36210-12-5Relevant academic research and scientific papers
Preparation and reactivity of stannyl and germyl complexes of cobalt
Albertin, Gabriele,Antoniutti, Stefano,Castro, Jesús
, p. 108 - 116 (2012)
Trichlorostannyl complex Co(SnCl3)(CO)2(PPh 3)2 (1) was prepared by allowing the chloro compound CoCl(CO)2(PPh3)2 to react with SnCl 2·2H2O. Instead, treatment of the iodo complex CoI(CO)2[PPh(OEt)2]2 with SnCl 2·2H2O afforded a mixture of Co(SnCl 2I)(CO)2[PPh(OEt)2]2 (2a) and Co(SnCl3)(CO)2[PPh(OEt)2]2 (2b) derivatives. Trichlorogermyl complexes Co(GeCl3)(CO) 2L2 (3, 4) [L = PPh3, PPh(OEt)2] were prepared by allowing halo compounds CoX(CO)2L2 (X = Cl, I) to react with GeCl2·dioxane. Treatment of trihalostannyl complexes Co(SnCl2X)(CO)2L2 (1, 2) (X = Cl, I) with NaBH4 in ethanol yielded tin trihydrido derivatives Co(SnH3)(CO)2L2 (5, 6). Instead, reaction of Co(SnCl2X)(CO)2[PPh(OEt)2] 2 (2) with LiAlH4 in THF yielded the hydrido CoH(CO) 2[PPh(OEt)2]2 (7). Trimethylstannyl Co(SnMe3)(CO)2L2 (8, 9) and trialkynylstannyl derivatives Co[Sn(C≡CPh)3](CO)2L2 (10, 11) were prepared by allowing trihalostannyl compounds Co(SnCl 2X)(CO)2L2 (1, 2) to react with MgBrMe and with Li+(PhC≡C)-, respectively, in THF. The complexes were characterised by spectroscopy (IR and 1H, 31P, 13C, 119Sn NMR) and by X-ray crystal structure determination of Co(SnCl2X)(CO)2[PPh(OEt) 2]2 (2) and Co(GeCl3)(CO)2[PPh(OEt) 2]2 (4).
