X-ray Crystal Structure Of Cis Research Articles

Synthesis and X-ray crystal structure of cis-(CO) 4Cr[(Me 3SiN)C(Ph)(NHPPh 2)

The interaction of (Ph 2PN)C(Ph)[N(SiMe 3) 2] with one equivalent of C 7H 8Cr(CO) 4 in diethyl ether gave cis-(CO) 4Cr[(Me 3SiN)C(Ph)(NHPPh 2)] in good yield. The compound has been fully characterized by analytical, spectroscopic and X-ray diffraction methods. The NH proton of the bidentate iminophosphine ligand undergoes facile deuterium exchange with D 2O at ambient temperature. A 1,3-silyl shift mechanism has been proposed for the formation of the product.

Mechanistic and Stereochemical Investigation of Imino Ethers Formed by Alcoholysis of Coordinated Nitriles: X-ray Crystal Structures of cis- and trans-Bis(1-imino-1-methoxyethane)dichloroplatinum(II)

Mechanistic and Stereochemical Investigation of Imino Ethers Formed by Alcoholysis of Coordinated Nitriles: X-ray Crystal Structures of cis- and trans-Bis(1-imino-1-methoxyethane)dichloroplatinum(II)

Organometallic dioxo-, and oxo-thio- and dithio-tungsten(VI) complexes of hydrotris(3,5-dimethylpyrazolyl)borate

Reactions of cis-[{HB(Me2pz)3}WO2Cl] with Grignard reagents RMgX (R = Me, Et, CH2Ph, Ph; X = Cl or Br) in tetrahydrofuran, or boron sulfide in refluxing 1,2-dichloroethane, result in the formation of organometallic dioxo-WVI complexes, cis-[{HB(Me2pz)3}WO2R], and oxo-thio- and dithio-WVI complexes, cis-[{HB(Me2pz)3}WE2Cl](E2= OS, S2), respectively; the X-ray crystal structure of cis-[{HB(Me2pz)3}WO2Et], a rare example of a complex stable towards β-hydrogen elimination, is reported.

Co-ordination of a macrocyclic quadridentate tertiary amine ligand in the cis configuration: X-ray crystal structure of cis-[RuLCl2]ClO4(L = 1,4,7,10-tetramethyl-1,4,7,10-tetra-azacyclotridecane)

Reaction of K2[RuCl5(H2O)] with 1,4,7,10-tetramethyl-1,4,7,10-tetra-azacyclotridecane(L) in ethanol yielded cis-[RuLCl2]ClO4. The optical spectrum shows an intense pπ(Cl)→dπ(Ru) charge-transfer transition at 378 nm. The cis-[RuLCl2]+ cation [space group P21/n, a= 12.388(2), b= 12.740(2), c= 12.853(4)A, β= 96.68(2)°, Z= 4; R= 0.048 for 1 897 observed Mo-Kα data] is distorted octahedral with two Ru–Cl bonds cis to each other. The measured Ru–Cl distances [2.406(3) and 2.370(4)A] are unusually long for a ruthenium(III) system.

Complexes of naphthalene-2,3-diol (H 2ND) with group VI and group VIII metals, and the X-ray crystal structure of cis-(NH 4) 2[Mo 2O 5(ND) 2]·2H 2O

The new naphthalene-2,3-diolato (2 — ) (ND) complexes cis-[M 2O 5(ND) 2] 2−, cis-[MO 2(ND) 2] 2− (M = Mo, W), trans-UO 2(ND)·3H 2O, trans-[OsO 2(ND) 2] 2− and cis-M′(PPh 3) 2(ND) (M′= Pd, Pt) have been isolated. The X-ray crystal structure of cis-(NH 4) 2[MO 2O 5(ND) 2]·2H 2O has been determined. The crystals are orthorhombic, space group Pbca, a = 9.084(4), b = 13.625(4), c = 39.512(18) Å, Z = 8, R = 0.041 from 2554 observed reflections. The naphthalene-2,3-diolato ligands function as bidentate bridges, one oxygen atom of each spanning two cis-MoO 2 units while the other lies trans to a symmetric MoOMo bridge. The two naphthalene units are splayed by ca 18° and sheared by ca 24° with respect to each other. Raman, IR, 1H and 13C NMR spectra of the complexes have been recorded.

Organometallic complexes of osmium with sulfur-containing ligands. Synthesis of cis-[Os(N)(CH2SiMe3)2(SCH2CH2S)]- and cis-[Os(N)(CH2SiMe3)2(SCN)2]- and the synthesis and x-ray crystal structure of cis-[Os(N)(CH2SiMe3)2(2-S-NC5H4)

On prepare un nouveau complexe de l'osmium par la reaction de l'ethanedithiol-1,2 et de la triethylamine sur [N-nBu 4 ][Os(N)(CH 2 SiMe 3 ) 2 Cl 2 ], c'est-a-dire [N-nBu 4 ][Os(N)(CH 2 SiMe 3 ) 2 (SCH 2 CH 2 S)]. La substitution d'halogenes sur le complexe de depart par le thiocyanate de potassium (ou l'isothiocyanate) permet d'obtenir les complexes thiocyanato et isothiocyanato correspondants. De la meme facon le pyridinethiol-2 deplace les halogenes pour donner [Os(N)(CH 2 SiMe 3 ) 2 (SC 5 H 4 N) 2 ] dont la structure cristalline est etudiee

Synthesis and characterization of polypyridine ruthenium(II) complexes containing S-bonded thioether ligands. X-ray crystal structures of cis- and trans-bis(2,2'-bipyridine)bis(phenothiazine-S)ruthenium(II) hexafluorophosphates

Synthesis and characterization of polypyridine ruthenium(II) complexes containing S-bonded thioether ligands. X-ray crystal structures of cis- and trans-bis(2,2'-bipyridine)bis(phenothiazine-S)ruthenium(II) hexafluorophosphates

Binding mode of thiocyanate in palladium(II) complexes: x-ray crystal structure of cis-(isothiocyanato)(thiocyanato)bis(1-phenyl-3,4-dimethylphosphole)palladium(II)

Binding mode of thiocyanate in palladium(II) complexes: x-ray crystal structure of cis-(isothiocyanato)(thiocyanato)bis(1-phenyl-3,4-dimethylphosphole)palladium(II)

A complete model for the catalytic reduction of an alkyne to an alkene by a trinuclear osmium cluster: the X-ray crystal structure of cis-[Os3(CO)11{CF3(H)C:C(H)CF3}

[HOs3(CO)10{CF3C:C(H)CF3}] reacts with carbon monoxide to give the complexes cis- and trans-[Os3(CO)11–{CF3(H)C:C(H)CF3}], which react further with CO to liberate free alkenes and generate [Os3(CO)12]; an X-ray diffraction study of the cis-isomer is the first for a mono-substituted alkene derivative of a binary metal carbonyl cluster.