Abstract
Reduction of the V(III) (beta-(dimethylamino)ethyl)cyclopentadienyl dichloride complex [eta(5):eta(1-) C5H4(CH2)(2)NMe2]VCl2(PMe3) (1) with 1 equiv of Na/Hg yielded the V(II) dimer {[eta(5):eta(1)-C5H4(CH2)(2)NMe2]V(mu-Cl)}(2) (2). This compound reacted with diphenylacetylene in THF to give the V(II) alkyne adduct [eta(5):eta(1)-C5H4(CH2)(2)NMe2]VCl(eta 2-PhC CPh) (3). Further reduction of 2 with Mg in the presence of diphenylacetylene resulted in oxidative coupling of two diphenylacetylene groups to yield the diamagnetic, formally V(V), bent metallacyclopentatriene complex [eta(5):eta(1)-C5H4(CH2)(2)NMe2]V(C4Ph4) (4).
Original language | English |
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Pages (from-to) | 2316-2320 |
Number of pages | 5 |
Journal | Organometallics |
Volume | 27 |
Issue number | 10 |
DOIs | |
Publication status | Published - 26-May-2008 |
Keywords
- POLYMERIZATION BEHAVIOR
- PARAMAGNETIC-COMPLEXES
- BOROHYDRIDE COMPOUNDS
- CRYSTAL-STRUCTURE
- ANCILLARY LIGAND
- CARBON BONDS
- REACTIVITY
- ALKYNE
- TRIMERIZATION
- BIS(TRIMETHYLSILYL)ACETYLENE