Journal
CHEMICAL SCIENCE
Volume 7, Issue 3, Pages 2335-2341Publisher
ROYAL SOC CHEMISTRY
DOI: 10.1039/c5sc04504e
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Funding
- NSF [CHE-1359809]
- China Scholarship Council
- U.S. Department of Education
- ETH Zurich
- Swiss National Science Foundation (SNF)
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Sodium phosphaethynolate reacts with [MCl(PDI)] (M = Co, Ir; PDI = pyridinediimine) to give metallaphosphaketenes, which in the case of iridium rearranges into a dimetalladiphosphene, via CO migration from phosphorus to the metal. Two different bonding modes of the PCO anion to CAAC-coinage metal complexes [CAAC: cyclic (alkyl)(amino)(carbene)] are reported, one featuring a strong Au-P bond and the other an eta(2) coordination to copper. The gold complex appears to be mostly unreactive whereas the copper complex readily reacts with various organic substrates. A completely free PCO anion was structurally characterized as the [Cu(La)(2)](+) (OCP)(-) salt. It results from the simple displacement of the PCO unit of the cationic (CAAC) Cu(PCO) complex by a second equivalent of CAAC.
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