Abstract
The base-free carbazolyl bromosilylene RSiBr (R = 1,8-bis(3,5-di-tert-butyl-phenyl)-3,6-di-tert-butyl-carbazolyl) reacts with (η2-C2H4)Pt(PPh3)2 and Pt(PCy3)2 to form platinasilacyclobutane R(Br)Si(C2H4)Pt(PPh3)2 (1) and silylene platinum complex R(Br)SiPt(PCy3)2 (2), respectively. When silylene complex 2 is treated with C2H4, the six-membered metallasilacycle R(Br)Si(C2H4)2Pt(PCy3)2 (3) is obtained. All compounds are characterised by XRD and multinuclear NMR spectroscopy.
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