102982-83-2Relevant academic research and scientific papers
Syntheses and crystal structures of tungsten complexes with various ligands containing (1,3-dithioliumyl)diphenylphosphine
Yih, Kuang-Hway,Lee, Gene-Hsiang,Wang, Yu
, p. 2604 - 2610 (2008/10/08)
The (dithioalkylcarbonyl)diphenylphosphinotungsten complexes W(CO)5[PPh2(CS2R)] (2-5) (R = CH2C≡CH; CH2C≡CD; CH2C≡N; CH(CH3)C≡N) are accessible by the alkylation reactions of the
Syntheses and crystal structures of tungsten complexes containing various (thiazoliumyl)diphenylphosphine ligands
Yih, Kuang-Hway,Yeh, Sung-Chih,Lin, Ying-Chih,Lee, Gene-Hsiang,Wang, Yu
, p. 513 - 518 (2008/10/08)
Alkylation reactions at the S atom of the anionic PPh2C(=NPh)S- ligand coordinated to a tungsten pentacarbonyl group afford the neutral complexes W(CO)5PPh2C(=NPh)SR (4, R = CH2C≡CH; 5, R = CH2C≡N; 6, R = CH2CONH2; 7, R = CH2CH=CH2; 8, R = CH2CO2-Me). Protonation of 4 with HBF4 at room temperature causes cyclization to the cationic complex W(CO)5PPh2[CSCH2C(CH2)NPh]BF 4 (10), which contains a (thiazoliumyl)diphenylphosphine ligand. Similarly, protonation reactions of 5 and 6 with HBF4 give the cationic complex [W(CO)5PPh2CSCHC(NH2)NPh]BF4 (11) and the neutral complex W(CO)5PPh2CSCHC-(OBF3)NPh (12), respectively, both of which contain (thiazoliumyl)diphenylphosphine ligands. The structures of 10 and 12 are determined by X-ray diffraction analyses.
Reactions of Coordinated Ligands, XV. Ligand Properties of Complexes of Lithium Organophosphides (CO)nM(RR'PLi)m (M = Ni, Cr, Mo, W; n = 3, 4, 5; m = 1, 2) - Crystal and Molecular Structure of (-)(+)
Brauer, David J.,Hasselkuss, Gerd,Morton, Steven,Hietkamp, Sibbele,Sommer, Herbert,et al.
, p. 1161 - 1172 (2007/10/02)
Complexes of lithium organophosphides (CO)nM(RR'PLi)m obtained by deprotonation of the corresponding phosphine complexes (CO)nM(RR'PH)m are monodentate or bidentate ligands forming anionic binuclear complexes of the type (-) (A) or (2-) which may be isolated as (+) salts.Oxidation of the anions (2-) with 1,2-dibromoethane affords the neutral phosphido complexes (CO)4Mo(RR'P)Mo(CO)4 with reactive PH functional groups.The crystal and molecular structure of (-)(+) shows a distorted tetrahedral geometry at the central P atom of the complex anion.The Mo-P bond is unusual long (2.636(1) Angstroem), the phosphorus atom showing a pronounced trans effect on Mo-C bond lengths ((Mo-C)av. trans P 1.975(5) Angstroem, (Mo-C)av. cis P 2.043(6) (Mo(1)) or 2.038(6) Angstroem (Mo(2)), respectively). - Key words: Complexes of Lithium Organophosphides, Formation of Binuclear Complexes, Ligand Exchange, Oxidation
