4,4′-bipyridine) which contain dppb and trifluoromethanesulfonate anions have been synthesized and characterized by IR, X-ray crystallography, 1H NMR, 31P NMR spectroscopy and luminescence. Complex 1 and 4,4′-bipy reacted in the solution CH3CN to get complex 2. In the reaction, the 14-membered ring [Ag2(μ-dppb)2] of complex 1 is opened to form the “honeycomb” (6, 3) network structure of complex 2. In 2, each [Ag6(μ-dppb) 6] 6+ ring hosts two counterions, one 4,4′-bipy and two acetonitrile guest molecules.

P–ρ–T Measurements for 1-Alkyl-3-methylimidazolium-Based Ionic Liquids with Tetrafluoroborate and a Trifluoromethanesulfonate Anion

The present paper reports results of density measurements for 1-Cn-3-methylimidazolium-based tetrafluoroborates and trifluoromethanesulfonates with n = 2 and 4 and with n = 2, 4, and 6, respectively. For the tetrafluoroborates, the measurements were performed at temperatures from (285 and 220) K, respectively, to approximately 357 K. For the trifluoromethanesulfonates, the measurements were conducted at temperatures from 353 K down to the melting temperature of the substance. Data at nominal pressures of 1 MPa and from (10 to 60) MPa with a 10 MPa step were obtained. An isochoric apparatus was used, making possible density measurements at temperatures below 273.15 K. The combined uncertainty at the 95 % confidence level in the resultant density data due to the measuring procedure is estimated to be 1 kg·m–3, that is, about 0.1 % relative to the density value. Results of a quantitative analysis are reported of the effect of water and chloride anion impurities present in the sample on the density of the ion...

Induction of Thermotropic Bicontinuous Cubic Phases in Liquid-Crystalline Ammonium and Phosphonium Salts

Two series of wedge-shaped onium salts, one ammonium and the other phosphonium, having 3,4,5-tris(alkyloxy)benzyl moieties, exhibit thermotropic bicontinuous "gyroid" cubic (Cub(bi)) and hexagonal columnar liquid-crystalline (LC) phases by nanosegregation between ionophilic and ionophobic parts. The alkyl chain lengths on the cationic moieties, anion species, and alkyl chain lengths on the benzyl moieties have crucial effects on their thermotropic phase behavior. For example, triethyl-[3,4,5-tris(dodecyloxy)benzyl]ammonium hexafluorophosphate forms the thermotropic Ia3d Cub(bi) LC phase, whereas an analogous compound with trifluoromethanesulfonate anion shows no LC properties. Synchrotron small-angle diffraction intensities from the Ia3d Cub(bi) LC materials provide electron density maps in the bulk state. The resulting maps show convincingly that the Ia3d Cub(bi) structure is composed of three-dimensionally interconnected ion nanochannel networks surrounded by aliphatic domains. A novel differential mapping technique has been applied successfully. The map of triethyl-[3,4,5-tris(decyloxy)benzyl]ammonium tetrafluoroborate has been subtracted from that of the analogous ammonium salt with hexafluorophosphate anion in the Ia3d Cub(bi) phases. The differential map shows that the counteranions are located in the core of the three-dimensionally interconnected nanochannel networks. Changing from trimethyl- via triethyl- to tripropylammonium cation changes the phase from columnar to Cub(bi) to no mesophase, respectively. This sensitivity to the widened shape for the narrow end of the molecule is explained successfully by the previously proposed semiquantitative geometric model based on the radial distribution of volume in wedge-shaped molecules. The LC onium salts dissolve lithium tetrafluoroborate without losing the Ia3d Cub(bi) LC phase. The Cub(bi) LC materials exhibit efficient ion-transporting behavior as a result of their 3D interconnected ion nanochannel networks. The Ia3d Cub(bi) LC material formed by triethyl-[3,4,5-tris(decyloxy)benzyl]phosphonium tetrafluoroborate shows ionic conductivities higher than the analogous Ia3d Cub(bi) material based on ammonium salts. The present study indicates great potential of Cub(bi) LC nanostructures consisting of ionic molecules for development of transportation nanochannel materials.

Counter-ion effect on surfactant–DNA gel particles as controlled DNA delivery systems

The ability to entrap drugs within vehicles and subsequently release them has led to new treatments for a number of diseases. Based on an associative phase separation and interfacial diffusion approach, we developed a way to prepare DNA gel particles without adding any kind of cross-linker or organic solvent. Among the various agents studied, cationic surfactants offered particularly efficient control for encapsulation and DNA release from these DNA gel particles. The driving force for this strong association is the electrostatic interaction between the two components, as induced by the entropic increase due to the release of the respective counter-ions. However, little is known about the influence of the respective counter-ions on this surfactant–DNA interaction. Here we examined the effect of different counter-ions on the formation and properties of the DNA gel particles by mixing DNA (either single- (ssDNA) or double-stranded (dsDNA)) with the single chain surfactant dodecyltrimethylammonium (DTA). In particular, we used as counter-ions of this surfactant the hydrogen sulfate and trifluoromethane sulfonate anions and the two halides, chloride and bromide. Effects on the morphology of the particles obtained, the encapsulation of DNA and its release, as well as the haemocompatibility of these particles are presented, using counter-ion structure and DNA conformation as controlling parameters. Analysis of the data indicates that the degree of counter-ion dissociation from the surfactant micelles and the polar/hydrophobic character of the counter-ion are important parameters in the final properties of the particles. The stronger interaction with amphiphiles for ssDNA than for dsDNA suggests the important role of hydrophobic interactions in DNA.

Tetraaquabis[5-(3-pyridyl-κN)pyrimidine]zinc(II) bis(trifluoromethanesulfonate): a novel cationic complex and three-dimensional hydrogen-bonded network

The title compound, [Zn(C(9)H(7)N(3))(2)(H(2)O)(4)](CF(3)O(3)S)(2), contains an octahedral [ZnL(2)(H(2)O)(4)](2+) cationic complex with trans geometry (Zn site symmetry -1), and each 5-(3-pyridyl)pyrimidine (L) ligand is coordinated in a monodentate fashion through the pyridine N atom. In the extended structure, these complexes, with both hydrogen-bond acceptor (pyrimidine) and donor (H(2)O) functions, are linked to each other by intermolecular water-pyrimidine O-H···N hydrogen-bonding interactions, resulting in a double chain along the crystallographic a axis. The trifluoromethanesulfonate anions are integrated into the chains via O-H···O hydrogen bonds between the coordinated water and sulfonate O atoms. These double chains are associated into a novel three-dimensional network through interchain water-pyrimidine O-H···N hydrogen bonds. The asymmetric ligand plays an important role in constructing this unusual supramolecular structure.

Organotin(IV) trifluoromethanesulfonates chemistry: Isolation and characterization of a new di-n-butyl derivative presenting a Sn3O3 core

Reaction of the dimeric hydroxo di-n-butylstannane trifluoromethanesulfonato complex [n-Bu2Sn(OH)(H2O)(CF3SO3)]2 (1) with a mixture of anthracene (C14H10, Ant) and phenazine (C12H8N2, Phz) in dichloromethane at room temperature yielded the novel di-n-butyltin(IV) trifluoromethanesulfonate salt {[n-Bu2Sn(H2O)]2O·n-Bu2Sn(OH)2}(CF3SO3)2 (2), together with the co-crystallization of phenazinium trifluoromethanesulfonate salts ([C12H9N2][CF3SO3], PhzH) collected in the solid state in two distinct self-assembled architectures, 3 and 4, showing π–π stacking interactions, and involving the intercalation of free molecules of phenazine and anthracene, respectively. Complex 2 is a cationic trinuclear cluster, dihydrated, possessing a planar Sn3O3 core and surrounded by two non-coordinating trifluoromethanesulfonate anions. Each tin atom is coordinated to three oxygen atoms and also bound to two n-butyl ligands, thus exhibiting a trigonal bipyramidal geometry. In addition, oxygen atoms of CF3SO3 anions are involved in hydrogen bonding and long Sn–O distance interactions lead to the formation of a supramolecular two-dimensional network in the solid state.

Self-aggregation of nonionic surfactants in imidazolium-based ionic liquids with trifluoromethanesulfonate anion

Self-aggregation of polyoxyethylene (POE)-type nonionic surfactants in ionic liquids, 1-butyl- and 1-ethyl-3-methylimidazolium trifluoromethanesulfonate (bmimCF3SO3 and emimCF3SO3), was investigated by means of 1H-NMR chemical shift, dynamic light-scattering (DLS), and surface tension measurements. The surfactants showed no definite aggregate formation in bmimCF3SO3. This shows a remarkable contrast to the previous observation in bmimBF4 and bmimPF6, and demonstrates an importance of anion species to determine the property of ionic liquids as a solvent to support the self-assembly of amphiphilic compounds. On the other hand, the surfactants formed micelles in emimCF3SO3, which shows an importance of alkyl chain attached to imidazolium ring to determine the solvophobic interaction between surfactant hydrocarbon chains in imidazolium-based ionic liquids. The low solvophobicity of the surfactants to the ionic liquid composed of imidazolium cation with long alkyl chain is attributed to an affinity of the surfactant hydrocarbon chain to the imidazolium alkyl chain. The values of micellization parameters and surface adsorption parameters obtained for the surfactant solutions in emimCF3SO3 are reported.

Influence of Some Ionic Liquids Containing the Trifluoromethanesulfonate Anion on the Vapor–Liquid Equilibria of the Acetone + Methanol System

Isobaric vapor–liquid equilibria (VLE) for the binary systems acetone + 1-butyl-3-ethylimidazolium trifluoromethanesulfonate ([beim][triflate]), methanol + [beim][triflate], acetone + 1-butyl-1-methylpyrrolidinium trifluoromethanesulfonate ([bmpyr][triflate]), and methanol + [bmpyr][triflate] as well as the VLE for the acetone + methanol + [beim][triflate] and acetone + methanol + [bmpyr][triflate] ternary systems have been obtained at 100 kPa using a recirculating still. The addition of both ionic liquids to the solvent mixtures produced an important salting-out effect, and the azeotrope tended to disappear for small amounts of ionic liquid. The experimental binary data sets were independently fitted with the electrolyte nonrandom two-liquid (NRTL) model, and the parameters of the Mock's model were estimated for each binary system. These parameters were used to predict the ternary VLE, which agreed very well with the experimental ones.

Influence of Anion Structure on the Liquid−Liquid Equilibria of 1-Ethyl-3-methyl-imidazolium Cation Based Ionic Liquid-Hydrocarbon Binary Systems

Binary liquid−liquid phase equilibria for 15 systems containing an ionic liquid (1-ethyl-3-methyl-imidazolium thiocyanate, 1-ethyl-3-methyl-imidazolium trifluoroacetate, 1-ethyl-3-methyl-imidazolium trifluoromethanesulfonate) with a hydrocarbon (n-hexane, n-heptane, cyclohexane, benzene, toluene) were measured using dynamic method. The influence of the anion structure of 1-ethyl-3-methyl-imidazolium cation based ionic liquids on solubility of aliphatic and aromatic hydrocarbons is discussed. The liquid−liquid solubility data are reported only for the ionic-liquid-rich side of the phase diagram. It was found that the solubility of investigated hydrocarbons is the highest for ionic liquid with trifluoromethanesulfonate anion and the lowest for 1-ethyl-3-methyl-imidazolium thiocyanate.

The effects of cations and anions on the ionic conductivity of poly[bis(2-(2-methoxyethoxy)ethoxy)phosphazene] doped with lithium and magnesium salts of trifluoromethanesulfonate and bis(trifluoromethanesulfonyl)imidate

Lithium trifluoromethanesulfonate (LiTf), lithium bis(trifluoromethanesulfonyl)imidate (LiTFSI), magnesium trifluoromethanesulfonate (MgTf 2) and magnesium bis(trifluoromethane sulfonyl)imidate (MgTFSI 2) were dissolved in poly[bis(2-(2-methoxyethoxy)ethoxy)phosphazene] (MEEP) to compare the effect on solvent-free polymer ionic conductivity of monovalent versus divalent cations, and two anions with different degrees of dissociation. The polymer electrolytes with the bis(trifluoromethanesulfonyl)imidate anion had higher ionic conductivities even though the glass transition temperatures, which reflected polymer molecular motion, were higher than those of their counterparts with the trifluoromethanesulfonate anion. Furthermore, polymer electrolytes with magnesium salts achieved their maximum conductivity at lower salt concentrations than their counterparts with lithium salts. The temperature dependence of the ionic conductivity of the solid solutions was fitted to the Vogel–Tamman–Fulcher (VTF) equation. The pseudo-activation energy term, B, of the VTF equation showed a strong dependence on the anion present. This result suggests that the dominant mobile species is the anion, while the cation remains relatively bound to the polymer.

Bis(di-2-pyridylamine-κ2N2,N2′)silver(I) trifluoromethanesulfonate: polar arrangement of trifluoromethanesulfonate anions in a pseudo-centrosymmetric framework of coordination cations

The asymmetric unit of the title compound, [Ag(C(10)H(9)N(2))(2)]CF(3)SO(3) or [Ag(dpa)(2)]OTf (dpa is di-2-pyridylamine and OTf is the trifluoromethanesulfonate anion), contains two [Ag(dpa)(2)](+) coordination cations and two OTf anions. The coordination geometry of the Ag(I) atom is intermediate between square-planar and tetrahedral, with similar deformations at the two symmetry-independent metal centres. The dpa ligands coordinate in a bidentate chelating mode. The OTf anions are in the outer coordination sphere and bridge the coordination cations via N-H...O interactions to form two symmetry-independent hydrogen-bonded chains. The [Ag(dpa)(2)](+) cations are arranged via interactions involving the aromatic groups into a pseudo-centrosymmetric three-dimensional framework with two types of channels, each confining congeners of one of the symmetry-independent anions. The most interesting feature of this structure is its bulk polarity resulting from an approximately parallel alignment of the anions in the channels.

Trifluoromethanesulfonate Anion-linked Supramolecular Frameworks of Cucurbit[5]uril and Cucurbit[7]uril

Abstract Two crystals based on cucurbit[5]uril and cucurbit[7]uril, C30H30N20O10·2CF3SO3H·7.25H2O (1) and C42H42N28O14·CF3SO3H·8H2O (2) have been synthesized in trifluoromethanesulfonic acid and structurally determined by single-crystal X-ray diffraction analyses. These two crystal structures demonstrated that the highly-ordered trifluoromethanesulfonate anions play essential roles in the formation of three-dimensional supramolecular frameworks with 1D elliptical channels or circular channels.

Hydrothermal Synthesis of Two Cationic Bismuthate Clusters: An Alkylenedisulfonate Bridged Hexamer, [Bi6O4(OH)4(H2O)2][(CH2)2(SO3)2]3 and a Rare Nonamer Templated by Triflate, [Bi9O8(OH)6][CF3SO3]5

This paper reports the synthesis, characterization, and application of two cationic bismuthate clusters by anion templating. The compounds were synthesized under mild hydrothermal treatment and characterized by powder and single-crystal X-ray diffraction, infrared spectroscopy, and thermogravimetric analysis. The first material consists of a cationic hexanuclear bismuthate cluster octahedral in geometry and linked by 1,2-ethanedisulfonate molecules. This structure is thermally stable to about 235 degrees C. In the second compound, discrete cationic nonanuclear bismuthate clusters interact electrostatically with trifluoromethanesulfonate anions to pack into a nearly layered assembly. The material undergoes a transformation to Bi(2)O(3) upon loss of the triflate groups at about 385 degrees C. Both materials demonstrate the use of sulfonate groups for the anion-directed assembly of these rare cationic inorganic structures. The application of the 3D octahedral bismuth cluster material toward acidic heterogeneous catalysis is also reported.

Coordination Polymers and Networks Constructed from Bidentate Ligands Linked with Sulfonamide and Silver(I) Ions

Ligands that consist of pyridine rings linked by sulfonamide are simple and unique building blocks which form infinite polymers and networks via metal-coordination and hydrogen bonds (H-bonds). Single crystal X-ray analysis revealed that the complexation of bidentate ligands 1 and 2 bearing secondary sulfonamide with silver(I) ion results in the formation of [AgL2(OTf)] (1a), [Ag2(μ-L)2(OTf)2] (2a), and [AgL(OTf)]n (2b) complexes. The complex 1a assembled into extended one-dimensional (1D) chains through H-bonds between the N−H moieties of sulfonamide and nitrogen atom of pyridyl groups. These individual chains associated into a three-dimensional (3D) network structure via C−H···O interactions between pyridyl protons and the oxygen atom of sulfonamides. The complex 2a assembled into two-dimensional (2D) sheets through H-bonds between the N−H moieties of sulfonamide and H2O molecules. In the complex 2b, enantiopure continuous 1D chain [AgL(OTf)]n was formed. In these structures, the silver(I) centers have a T-shaped stereochemistry in which each ion is coordinated by two pyridyl groups of the ligand and a trifluoromethane sulfonate anion. In the complex of ligands 3 and 4 with an ethyl group on the nitrogen atom of sulfonamide and silver(I) ions, continuous 1D homochiral chains [AgL(OTf)]n (3a) and helical polymers [AgL]n(OTf)n (4a) were formed. Both 1D homochiral polymers contained a racemic mixture of right- and left-handed coordination polymers, which assemble into 2D sheets and 3D networks via Ag···Ag, Ag···O, and C−H···O interactions.