Formation of Metalloheterocycles by Addition of Heteroallenes to the Electron-Rich Carbonyl Complex (W(eta-C5H5)2(CO))
Abstract
The reactions of W(eta-C5H5)2(CO) (1) with a range of hetero allenes establish that 4-membered metalloheterocycles can be formed by addition of heteroallenes to an electron rich neutral carbonyl complex. Metallocycloimides W(eta-C5H5)2(C(O)N(R)C(O) (2, R=CH3; 3, R=Ph) are formed by addition of methyl and phenyl isocyanate to 1, and the metallocycloacylamidine W(eta-C5H5)2(C(O) N(Ph)C(NPh) (4), is formed by addition of diphenylcarbodiimide to 1. In surprising contrast, addition of phenyl isothiocyanate to 1 leads to formation of a 4-membered metalloheterocycle determined by single crystal x ray diffraction (RW = 3.77%) to be the metallocyclothioacylamidine W(eta-C5H5)2(C(s) N(Ph)C(NPh) (5). Allenes, Carbonyl compounds.
Document Details
- Document Type
- Technical Report
- Publication Date
- Jan 05, 1989
- Accession Number
- ADA203473
Entities
People
- N. J. Cooper
- Peter Jernakoff
Organizations
- University of Pittsburgh