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6676 J. Am. Chem. Soc. 1984, 106, 6676-6682 Registry No. la, 58356-65-3; Ib, 32195-55-4; LiOC1, 13840-33-0;
 

Summary: 6676 J. Am. Chem. Soc. 1984, 106, 6676-6682
Registry No. la, 58356-65-3; Ib, 32195-55-4; LiOC1, 13840-33-0;
styrene, 100-42-5;4-cyanopyridine, 100-48-1;4-methylpyridine, 108-
89-4;2,6-dimethylpyridine,108-48-5;2,6-di-tert-butylpyridine,585-48-8;
3,5-dimethylpyridine,591-22-0;cis-stilbene,645-49-8;a-methylstyrene,
98-83-9;cyclohexene,110-83-8;1-methylcyclohexene,591-49-1;cyclo-
octene, 931-88-4; 2-methyl-2-heptene, 627-97-4; 2-methyl-l-heptene,
15870-10-7; 1-octene, 111-66-0; pyridine, 110-86-1; benzyldimethyl-
tetradecylammonium chloride, 139-08-2;p-methoxystyrene, 637-69-4;
sodium hypochlorite, 7681-52-9; norbornene, 498-66-8; 3-carene,
13466-78-9.
Substituent Effects on the Carbon-Silicon Double Bond.
Monosubstituted Silenes
Yitzhak Apeloig* and Miriam Karni
Contributionfrom the Department of Chemistry, Technion-Israel Institute of Technology,
Haija 32000, Israel. Received May 12, 1983
Abstract: A series of isomeric silenes H2C=SiHR (1) and H2Si=CHR (2) where R = CH3,SiH3,F, OH, OSiH3,CN, and
NO2 were studied at the RHF/3-21G and 6-31G* levels. The two basis sets give in general similar results. The calculated
r(C=Si) are (3-21G, values (in A) for 1followedby 2) 1.717 (R = H), 1.716, 1.725 (CH,), 1.724, 1.721(SiH,), 1.698, 1.730
(F), 1.705, 1.746 (OH), 1.705, 1.749 (OSiH3), 1.711, 1.727 (CN), 1.707,and 1.726 (NO,). The experimental r(C=Si) of

  

Source: Apeloig, Yitzhak - Department of Chemistry, Technion, Israel Institute of Technology

 

Collections: Chemistry