Alkynylselenolatoalkylidynes (LnMC–Se–CCR) as building blocks for mixed metal/main-group extended frameworks
| Autor: | Benjamin J. Frogley, Tobias L. Genet, Anthony F. Hill, Chee S. Onn |
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| Rok vydání: | 2019 |
| Předmět: | |
| Zdroj: | Dalton Transactions. 48:7632-7643 |
| ISSN: | 1477-9234 1477-9226 |
| DOI: | 10.1039/c9dt01504c |
| Popis: | The reactions of [W(CBr)(CO)2(Tp*)] (Tp* = hydrotris(3,5-dimethylpyrazol-1-yl)borate) with lithium alkynylselenolates LiSeCCR (R = SiMe3, SiiPr3, nBu, tBu, Ph, p-tolyl) afford the alkynylselenolatoalkylidyne complexes [W(CSeCCR)(CO)2(Tp*)]. Desilylation of the SiMe3 complex furnishes the parent [W(CSeCCH)(CO)2(Tp*)], which may be further derivatised by deprotonation and treatment with triphenylcarbenium or triphenylmetal chlorides to give mixed-heteroatom products [W(CSeCCEPh3)(CO)2(Tp*)] (E = C, Si, Ge, Sn, Pb). This procedure extends to dichlorosilanes, whereby the unusual bimetallic complexes [(Tp*)(CO)2WCSeCCSiRR′CCSeCW(CO)2(Tp*)] (R, R′ = Ph, CH3) are obtained, bridged by unsaturated units interrupted by two different main-group heteroatoms. Finally, the trimetallic analogues, [{(Tp*)(CO)2W(CSeCC)}3SiR] (R = Ph, Et), may be prepared in the same manner from appropriate organotrichlorosilanes. |
| Databáze: | OpenAIRE |
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