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Titolo:
A new family of phosphido-bridged dinuclear ruthenium carbonyl complexes: synthesis of [Ru-2(CO)(6){mu-P(C(CH)(3)O)(2)}(mu-eta(1),eta(2)-C(CH)(3)O)] and its reactivity towards terminal alkynes
Autore:
Wong, WY; Ting, FL; Lam, WL;
Indirizzi:
Hong Kong Baptist Univ, Dept Chem, Kowloon Tong, Hong Kong, Peoples R China Hong Kong Baptist Univ Kowloon Tong Hong Kong Peoples R China es R China
Titolo Testata:
JOURNAL OF THE CHEMICAL SOCIETY-DALTON TRANSACTIONS
fascicolo: 20, , anno: 2001,
pagine: 2981 - 2988
SICI:
1472-7773(2001):20<2981:ANFOPD>2.0.ZU;2-4
Fonte:
ISI
Lingua:
ENG
Soggetto:
X-RAY STRUCTURES; LIGAND-SUBSTITUTED DERIVATIVES; TRANSITION-METAL COMPLEXES; C-4 POLYCARBON LIGANDS; SULFUR BOND-CLEAVAGE; R = PH; CLUSTER CHEMISTRY; CRYSTAL-STRUCTURES; ACETYLIDE COMPLEXES; DISSOCIATIVE CHEMISORPTION;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Physical, Chemical & Earth Sciences
Citazioni:
76
Recensione:
Indirizzi per estratti:
Indirizzo: Wong, WY Hong Kong Baptist Univ, Dept Chem, Waterloo Rd, Kowloon Tong, Hong Kong, Peoples R China Hong Kong Baptist Univ Waterloo Rd Kowloon Tong Hong Kong Peoples R China
Citazione:
W.Y. Wong et al., "A new family of phosphido-bridged dinuclear ruthenium carbonyl complexes: synthesis of [Ru-2(CO)(6){mu-P(C(CH)(3)O)(2)}(mu-eta(1),eta(2)-C(CH)(3)O)] and its reactivity towards terminal alkynes", J CHEM S DA, (20), 2001, pp. 2981-2988

Abstract

Thermal reaction of [Ru-3(CO)(12)] with tri(2-furyl) phosphine affords thedinuclear phosphido-bridged complex [Ru-2 (CO)(6) {mu -P(C(CH)(3)O)(2)}(mu-eta (1),eta (2)-C(CH)(3)O)] 1a in good yield via cleavage of Ru-Ru and P-C(furyl) bonds in the starting compounds and a small amount of the disubstitution product [Ru-3(CO)(10){P(C(CH)(3)O)(3)}(2)] 1b. The X-ray structural analysis of 1a shows that it contains a dissociated furyl fragment bonded tothe Ru-2 unit in a mu-eta (1),eta (2) coordination mode through one and one bond. This represents the rst structurally characterised example of such a furyl-bonded dinuclear organometallic complex. Complex 1a readily reacts with two equivalents of terminal alkynes HC=CR [R = Ph, p-C6H4Me, p-C6H4NO2, (C4H2S) C=CH or (C4H2S)(2)C=CH] by an interesting head-to-tail ynyl coupling with a furan group to form a series of phosphido-bridged diruthenium compounds containing a novel furyl-substituted C-4 hydrocarbyl chain of stoichiometry [Ru-2(CO)(4) {mu -P(C(CH)(3)O)(2)}{mu-eta (1),eta (1)(,)eta (2),eta (3)-RCC(H)C(R)C(H)C( CH)(3)O}] [R = Ph 2, p-C6H4 Me 3, p-C6H4NO2 4, (C4H2S) C=CH 5 or (C4H2S)(2)C=CH 6] in moderate to good yields, all of which have been characterised by spectroscopic and crystallographic methods. Assignments of the proton NMR spectra have been made with the aid of a 2-D H-1-H-1COSY technique. On reaction with the thienyl-linked diyne ligands, only one free C=CH group is involved in the coupling sequence while the other terminal alkyne functionality remains intact. All these new dinuclear complexesare electron precise with 34 cluster valence electrons.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 29/03/20 alle ore 16:29:51