914799-79-4Relevant academic research and scientific papers
Synthesis of new half-sandwich ruthenium(II) complexes bearing alkenyl- and alkynylphosphane ligands
Diez, Josefina,Gamasa, M. Pilar,Gimeno, Jose,Lastra, Elena,Villar, Amparo
, p. 78 - 87 (2006)
Carbonyl substitution of the complex [RuI(η5-C 9H7)(CO)2] with the activated phosphanes Ph2PR (R = CH2CH=CH2, CH2CH 2CH=CH2, and C≡CPh) affords the complexes [RuI(η5-C9H7)(CO)(Ph2PR- κP)] [R = CH2CH=CH2 (1a), CH2CH 2CH=CH2 (1b), C≡CPh (1c)]. The reaction of the complex [RuCl(η5-C9H7)(PPh 3)2] with the corresponding phosphanes, in refluxing THF, gives the complexes [RuCl(η5-C9H7)(PPh 3)(Ph2PR-κP)] [R = CH2CH 2CH=CH2 (2b), C≡CPh (2c)] by substitution of PPh3. The cationic derivatives [Ru(η5-C 9H7)(L)(Ph2PR-κ3P,C,C)][X] [L = CO, X = SbF6, R = CH2CH=CH2 (3a), CH 2CH2CH=CH2 (3b); L = PPh3, X = PF6, R = CH2CH2CH=CH2 (4b)] have been prepared by treatment of the complexes 1a,b and 2b with a halide abstractor such as AgSbF6 or NaPF6, respectively. Deprotonation reactions of the complexes 3b and 4b with cesium carbonate have been carried out, giving rise to the neutral complexes [Ru(η5-C 9H7)-(L)(Ph2PCH2CH=CHCH 2-κ2P,C)] [L = CO (5a), PPh3 (5b)]. The reaction of complex 3a with MeCN generates the complex [Ru(η5- C9H7)(MeCN)(CO)(Ph2PCH2CH=CH 2-κP)][SbF6] (6). The vinylidene [Ru(η5-C9H7)(PPh3)(Ph 2PC≡CPh-κP)-{C=C(Ph)H}][PF6] (7) and allenylidene [Ru(η5-C9H7)(PPh 3)-(Ph2PC=CPh-κP)(C=C=CPh2)][PF 6] (8) derivatives have been synthesized by reaction of complex 2c with phenylacetylene or 1,1-diphenylprop-2-yn-1-ol, respectively. The structures of the derivatives 1c, 3a, and 4b have been determined by single-crystal X-ray diffraction analysis. Wiley-VCH Verlag GmbH & Co. KGaA, 2006.
