Mono and Bimetallic Complexes of Molybdenum(ii) and Tungsten(ii) Containing 4,4′-Diphenylenecarbonitrile
| Autor: | Patrick L. Veale, Paul K. Baker |
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| Rok vydání: | 2003 |
| Předmět: | |
| Zdroj: | Journal of Coordination Chemistry. 56:407-415 |
| ISSN: | 1029-0389 0095-8972 |
| DOI: | 10.1080/0095897031000092377 |
| Popis: | The complexes [MI2(CO)3(NCMe)2] (M=Mo or W) react in CH2Cl2 at room temperature with two equivalents of 4,4'-diphenylenecarbonitrile (dpc) to afford the new seven-coordinate complexes, [MI2(CO)3(4,4'-dpc-N)2] (1 and 2) in good yield. Equimolar quantities of [MI2(CO)3(NCMe)2] and PPh3 give [MI2(CO)3(NCMe)(PPh3)], which react in situ with 4,4'-dpc to yield the mono-4,4'-diphenylenecarbonitrile complexes, [MI2(CO)3(4,4'-dpc-N)(PPh3)] (3 and 4). Treatment of the bis(alkyne) complexes, [WI2(CO)(NCMe)(η 2-RC2R)2] (R=Me and Ph) with one equivalent of 4,4'-dpc in CH2Cl2 at room temperature affords the acetonitrile displaced products, [WI2(CO)(4,4'-dpc-N)(η 2-RC2R)2] (5 and 6). Reaction of equimolar quantities of [WI2(CO)(NCMe)(η 2-PhC2Ph)2] and 2 in CH2Cl2 at room temperature gives the 4,4'-dpc-bridged complex, [WI2(CO){WI2(CO)3(4,4'-dpc-N)(4,4'-dpc- N,N')}(η 2-PhC2Ph)2] (7) in good yield. Similarly, equimolar amounts of [WI2(CO)(NCMe)(η 2-RC2R)2] (R=Me and Ph) and (4) react in CH2Cl2 to afford the bimetallic com... |
| Databáze: | OpenAIRE |
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