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Synthesis and Characterization of Bora(Amino)Silylene-Coordinated Cu(I) Metallacycle
Asif Husain1, Bhupendra Goswami2, Akhil K Singh3
1Department of Chemistry, Indian Institute of Technology Roorkee, Roorkee, Uttarakhand, India.
Abstract:
We report a bora(amino)silylene-coordinated copper metallacycle [{LSi(NDipp(BPin))-Cu-Si(NtBuC(H)PhNtBu)(NDipp(BPin))}] (2) (L = PhC(NtBu)2). Complex 2 was isolated during attempts to prepare a silylene-coordinated copper hydride. Reaction of a (bis)silylene-copper-tert-butoxide intermediate with pinacolborane resulted in the ligand transformation via B─H bond activation and the transfer of a hydrogen atom to the ligand backbone. The complex 2 was characterized by multinuclear NMR spectroscopy and single-crystal x-ray diffraction studies. Preliminary theoretical calculations were performed to suggest a possible reaction pathway for the formation of complex 2.
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