Sandwich Compounds of Transition Metals with Cyclopolyenes and Isolobal Boron Analogues
Identifieur interne : 003A68 ( Main/Exploration ); précédent : 003A67; suivant : 003A69Sandwich Compounds of Transition Metals with Cyclopolyenes and Isolobal Boron Analogues
Auteurs : Tatyana Gribanova ; Andrey Starikov ; Ruslan Minyaev [Russie] ; Vladimir Minkin [Russie] ; Matthew Siebert [États-Unis] ; Dean Tantillo [États-Unis]Source :
- Chemistry – A European Journal [ 0947-6539 ] ; 2010-02-15.
English descriptors
Abstract
A series of sandwich compounds of transition metals (M=Ni, Fe, Cr) with cyclic hydrocarbon (M(CH)n) and borane (M(BH2)n), ligands (including mixed hydrocarbon/borane sandwiches) has been studied using density functional theory (B3LYP/6‐311+G(df,p)). Multicenter bonding between the central metal atom and basal cycloborane rings provides stabilization to planar cycloborane species. Large negative NICS values allude to aromatic character in the cycloboranes similar to the analogous cyclic hydrocarbons. The ability of cycloborane sandwiches to stabilize attached carbocations, radicals and carbanions is also assessed.
Url:
DOI: 10.1002/chem.200902004
Affiliations:
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