Heterometallic Nitrido-Carbonyl Clusters − Synthesis and Characterization of [Fe5MN(CO)14(C5H5)]2−, [Fe3M3N(CO)18]3− (M = Mo, W) and [HFe5MoN(CO)16]2− and Solid-State Structures of [Fe5MoN(CO)14(C5H5)]2−, [Fe5WN(CO)14(C5H5)]2−, and [Fe3Mo3N(CO)18]3−

✍ Scribed by Roberto Della Pergola; Massimiliano Branchini; Alessandro Fumagalli; Luigi Garlaschelli; Mario Manassero; Mirella Sansoni

• Publisher: John Wiley and Sons
• Year: 2000
• Tongue: English
• Weight: 326 KB
• Volume: 2000
• Category: Article
• ISSN: 1434-1948
• DOI: 10.1002/1099-0682(200008)2000:8<1759::aid-ejic1759>3.0.co;2-i

✦ Synopsis

The anionic clusters [Fe 5 MN(CO) 14 Cp] 2-[M = Mo (1) or W (2)] were synthesized from [Fe 4 N(CO) 12 ] -and [MCp(CO) 3 ] - in refluxing acetonitrile. The clusters [Fe 3 M 3 N(CO) 18 ] 3-[M = Mo (3) or W (4)] were prepared by reaction of [Fe 4 N(CO) 12 ] - with [M 2 (CO) 10 ] 2-under the same conditions. The molybdenum-containing anions 1 and 3 are obtained in higher yields than 2 and 4. The reaction of the tetranuclear iron cluster with [Mo(η 6 -Me 3 C 6 H 3 )(CO) 3 ] affords a mixture of [Fe 3 Mo 3 N(CO) 18 ] 3-and [HFe 5 MoN(CO) 16 ] 2-(5). The solid state structures of the clusters 1, 2 and 3 have been determined; they consist of six metal atoms, arranged in octahedral metal cages encapsulating a µ 6 -N ligand. The cyclo-