Journal
ORGANOMETALLICS
Volume 40, Issue 12, Pages 1926-1933Publisher
AMER CHEMICAL SOC
DOI: 10.1021/acs.organomet.1c00241
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Funding
- Analytical Instrumentation Center, SPST, ShanghaiTech University [SPST-AIC10112914]
- National Natural Science Foundation of China [21801166]
- ShanghaiTech University
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The synthesis and characterization of nickel, cobalt, and iron complexes of the bis(phosphine)carbodicarbene (CDC) ligand 1 were successfully conducted, showcasing a range of first-row transition-metal compounds through three different methods. The products were characterized using spectroscopic methods and X-ray single-crystal diffraction analysis, revealing their respective structures and properties.
The synthesis and characterization of nickel, cobalt, and iron complexes of the bis(phosphine)carbodicarbene (CDC) ligand 1 is described. The square-planar complexes can be synthesized without the isolation of the deprotonated carbodicarbene ligand, and three different synthetic methods were used to make these first-row transition-metal compounds. The reaction between ligand 1-BPh4 and Ni(COD)(2) afforded the compound [(CDC)Ni(eta(1)-C8H13)][BPh4] (2-BPh4) via the insertion of COD into the Ni-H bond produced by cyclometalation. The complexes [(CDC)MCl](+) for nickel and cobalt were synthesized from the reaction of carbodicarbene ligand 1 with NiCl2 or CoCl2 in the presence of triethylamine. For the synthesis of the iron coordination complex of CDC ligand 1, Fe(2)Mes(4) was used to produce [(CDC)Fe-Mes] [BPh4] (5), an intermediate-spin Fe(II) compound. Complexes 3-7 were characterized by spectroscopic methods and X-ray single-crystal diffraction analysis.
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