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Jorge Bravo Jesús Castro Ma Carmen Rodríguez-Martínez Stefano Antoniutti 《Journal of organometallic chemistry》2007,692(24):5481-5491
Hydride complex RuH2(PFFP)2 (1) [PFFP = (CF3CH2O)2PN(CH3)N(CH3)P(OCH2CF3)2] was prepared by allowing the compound RuCl4(bpy) · H2O (bpy = 1,2-bipyridine) to react first with the phosphite PFFP and then with NaBH4. Chloro-complex RuCl2(PFFP)2 (2) was also prepared, either by reacting RuCl4(bpy) · H2O with PFFP and zinc dust or by substituting triphenylphosphine with PFFP in the precursor complex RuCl2(PPh3)3. Hydride derivative RuH2(POOP)2 (3) (POOP = Ph2POCH2CH2OPPh2) was prepared by reacting compound RuCl3(AsPh3)2(CH3OH) first with the phosphite POOP and then with NaBH4. Depending on experimental conditions, treatment of carbonylated solutions of RuCl3 · 3H2O with POOP yields either the cis- or trans-RuCl2(CO)(PHPh2)(POOP) (4) derivative. Reaction of both cis- and trans-4 with LiAlH4 in thf affords dihydride complex RuH2(CO)(PHPh2)(POOP) (5). Chloro-complex all-trans-RuCl2(CO)2(PPh2OMe)2 (6) was obtained by reacting carbonylated solutions of RuCl3 · 3H2O in methanol with POOP. Treatment of chloro-complex 6 with NaBH4 in ethanol yielded hydride derivative all-trans-RuH2(CO)2(PPh2OMe)2 (7). The complexes were characterised spectroscopically and the X-ray crystal structures of complexes 1, 3, cis-4 and 6 were determined. 相似文献
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The review summarizes the results of studies aimed at developing the fundamentals for the design of a new class of nitric
oxide donors, viz., iron nitrosyl complexes with functionalized sulfur-containing ligands, which are structural analogs of the active sites
of non-heme nitrosyl iron-sulfur proteins. The structures, reactivities, and pharmacological activity in vitro and in vivo of these complexes are considered. 相似文献
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Conclusions Complexes have been prepared from cyclopentadienyltricarbonylmanganese and bidentate o-carborane phosphine, arsine, and mixed ligands.Translated from Izvestiya Akademii Nauk SSR, Seriya Khimicheskaya, pp. 1641–1644, July, 1984.The authors express their thanks to A. G. Ginzburg and P. V. Petrovskii for recording the IR and NMR spectra and help in the discussion of the results. 相似文献
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Chang-Gong Li Yong-Fang Li Jing-Yan Shang Tian-Jun Lou 《Transition Metal Chemistry》2014,39(4):373-378
Carbonyl substitution reactions of [μ-(SCH2)2CHC6H5]Fe2(CO)6 with bidentate phosphine ligands, cis-1,2-bis(diphenylphosphine)ethylene (cis-dppv) and N,N-bis(diphenylphosphine)propylamine [(Ph2P)2N-Pr-n], yielded an asymmetrically substituted chelated complex [(μ-SCH2)2CHC6H5]Fe2(CO)4(k 2-dppv) and a symmetrically substituted bridging complex [(μ-SCH2)2CHC6H5]Fe2(CO)4[μ-(PPh2)2N-Pr-n] under different reaction conditions. Both complexes were fully characterized by spectroscopic methods and by X-ray crystallography. Their electrochemical behaviors were observed by cyclic voltammetry, and the catalytic electrochemical reduction of protons from acetic or trifluoroacetic acid to give dihydrogen mediated by complex [(μ-SCH2)2CHC6H5]Fe2(CO)4(k 2-dppv) was investigated. 相似文献
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Monochelated organoantimony(V) complexes of the type R3Sb(OMe)L, where R = Me or Ph, and L is the anion of acetylacetone, 8-hydroxyquinoline, salicylaldehyde, o-hydroxyacetophenone or 2-hydroxy-1-naphthaldehyde have been obtained from triorganoantimony(V) dibromide and the sodium derivative of the ligands in a benzene-methanol mixture. Molecular weight determination in benzene reveals the monomeric nature of these complexes. IR and NMR data suggest that L acts as a bidentate ligand giving an octahedral environment for the antimony atom. 相似文献
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Addition of four equivalents of t-butyldiallylphosphine 1a to a solution of one equivalent of [(COE)2IrCl]2 in CHCl3 at low temperature produced two isomers of thecomplex [t-Bu(C3H5)PCH2CH=CH)]IrHCl(COE)-[PtBu(C3H5)2] ( 2a ), which evolve at 40°C to [t-Bu(C3H5)PCH2CH=CH)]IrCl(C8H15)[PtBu(C3H5)2] ( 3a ), by a hydride transfer from iridium to the cyclooctene (COE) ligand. It is reasonable that the unsaturation at the iridium center is fulfilled by interactions with the allyl moieties of the phosphine that are not metalated. This has been demonstrated by bubbling CO into a solution of 3a in CHCl3 at room temperature to obtain the carbonyl complex [t-Bu(C3H5)-PCH2CH=CH)]Ir(CO)Cl(C8H15)[PtBu(C3H5)2] ( 4a ). Under the same conditions, the reaction of diisopropylamindiallylphosphine 1b and anisyldiallylphosphine 1c afforded a mixture of isomers 3b and 3c , respectively. These results show that diallylphosphines can be considered to be a new family of bidentate ligands. Finally, the reaction of these phosphines with [(COD)IrCl]2 (COD = 1,5 cyclooctadiene) shows the formation of tetracoordinated iridium (I) complexes IrCl(COD)(PR3), which are thermally stable. © 1998 John Wiley & Sons, Inc. Heteroatom Chem 9:253–259, 1998 相似文献
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《Journal of organometallic chemistry》1986,315(2):165-169
The synthesis of the low-spin cationic complexes [Co(P-SR)2] (BF4)2 (P-SR = Ph2PCH2SR) and its reaction with CO to form the cobalt(I) carbonyl complexes [Co(CO)2(P-SR)2]BF4 are described. The chemical and spectroscopic properties of the complexes are presented and the stoichiometry and mechanism of the carbonylation reaction discussed. 相似文献
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M. Pilar Gamasa Mariano Laguna Daniel Miguel Víctor Riera 《Transition Metal Chemistry》1981,6(6):374-376
Summary Bidentate ligands can readily replace acetone in thefac-[Mn(CO)3(chel)(OCMe2)]+ complexes or the perchlorate group fromfac-[Mn(CO)3(chel)(OClO3)] yieldingfac-[Mn(CO)3(chel)(L-L)]+ or [{fac-Mn(CO)3(chel)}2(L-L)]2+ [chel = 1,10-phenanthroline (phen), 2,2-bipyridine (bipy), 1,2-bis(diphenylphosphine)ethane (dpe); L-L = bis(diphenylphosphine)methane (dpm), dpe, 1,4-bis(diphenylphosphine)butane (dpb), succinonitrile (suc), and glutaronitrile (glu)]. Some of these mononuclear complexes are precursors for binuclear complexes which are linked by bridging phosphines or nitriles. 相似文献