The degree of σ-bond delocalization in polysilanes and its influence on reactivity by through-bond interactions the PES scaled Sandorfy C approach

Herman, Aleksander; Dreczewski, B.; Wojnowski, W.

doi:10.1016/0301-0104(85)87104-4

Cited by 39 publications

(15 citation statements)

References 34 publications

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“…This fact explains the shift of the peak in the absorption spectra of films in comparison with the spectra of polymer solutions where changes of length Si-Si bond are not possible. (2) thin film [5].…”

Section: Resultsmentioning

confidence: 99%

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Structure of poly(di-n-hexylsilane) in nanoporous materials

et al. 2010

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Section: Resultsmentioning

confidence: 99%

“…It has been widely investigated in the last decades experimentally and theoretically [4][5][6]. It is known that at room temperature PDHS is highly crystalline with a trans-planar configuration of segments of a chain (the planar zigzag conformation) and absorbs in 370-380 nm.…”

Section: Introductionmentioning

confidence: 99%

Structure of poly(di-n-hexylsilane) in nanoporous materials

et al. 2010

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“…For details of Wurtz-type reactions for formation of siliconsilicon bonds, see: Burkhard (1949); Gilman & Tomasi (1963); Stolberg (1963); Laguerre et al (1978); Herman et al (1985); Watanabe et al (1988). For related structures of oligosilanes with anti conformations, see: Baumeister et al (1997); Michl & West (2000); Tsuji et al (2004);Fukazawa et al (2006); Haga et al (2008).…”

Section: Related Literaturementioning

confidence: 99%

1,1,4,4-Tetra-tert-butyl-1,4-dichloro-2,2,3,3-tetraphenyltetrasilane

Otsuka¹,

Ishida²,

Kyushin³

2012

Acta Cryst E

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The title compound, C40H56Cl2Si4, was synthesized by the coupling of 1,1-di-tert-butyl-1,2-dichloro-2,2-diphenyldisilane with lithium. The asymmetric unit contains one half-molecule, which is completed by an inversion centre. In the molecule, the tetrasilane skeleton adopts a perfect anti conformation and the Si—Si bonds [2.4355 (5) and 2.4328 (7) Å] are longer than the standard Si—Si bond length (2.34 Å). The Si—Si—Si angle [116.09 (2)°] is larger than the tetrahedral bond angle (109.5°). These long bond lengths and the wide angle are favorable for reducing the steric hindrance among the tert-butyl and the phenyl groups. The dihedral angle between the phenyl rings in the asymmetric unit is 37.36 (8)°.

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“…photoconductivity, piezochromism and thermochromism [80]. Due to the conformation dependent a-electron delocalization [81], the catenated Si-chain serves as a one-dimensional semi-and photoconductor and also as chromophore.…”

Section: Fibrillar Structurementioning

confidence: 99%