3D Polythreading Research Articles

Two entangled photoluminescent MOFs of naphthalenedisulfonate and bis(benzimidazole) ligands for selective sensing of Fe3+

Two entangled MOFs based on rigid 1,6-naphthalenedisulfonate (1,6-NDS) mixed with flexible 1,4-bis(benzoimidazol-1-yl)butane (bbimb) ligands, [Zn(1,6-NDS)(bbimb)1.5]·2H2O (1) and [Cd2(1,6-NDS)2(bbimb)3(H2O)4]·2H2O (2), have been hydrothermally synthesized and characterized by single-crystal X-ray diffraction, powder X-ray diffraction, thermogravimetric and photoluminescent analyses. In 1, the Zn(II) ions are connected by bbimb ligands into a 2D (6,3) brick wall structure with the 1,6-NDS2- as dangling arms threaded into the voids of two adjacent layers up and down, and finally generates a 2D→3D polythreading framework. While the Cd(II) centers in 2 are connected by bbimb ligands into a 3D (10,3)-b network, and four (10,3)-b networks interweave to generate a 4-fold interpenetrating structure. 1 and 2 dispay similar photoluminescence at 343 nm (λex = 302 nm) and 342 nm (λex = 293 nm), respectively. And both MOFs display selective sensing of Fe3+ through the luminescent quenching experiments.

Entangled Uranyl Organic Frameworks with (10,3)-b Topology and Polythreading Network: Structure, Luminescence, and Computational Investigation.

Two 3D uranyl organic frameworks (UOFs) with entangled structures, (HPhen)2[(UO2)2L2]·4.5H2O (1) and [(UO2)3(H2O)4L2]·6H2O (2), were synthesized using a rigid tripodal linker (4,4',4″-(phenylsilanetriyl)tribenzoic acid, H3L). Compound 1 represents a 2-fold interpenetrating UOF with the unique (10,3)-b topology. Compound 2 is composed of three interlocked sets of identical singlet networks and thus exhibits a rare 3D polythreading network with (3,4)-connected topology. These two compounds have been characterized by IR, UV-vis, and photoluminescent spectroscopy. A density functional theory (DFT) study on the model compounds of 1 and 2 shows good agreement of structural parameters and U═O stretching vibrational frequencies with experimental data. The experimentally measured absorption bands were well reproduced by the time-dependent DFT calculations.

Structural diversity of Zn(ii) coordination polymers based on bis-imidazolyl ligands and 5-R-1,3-benzenedicarboxylate and their photocatalytic properties

Eight Zn(II) coordination polymers with 5-R-1,3-benzenedicarboxylate (R = H, Br) ligands and bis-imidazolyl ligands, {[Zn(1,3-BDC)(abimb)]·H2O}n (1), {[Zn(5-Br-1,3-BDC)(abimb)]2·0.5H2O}n (2), [Zn(1,3-BDC)(nbimb)]n (3), [Zn(5-Br-1,3-BDC)(nbimb)]n (4), {[Zn(1,3-BDC)(bimpa)]·2H2O}n (5), {[Zn(5-Br-1,3-BDC)(bimpa)]·2H2O}n (6), [Zn(1,3-BDC)(bimcz)]n (7) and [Zn(5-Br-1,3-BDC)(bimcz)]n (8) (1,3-H2BDC = 1,3-benzenedicarboxylate; 5-Br-1,3-H2BDC = 5-bromo-1,3-benzenedicarboxylate; abimb = 2-amine-4,4′-bis(1-imidazolyl)-bibenzene; nbimb = 2-nitro-4,4′-bis(1-imidazolyl)-bibenzene; bimpa = bis-(4-imidazol-1-yl-phenyl)-amine; bimcz = 3,6-bis(1-imidazolyl)-carbazole), have been synthesized and structurally characterized by elemental analysis, IR and X-ray single crystal diffraction. 1 and 6 exhibit 4-connected 3D frameworks with the Schlafli symbol (65·8). 2, 7 and 8 display 3D polythreaded networks based on 2D wrinkled layers. 3 and 4 show 3D polycatenated arrays based on 2D puckered layers. 5 has a 3D supramolecular structure consisting of two-fold parallel interwoven layers through hydrogen bonding and π⋯π stacking interactions. The solid state photoluminescence and photocatalytic properties of 1–8 were also investigated.

An unusual 2D → 3D polythreading framework based on (4)-c sql networks with arms: synthesis, structure and luminescence

An exceedingly rare 2D → 3D polythreading framework based on (4)-c sql networks with arms, [Cd(L)(bipy)2]n, has been prepared and characterized by X-ray diffraction analysis, and its solid state luminescence has been examined at room temperature.

Two highly connected frameworks and one polythreading architecture based on multidentate N-donor ligands: Syntheses, structures, characterizations and photoluminescent properties

Three coordination polymers based on multidentate N-donor ligands and polycarboxylate anions, namely, [Co3(4,4′-tmbpt)4(btc)2]·9.5H2O (1), [Ag4(4,4′-tmbpt)(btec)(H2O)2]·H2O (2) and [Zn(4,4′-tmbpt)(btec)0.5(H2O)]·0.5H2O (3) (4,4′-tmbpt=1-((1H-1,2,4-triazol-1-yl)methyl)-3,5-bis(4-pyridyl)-1,2,4-triazole, H3btc=1,3,5-benzenetricarboxylic acid, and H4btec=1,2,4,5-benzenetetracarboxylic acid) have been prepared under hydrothermal condition. Compound 1 displays a 3D (3,6,8)-connected framework with (4·62)(44·610·8)(414·612·82) topology. Compound 2 is a 3D (4,5,8)-connected framework with (43·62·8)(43·65·82)(48·62)(410·610·88) topology. Compound 3 exhibits a 2D→3D polythreading architecture. The photoluminescent spectra indicate that at room temperature, compounds 2 and 3 emit green and blue luminescence, respectively.

Syntheses, Structures and Optical Band Gaps of Two Coordination Polymers with 2D → 3D Polythreaded and Interdigitated Structures

Two coordination polymers [Cu(phen)(L)0.5(H2O)] (1) and [Ni2(phen)2(L)(H2O)0.5]·0.5H2O (2), where phen = 1,10-phenanthroline and H4L = 5,5′-(ethane-1,2-diyl)-bis(oxy)diisophthalic acid, have been synthesized under hydrothermal conditions. In complex 1, the L anions and the phen ligands connect the Cu(II) ions to form a layer. The phen ligands act as arms and thread into the adjacent layer, forming a 2D → 3D polythreaded architecture. In complex 2, the L anions and the phen ligands link the Ni(II) ions to form a layer. Further, the adjacent layers interdigitate each other through intermolecular π − π interactions to generate a 2D → 3D interdigitated architecture. Their structures have been determined by single-crystal X-ray diffraction analyses and further characterized by infrared spectra (IR) and elemental analyses. The thermal properties and optical band gaps of complexes 1 and 2 have also been investigated. Two interesting 2D → 3D polythreaded and interdigitated coordination polymers based on the flexible 5,5′ -(ethane-1,2-diyl)-bis(oxy)diisophthalic acid have been successfully synthesized, where the thermal properties and optical band gaps of the complexes have also been investigated. .

Syntheses, structures, characterization and photoluminescent properties of six coordination polymers based on multidentate N-donor ligands and polycarboxylate anions

A series of coordination polymers constructed from tripodal N-donor ligands and polycarboxylate anions, namely, [Ag6(3,4′-tmbpt)(btc)2]·2H2O (1), [Ag2(3,4′-tmbpt)(H2btec)]·H2O (2), [Ag2(4,4′-tmbpt)(Hbtc)]·H2O (3), [Cd3(4,4′-tmbpt)(btc)2(H2O)6]·7H2O (4), [Co(4,4′-tmbpt)(btec)0.5(H2O)] (5) and [Ni(4,4′-tmbpt)(btec)0.5(H2O)] (6), where 3,4′-tmbpt=1-((1H-1,2,4-triazol-1-yl)methyl)-3-(4-pyridyl)-5-(3-pyridyl)-1,2,4-triazole, 4,4′-tmbpt=1-((1H-1,2,4-triazol-1-yl)methyl)-3,5-bis(4-pyridyl)-1,2,4-triazole, H3btc=1,3,5-benzenetricarboxylic acid, and H4btec=1,2,4,5-benzenetetracarboxylic acid, have been hydrothermally prepared. Single crystal X-ray diffraction analyses indicate that compound 1 exhibits a 3D (3,4,6)-connected framework with (4·62)2(6·85)2(4·62·83·12) topology. Compound 2 has a 3D (3,4)-connected framework with (63)2(42·64)(42·63·8) topology. Compound 3 exhibits a 2D layer structure. Compound 4 shows a 3D 2-fold interpenetrating framework with (6·102) topology. Compounds 5 and 6 exhibit similar 2D→3D polythreading architectures. These compounds have been characterized by infrared spectra (IR), elemental analyses and powder X-ray diffraction (PXRD) analyses. The effects of the organic anions on the structures of the compounds have been discussed. Moreover, the photoluminescent properties of the compounds have been investigated.

PH‐Controlled topologies of two Co(II) complexes based on 5‐Nitro‐1,2,3‐benzenetricarboxylic acid and 1,6‐Bis(1,2,4‐triazole‐1‐yl)hexane

Two new Co(II) coordination polymers, [Co(Hnbta)(bth)]n (1) and {[Co3(nbta)2(bth)3(H2O)]·H2O}n (2), (H3nbta = 5‐nitro‐1,2,3‐benzenetricarboxylic acid and bth = 1,6‐bis(1,2,4‐triazole‐1‐yl)hexane), have been synthesized under different pH values through hydrothermal reactions. Both complexes were characterized by elemental analysis, IR spectra, thermogravimetric analysis (TGA), and single‐crystal X‐ray crystallography. Complex 1 exhibits a 3D polythreaded network based on 4‐connected sql 2D layer. Complex 2 has a (4,4,5)‐connected trinodal 3D pillar‐layered network with a (42·64)2(42·67·8)2(64·82) topology. Magnetic susceptibility measurements indicate that complexes 1 and 2 show weak antiferromagnetic interactions between the adjacent Co(II) ions.

New Entangled Coordination Networks Based on Charge‐Tunable Keggin‐Type Polyoxometalates

Investigation into a hydrothermal reaction system with transition-metal (TM) ions, 1,4-bis(1,2,4-triazol-1-lmethyl)benzene (BBTZ) and various charge-tunable Keggin-type polyoxometalates (POMs) led to the preparation of four new entangled coordination networks, [Co(II) (HBBTZ)(BBTZ)2.5 ][PMo12 O40 ] (1), [Cu(I) (BBTZ)]5 [BW12 O40 ]⋅H2 O (2), [Cu(II) (BBTZ)]3 [AsW(V) 3 W(VI) 9 O40 ]⋅10 H2 O (3), and [Cu(II) 5 (BBTZ)7 (H2 O)6 ][P2 W22 Cu2 O77 (OH)2 ]⋅6 H2 O (4). All compounds were characterized by using elemental analysis, IR spectroscopy, thermogravimetric analysis, powder X-ray diffraction, and single-crystal X-ray diffraction. The mixed valence of W centers in compound 3 was further confirmed by using XPS spectroscopy and bond-valence sum calculations. In the structural analysis, the entangled networks of 1-4 demonstrate zipper-closing packing, 3D polythreading, 3D polycatenation, and 3D self-penetration, respectively. Moreover, with the enhancement of POM negative charges and the use of different TM types, the number of nodes in the coordination networks of 1-4 increased and the basic metal-organic building motifs changed from a 1D zipper-type chain (in 1) to a 2D pseudorotaxane layer (in 2) to a 3D diamond-like framework (in 3) and finally to a 3D self-penetrating framework (in 4). The photocatalytic properties of compounds 1-4 for the degradation of methylene blue under UV light were also investigated; all compounds showed good catalytic activity and the photocatalytic activity order of Keggin-type species was initially found to be {XMo12 O40 }>{XW12 O40 }>{XW12-n TMn O40 }.

Temperature and pH driven self-assembly of Zn(ii) coordination polymers: crystal structures, supramolecular isomerism, and photoluminescence

Five Zn(II) coordination polymers, [Zn(mip)(btb)]·2H2O (1), [Zn2(mip)2(btb)1.5] (2), [Zn(moip)(btp)]·H2O (3), α-[Zn2(moip)2(btp)(H2O)2]·2H2O (4), β-[Zn2(moip)2(btp)(H2O)2]·2H2O (5), (H2mip = 5-methylisophthalic acid, H2moip = 5-methoxylisophthalic acid, btb = 1,4-bis(1,2,4-triazol-1-yl)butane, btp = 1,3-bis(1,2,4-triazol-1-yl)propane), have been obtained under hydrothermal conditions at 120 or 140 °C, respectively. Complexes 1 and 3 possess 3D supramolecular structures containing 1D tube-like chains. Complex 2 exhibits a (3,4,4)-connected trinodal 3D net with an unusual (6·82)(6·84·10)(6·85) topology. Complexes 4 and 5 are synthesized under similar conditions except for the pH values. Isomer 4 shows a 3D supramolecular network with a (82·10) topology. Isomer 5 features an extended 3D polythreaded network based on 2D bilayers, similar to that of 4. The construction of these complexes show that the temperature and pH value can modulate the resulting dimensionality and topology of the frameworks. Furthermore, the photoluminescence of complexes 1–5 has been investigated.

Hydrogen-bond directed 2D→3D polythreading of a new luminescent Cd(II) coordination polymer

Abstract Solvothermal reactions of Cd(II) salts with biphenyl-3,4′,5-tricarboxylic acid (H3L) and melamine (MA) afford a new coordination polymer, namely [Cd3(L)2(MA)2(H2O)2]n (1). Single crystal X-ray analysis reveals that compound 1 displays a new 2D → 3D polythreaded motif directed by intermolecular hydrogen bonds, in which large opened windows of each (3,6)-connected layer are threaded by two dangling MA molecules from adjacent layers in the opposite direction. In addition, the luminescent property of 1 was also investigated in the solid state at room temperature.

Syntheses, structures and photoluminescent properties of Zn(ii) and Cd(ii) coordination polymers with flexible tripodal triazole-containing ligands

Seven new coordination polymers, namely, [Zn2(o-bdc)2(L)2]·H2O (1), [Cd2(o-bdc)2(L)2]·6H2O (2), [Zn2(m-bdc)2(L)(H2O)] (3), [Cd2(m-bdc)2(L)]·2H2O (4), [Zn3(p-bdc)3(L)2]·H2O (5), [Zn2(btec)(L)2]·H2O (6) and [Cd2(btec)(L)2]·H2O (7) (o-H2bdc = 1,2-benzenedicarboxylic acid, m-H2bdc = 1,3-benzenedicarboxylic acid, p-H2bdc = 1,4-benzenedicarboxylic acid, H4btec = 1,2,4,5-benzenetetracarboxylic acid and L = 1,3,5-tris(1H-1,2,4-triazol-1-ylmethyl)-2,4,6-trimethylbenzene) have been hydrothermally synthesized and characterized by single-crystal X-ray diffraction. Compound 1 displays a 1D ladder structure. The neighboring ladders are further linked by π–π interactions to form a 2D supramolecular layer. Compound 2 shows a 3D (3,5)-connected framework with (63)(66·84) topology. Compound 3 exhibits a 2D layer structure. The layers are further connected by hydrogen-bonds to give rise to a 3D supramolecular architecture. Compound 4 shows a 3D (4,5)-connected (4·85)(44·62·84)2 net. Compound 5 displays a 2D layer with self-penetrating characters. Hydrogen bonds among the water molecules and the p-bdc anions further link the layers into a 3D supramolecular architecture. Compound 6 displays a 2D sheet with dangling arms. Each sheet is threaded by the dangling arms of two others, leading to an unusual 3D polythreading framework. Compound 7 shows a 3D (3,4,5)-connected framework with (62·8)2(65·8)(65·84·10)2 topology. The photoluminescent properties of compounds 1–7 have been investigated in detail.

Second ligands-assisted structural variation of entangled coordination polymers with polycatenated or polythreaded features

The self-assembly of transition metal salts with dicarboxylate ligands and second ligands afford a series of entangled coordination frameworks based on different metal clusters, namely, [Ni2(oba)2(bpy)2(H2O)2]·(DMF)(H2O)2 (1), [Ni2(oba)2(bpy)2(sa)(H2O)2]·(H2O)4 (2), [Cu5(oba)4(bpy)5(pca)2(H2O)4]·(H2O)9 (3), [Co3(oba)2(bpy)2(dbca)2]·(H2O)6 (4), [Co3(oba)2(dbca)2(H2O)] (5) and [Co3(oba)2(bph)2(SO4)]·(H2O)4 (6) [oba = 4,4′-oxydibenzoic acid; bpy = 4,4′-bipyridine; dbca = [1,1′-biphenyl]-2,2′-dicarboxylic acid; sa = 2-hydroxybenzoic acid; pca = picolinic acid; bph = (1E,2E)-1,2-bis(pyridin-4-ylmethylene)hydrazine]. Their structures were determined by single-crystal X-ray diffraction analysis and further characterized by elemental analysis, IR spectra and TG analyses. The auxiliary ligands play important roles in the formation of various entangled networks. 1 shows a box-like structure and is interlocked in a parallel fashion. Compound 2 represents the first example of a 3D polycatenated framework with different size arms. 3 displays 2D → 3D entangled polymers with polycatenated and polythreaded features based on 4,4-sql layers, which are formed by short/long alternate pillars. 4 shows an interesting framework of 2D → 3D polythreading feature with a Co3 cluster occupying the corner of the grid. However, 5 displays 3D polycatenation with a 1D zigzag metal chain. An unusual [Co3SO4] unit, which is linked by four bph ligands and four oba ligands, exhibiting an anionic three-dimensional (3D) framework is observed in 6. Compounds 4–6 display antiferromagnetic properties.

Auxiliary ligand-directed structural variation from 2D→3D polythreaded net to 3-fold interpenetrating 3D pillar-layered framework: Syntheses, crystal structures and magnetic properties

By auxiliary N-donor ligand-directed assembled, two entangled Co(II)-coordination nets have been constructed from 3,3',5,5'-azobenzenetetracarboxylic acid (H(4)abtc), which present a rare 2D→3D polythreading motif constructed from 2-fold (6,3) polymeric layers with thickness being 10.2 Å and a 3-fold interpenetrating pillar-layered framework based on linear trinuclear Co(II)-SBUs. In addition, two Co(II)-complexes both show an antiferromagnetic coupling by long organic spacers and H(2)O bridges, respectively.

Syntheses, structures and photoluminescence of five zinc(ii) coordination polymers based on 5-methoxyisophthalate and flexible N-donor ancillary ligands

A series of zinc(II) coordination polymers with 5-methoxyisophthalate (CH3O–H2ip) and five related flexible N-donor ancillary ligands, [Zn(CH3O-ip)(bime)0.5] (1), [Zn(CH3O-ip)(btx)]2·H2O (2), [Zn(CH3O-ip)(bix)]2 (3), Zn(CH3O-ip)(bib) (4), [Zn2(CH3O-ip)2(bbim)]2 (5) [bime = 1,2-bis(imidazol-1′-yl)ethane, btx = 1,4-bis(triazol-1-ylmethyl)benzene), bix = 1,4-bis(imidazol-1-ylmethyl)benzene, bib = 1,4-bis(2-methyl-imidazol-1-yl)butane, bbim = 1,1′-(1,4-butanediyl)bis(benzimidazole)], have been synthesized under hydrothermal conditions. Complexes 1–5 were structurally characterized by elemental analysis, infrared spectra and X-ray single-crystal diffraction. These complexes display different types of entanglements. Complex 1 features an extended 3D polythreaded network based on 2D coordination frameworks with a (3,4)-connected (42.6)(42.63.8) topology. Complex 2 shows a rare example of entangled coordination polymer containing both interpenetrating and polythreading features. Complex 3 manifests a highly corrugated 2D (4,4) layer. The layers are penetrated by each other to give rise to 3D polycatenations. While 4 and 5 exhibit three-fold interpenetrated 3D 4-connected (65.8) and (3,4)-connected (42.6)(42.6.102.12) topologies, respectively. These results suggest that both 5-methoxyisophthalate and N-donor ancillary ligands influence on the final resulting structures. Furthermore, luminescent properties and thermogravimetric properties of these complexes were investigated.

An unusual 2D→3D polythreading framework based on a long 1,10-phenanthroline derivative ligand

Abstract In the compound [Pb2(L)2(1,4-bdc)2]n (1), each Pb(II) atom is seven-coordinated by two nitrogen atoms from one L ligand, and five carboxylate oxygen atoms from three different 1,4-bdc ligands in a distorted monocapped triangular prismatic coordination geometry (1,4-bdc = 1,4-benzenedicarboxylate and L = dipyrido[7,6-a:6′,7′-c]-3-chloropyrido[2,3-b]quinoxaline). The Pb(II) atoms are connected together by the 1,4-bdc ligands to form a 2D network with large windows. The dangling L ligands of each layer are threaded into the voids of the two adjacent layers above and below, thus every window of each layer is threaded by only two dangling ligands that come from opposite directions. Finally, this unique simultaneous threading fashion of adjacent polymeric motifs gives the novel 2D → 3D polythreading array. In addition, the strong π–π interactions between the L ligands and the 1,4-bdc ligands of neighboring layers make great contribution to the structural stabilization of 1.

Hydrogen-bond-directed self-assembly of a novel 2D → 3D polythreading with finite components based on rigid ligand

The reactions of Cu(II) sulfate with 4-Amino-1,2,4-triazole (Atrz) and 1,3,5-Benzenetricarboxylic acid (H 3BTC) gave a novel interesting coordination polymer {[Cu 5(BTC) 4(HAtrz) 2(H 2O) 9]} n . The structure contains 2D undulated molecular layers. The BTC side arms can thread through the voids of adjacent polymeric units guided by strong intermolecular hydrogen bonding interactions, exhibiting an unusual 2D → 3D polythreading with finite components.

A series of coordination polymers based on reduced Schiff base multidentate anions and bis(imidazole) ligands: syntheses, structures and photoluminescence

Eleven new coordination polymers, namely, [Zn(L1)(bbi)]·0.5H2O (1), [Co(L1)(bbi)]·0.5H2O (2), [Cd(L1)(bbi)]·0.5H2O (3), [Zn(L2)(bbi)]·H2O (4), [Co(L2)(bbi)]·1.25H2O (5), [Cd(L2)(bbi)0.5(H2O)] (6), [Zn(L3)(bbi)]·H2O (7), [Co(L3)(bbi)]·H2O (8), [Cd(L3)(bbi)0.5(H2O)]·2H2O (9), [Zn(HL4)(bbi)] (10) and [Cd(HL4)(bbi)(H2O)]·1.5H2O (11), where H2L1 = 4-carboxy-phenylene-methyleneamino-2-benzyl acid, H2L2 = 4-carboxy-phenylene-methyleneamino-3-benzyl acid, H2L3 = 4-carboxy-phenylene-methyleneamino-4-benzyl acid, H3L4 = 4-carboxy-phenylene-methyleneimino-3,5-dibenzyl acid and bbi = 1,4-bis(1H-imidazol-1-yl)butane, have been synthesized under hydrothermal conditions. Compounds 1–3 are isomorphous, and show 2D two-fold interpenetrating 63-hcb networks. Compound 5 is isomorphous with 4. Compound 4 displays a 2D undulated layer structure. Adjacent layers are connected through hydrogen bonds to generate a 3D supramolecular architecture. The structure of compound 6 is an unusual 2D 2-fold parallel interpenetrating network with both polyrotaxane and polycatenane characters. 7 and 8 show 2D undulated sheet structures. The sheets are penetrated by each other to give rise to 3D polycatenations. The structure of compound 9 is an intriguing 2D self-penetrating network. Further, the π–π interactions among the L3 anions link the 2D networks into a 3D supramolecular assembly. Compound 10 displays a corrugated 2D (4,4) sheet with dangling arms. Each sheet is threaded by the dangling arms of two others, leading to an unusual 3D polythreading framework. The structure of compound 11 is a 3D (3,4)-connected framework with (42·6)(42·6·123) topology. The thermogravimetric and luminescent properties have also been studied for the compounds.

A new type of entangled motif: from 2D polyrotaxane layers to a 3D polythreaded framework

A new type of 3D entangled motif constructed from 2D polyrotaxane layers has been synthesized and characterized, which represents the first example of a 2D → 3D polythreaded framework with both polyrotaxane and polypeseudo-rotaxane character.

Copper(ii) 5-methoxyisophthalate coordination polymers incorporating dipyridyl co-ligands: syntheses, crystal structures, and magnetic properties

Hydrothermal reactions of mixed ligands 5-methoxyisophthalate (CH(3)O-H(2)ip) and dipyridyl with Cu(OAc)(2).2H(2)O afford five new coordination polymers, including {[Cu(CH(3)O-ip)(bpa)].H(2)O}(n) (1), [Cu(2)(CH(3)O-ip)(2)(bpa)(0.5)(H(2)O)](n) (2), [Cu(2)(CH(3)O-ip)(2)(bpp)(H(2)O)](n) (3), {[Cu(3)(CH(3)O-ip)(3)(bpp)(2)(H(2)O)].3H(2)O}(n) (4) and [Cu(4)(CH(3)O-ip)(3)(bpe)(OH)(2)](n) (5) (bpp = 1,3-di(4-pyridyl)propane, bpa = 1,2-bi(4-pyridyl)ethane, and bpe = 1,2-di(4-pyridyl)ethylene). Compound 1 consists of CH(3)O-ip anion-bridged 1D Cu(II) chains that are linked by trans-bpa into a 2D layer. Compound 2 is a 2D (4,4) layer that is connected by CH(3)O-ip anions. The gauche bpa in 2 lies in the cavity and meets the coordination requirement of the paddle-wheel dimeric copper unit. Compound 3 is an extended 3D polythreading network consisting of 2D (4,4) motifs with dangling bpp lateral arms. Compound 4 exhibits a 3D (4,6)-connected self-penetrating (6(5).8)(6(14).8) network that is composed of binuclear and mononuclear metal nodes. Compound 5 exhibits a 3D network with the tetranuclear [Cu(4)(mu(3)-OH)(2)](6+) cluster acting as nodes, which is constructed by the interconnection of 2D helical layers via bpe pillars. The results of magnetic determination show that the syn-anti carboxylato bridges in our cases induce a weak antiferromagnetic interaction in 1, and the syn-syn carboxylato bridge in 3 and 4 mediates a strong antiferromagnetic interaction.