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Si-S single bond

Although the Si—S bond (2.013 A) in 74 is shorter than a typical Si—S single bond (2.13-2.16 suggesting its double-bond character to some extent, it is still 0.07 A... [Pg.1086]

The calculated force constant for the Si=O bond in Me2Si=O is 8.32 X 10 N m . This agrees with similar parameters for X2Si=O (X = Cl, F) being equal to QxlO Nm (Schndckel, 1978, 1980a,b), whereas the force constant of the Si—O single bond is roughly S.SxlO Nm . The calculated order of the Si = O bond is 1.45. [Pg.52]

Lambert and his coworkers have made similar claims earlier, based on insufficient evidence in solution . Lambert s 1993 study, for example, showed an organosilyl moiety with no coordination to the anion, but with a toluene molecule close nearby (R(Si—C) = 2.18 A). Lambert and coworkers claimed that in 2 covalent bonding is weak or absent i.e. there is no fourth coordination between the silicon atom and toluene. The elongated Si—distance in 2 led Lambert and his coworkers to the stable silicenium ion description. The X-ray structure of 3, reported by Reed and coworkers, showed a Si+ -Br distance of 2.48 A, 0.24 A longer than a normal Si—Br single bond . [Pg.522]

Inleralomic distances vary with the type of bond and the nature of the other atoms or groups attached to the bonded atoms. For example, the formally single-bonded C-C distance varies from 146pm in Me-CN to 163.8pm in Bu PhC-CPhBu and 167 pm in 3,5-Bu j-C6H3)2C-C(QH3-3,5-Bu )3 and (CF3>2(4-FCeH4)C-C(C6H4-4-F)(CF3)2. Some typical examples are in Fig. 8.14. Note that because of the breadth of some of these ranges the interatomic distance between quite different pairs of atoms can be identical. For example, the value 133 pm includes C-F, C-O, C-N and C-C likewise the value of 185 pm includes C-Br, C-S, C-Se, C P and C Si. The conventional... [Pg.292]

The Compounds Between Si, Ge and Sn and Chalcogens (S, Se, and Te) Having Both a Single Bond and a Double Bond (Heavy Ketones)... [Pg.195]

The single-bond compounds between Si, Ge, and Sn and chalcogens (S, Se, Te) are reactive and used as synthetic intermediates in the synthesis of organic compounds, organochalcogen compounds, organo-silicon, -germanium and -tin compounds, and transition metal-chalcogen complexes and clusters. [Pg.195]

Titanium dioxide differs from silica mainly in two respects (1) the Ti + ions are octahedrally coordinated in all three modifications of TiOji (2) the Ti—0 bond is more pronouncedly ionic than the Si—O bond. Using Pauling s electronegativity values (297), one calculates a 63% ionic character for the Ti—0 single bond versus 50% for Si—O. In SiOj, there is certainly some double bond character involving 3d orbitals of the Si atom, causing lowered ionic character. Therefore, characteristic differences should be expected regarding the surface chemistry. [Pg.249]


See other pages where Si-S single bond is mentioned: [Pg.123]    [Pg.157]    [Pg.1066]    [Pg.1086]    [Pg.1091]    [Pg.885]    [Pg.885]    [Pg.143]    [Pg.1066]    [Pg.1091]    [Pg.123]    [Pg.157]    [Pg.1066]    [Pg.1086]    [Pg.1091]    [Pg.885]    [Pg.885]    [Pg.143]    [Pg.1066]    [Pg.1091]    [Pg.202]    [Pg.1033]    [Pg.2086]    [Pg.189]    [Pg.440]    [Pg.266]    [Pg.12]    [Pg.137]    [Pg.240]    [Pg.78]    [Pg.375]    [Pg.1033]    [Pg.2086]    [Pg.448]    [Pg.21]    [Pg.360]    [Pg.146]    [Pg.45]    [Pg.195]    [Pg.261]    [Pg.196]    [Pg.202]    [Pg.207]    [Pg.27]    [Pg.66]    [Pg.79]    [Pg.597]    [Pg.191]    [Pg.171]    [Pg.154]    [Pg.285]   
See also in sourсe #XX -- [ Pg.196 ]

See also in sourсe #XX -- [ Pg.196 ]




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Bonding single bonds

Bonds S-bond

S Bond

S-bonding

Si-0 bonds

Si=S bonds

Single bonds

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