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Volumn 2007, Issue 10, 2007, Pages 29-48

1,1,3,3-Tetrakis(alkylthio)-1,3-dilithio-2-silapropanes: Useful reagents for the synthesis of polysilacycloalkanes via dianionic ring formation

Author keywords

Dianion; Lithium; Polysilacycloalkane; Silicon

Indexed keywords


EID: 33846188174     PISSN: 1551-7012     EISSN: 14246376     Source Type: Journal    
DOI: 10.3998/ark.5550190.0008.a05     Document Type: Article
Times cited : (10)

References (47)
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    • Crystals of 8a suitable for X-ray structure determination were obtained as colorless prisms by recrystallization from dichloromethane/hexane (1:1, Crystal data for 8a: C24H32Si2S4, M, 504.93, triclinic, space group P1, 2, a, 10.505(2, b, 14.898(2, c, 10.077(2) Å, α, 102.35(1, β, 116.88(1, γ, 69.65(1)°, V, 1315.9(5) Å3, Z, 2, ρCalcd, 1.274 g cm-3, F(000, 536.00, 2θmax, 55.0°, MoKα (λ, 0.71069 Å, μ(MoKα, 4.62 cm-1, T, 296 K; Of the 6363 reflections which were collected, 6032 were unique Rint, 0.012, The structure was solved by heavy-atom Patterson methods and expanded using Fourier techniques. The non-hydrogen atoms were refined anisotropically. Hydrogen atoms were included but not refined. The final cycle of full-matrix least-squares refinement was based on 4272 observed reflec
    • -1, T = 296 K; Of the 6363 reflections which were collected, 6032 were unique (Rint = 0.012). The structure was solved by heavy-atom Patterson methods and expanded using Fourier techniques. The non-hydrogen atoms were refined anisotropically. Hydrogen atoms were included but not refined. The final cycle of full-matrix least-squares refinement was based on 4272 observed reflections {I > 3.00s(I)} and 271 variable parameters and converged with unweighted and weighted agreement factors of R = 0.038 and Rw = 0.034. All calculations were performed using the teXsan crystallographic software package of Molecular Structure Corporation. Crystallographic data have been deposited with Cambridge Crystallographic Data Centre as supplementary publication no. CCDC-100558.
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