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Diazoalkanes in Low-Coordinate Iron Chemistry: Bimetallic Diazoalkyl and Alkylidene Complexes of Iron(II).

ABSTRACT: The addition of (trimethylsilyl)diazomethane and its conjugate base to iron ?-diketiminate precursors gives novel dinuclear complexes in which the bridges are either diazomethane derivatives or an alkylidene. One product is an unusual bridging alkylidene complex containing two three-coordinate iron(II) centers. On the other hand, syntheses using the deprotonated diazomethane give two bridging diazomethyl species with binding modes that have not been observed in iron complexes previously. In the presence of a coordinating tetrahydrofuran solvent, a diiron(II) compound with ?-N bridges rearranges to a more stable isomer with ?-N,C bridges, a process that is accompanied by a 1,3-shift of a silyl group.

SUBMITTER: Reesbeck ME 

PROVIDER: S-EPMC5499981 | biostudies-literature | 2017 Feb

REPOSITORIES: biostudies-literature

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Diazoalkanes in Low-Coordinate Iron Chemistry: Bimetallic Diazoalkyl and Alkylidene Complexes of Iron(II).

Reesbeck Megan E ME   Grubel Katarzyna K   Kim Daniel D   Brennessel William W WW   Mercado Brandon Q BQ   Holland Patrick L PL  

Inorganic chemistry 20170109 3

The addition of (trimethylsilyl)diazomethane and its conjugate base to iron β-diketiminate precursors gives novel dinuclear complexes in which the bridges are either diazomethane derivatives or an alkylidene. One product is an unusual bridging alkylidene complex containing two three-coordinate iron(II) centers. On the other hand, syntheses using the deprotonated diazomethane give two bridging diazomethyl species with binding modes that have not been observed in iron complexes previously. In the  ...[more]

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