From an Isolable Acyclic Phosphinosilylene Adduct to Donor‐Stabilized SiE Compounds (E=O,S, Se) |
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| Authors: | Kerstin Hansen Dr Tibor Szilvási Dr Burgert Blom Dr Elisabeth Irran Prof?Dr Matthias Driess |
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| Institution: | 1. Department of Chemistry: Metalorganics and Inorganic Materials, Technische Universit?t Berlin, Stra?e des?17. Juni?135, Sekr. C2, 10623 Berlin (Germany), Fax: +(49)?3031429732;2. Department of Inorganic and Analytical Chemistry, Budapest University of Technology and Economics, Szent Gellért tér?4, 1111 Budapest (Hungary);3. Current address: Faculty of Humanities and Sciences, Maastricht University, Lenculenstraat?14, 6211 KR, Maastricht, P.O. Box 616, 6200 MD Maastricht (The Netherlands) |
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| Abstract: | Reaction of the arylchlorosilylene‐NHC adduct ArSi(NHC)Cl Ar=2,6‐Trip2C6H3; NHC=(MeC)2(NMe)2C:] 1 with one molar equiv of lithium diphenylphosphanide affords the first stable NHC‐stabilized acyclic phosphinosilylene adduct 2 (ArSi(NHC)PPh2), which could be structurally characterized. Compound 2 , when reacted with one molar equiv selenium and sulfur, affords the silanechalcogenones 4 a and 4 b (ArSi(NHC)(?E)PPh2, 4 a : E=Se, 4 b : E=S), respectively. Conversion of 2 with an excess of Se and S, through additional insertion of one chalcogen atom into the Si?P bond, leads to 3 a and 3 b (ArSi(NHC)(?E)‐E‐P(?E)Ph2, 3 a : E=Se, 3 b : E=S), respectively. Additionally, the exposure of 2 to N2O or CO2 yielded the isolable NHC‐stabilized silanone 4 c , Ar(NHC)(Ph2P)Si?O. |
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| Keywords: | multiple bonds olefin analogues phosphorus silicon zwitterions |
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