- Synthesis and structural characterization of neutral hexacoordinate silicon(IV) complexes containing salophen and thiocyanato-N ligands
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The reaction of the H2salophen ligand, 2,2′-((1E,1′E)-(1,2-phenylenebis(azanylylidene))bis (methanylylidene))diphenol, with one molar equivalent of Si(NCS)4, MeSi(NCS)3 (13), or HMeSi(NCS)2 afforded neutral hexacoordinate silicon complexes, which have an-NCS bi-functionality (complex 1) and mono-functionality (complex 14). The reaction of Si(NCS)4 with the H2salophen-type ligand1,1′-((1E,1′E)-(1,2-phenylenebis(azanylylidene))bis(methanylylidene)) bis(naphthalen-2-ol) (H2Noph), afforded the hexacoordinate silicon complex 15, which has an-NCS bi-functionality. Single-crystal X-ray structural and elemental analyses were used to characterize and confirm the structure of the starting material 13 and complexes 1, 14, and 15. The complexes were characterized in solution by 1H, 13C, and silicon-29 nuclear magnetic resonance (29Si NMR) and in the solid state by 29Si cross-polarization/magic angle spinning (CP/MAS) NMR. Because of the poor solubility of complex 1, it was only possible to characterize it in the solid state by 13C and 29Si CP/MAS NMR and in solution by 1H NMR.
- González-García, Gerardo,Pérez, Astrid,López, Jorge A.,Puello-Polo, Esneyder,González-García, Andrés
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- ULTRAVIOLET SPECTROSCOPIC INVESTIGATION OF ISOCYANATO- AND ISOTHIOCYANATO SILANES CONTAINING PHENYL- AND METHYL GROUPS
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The members of the series R(n)Si(NCO)(4-n) and R(n)Si(NCS)(4-n), where R = -CH3 and -C6H5, were prepared, their ultraviolet spectra recorded and the observed bands assigned.The spectra were compared to those of halogeno derivatives.The similarity of halogen- and pseudohalogeno-groups and difference between the effect of methyl- and phenyl-groups were studied.
- Veszpremi, Tamas,Barta, Istvan,Nagy, Jozsef
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p. 243 - 250
(2007/10/02)
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