Synthesis and reactivity of germyl complexes of manganese and rhenium |
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| Authors: | Gabriele Albertin Stefano Antoniutti Jesús Castro |
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| Affiliation: | 1. Dipartimento di Scienze Molecolari e Nanosistemi, Università Ca’ Foscari Venezia, Dorsoduro 2137, 30123 Venezia, Italy;2. Departamento de Química Inorgánica, Universidade de Vigo, Facultade de Química, Edificio de Ciencias Experimentais, 36310 Vigo, Galicia, Spain |
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| Abstract: | Trichlorogermyl complexes M(GeCl3)(CO)nP5? n (1–4) [M = Mn, Re; n = 2, 3; P = PPh(OEt)2 (a), P(OEt)3 (b)] were prepared by allowing chloro compounds MCl(CO)nP5? n to react with an excess of GeCl2?dioxane in 1,2-dichloroethane. Treatment of compounds 1–4 with LiAlH4 in thf yielded trihydridegermyl derivatives M(GeH3)(CO)nP5?n (5–8), whereas treatment of the same complexes with NaBH4 in ethanol afforded triethoxygermyl derivatives M[Ge(OEt)3](CO)nP5?n (9–11). Trimethylgermyl compounds M(GeMe3)(CO)nP5?n (12, 13) and the alkynylgermyl derivative Mn[Ge(C CPh)3](CO)3[PPh(OEt)2]2 (14a) were also prepared by allowing trichlorogermyl compounds 1–4 to react with either MgBrMe or Li+CCPh?, respectively, in thf. Treatment of compound Re(GeCl3)(CO)3[PPh(OEt)2]2 (4a) with SnCl2?2H2O gave the stannyl-germyl derivative Re[GeCl2(SnCl3)](CO)3[PPh(OEt)2]2 (15a). The complexes were characterised by spectroscopy and X-ray crystal structure determination of 4a, 5a, and 13a. |
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