## Beitrag zur quantitativen Bestimmung von Schwetel in organisohen Verbindungen Die Schwefelbestimmung in organischen Substanzen wird heute in der Regel durch Verbrennung in der Sauerstoffatmosphare nach Schiiniger [l], [2] durchgefuhrt, wobei das gebildete Sulfat entweder mit einem Farbindikator
Bis(triphenylsilyl)selenide
✍ Scribed by Medina, Iliana ;Mague, Joel T. ;Donahue, James P. ;Fink, Mark J.
- Book ID
- 104484809
- Publisher
- International Union of Crystallography
- Year
- 2005
- Tongue
- English
- Weight
- 139 KB
- Volume
- 61
- Category
- Article
- ISSN
- 1600-5368
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✦ Synopsis
Bis(triphenylsilyl)selenide, [(C 6 H 5 ) 3 Si] 2 Se or C 36 H 30 SeSi 2 , exists in the solid state as monomeric angular molecules. Si-Se-Si angles of 111.56 (3) and 109.45 (3) are found in the two independent molecules.
📜 SIMILAR VOLUMES
In the structure of the title monomeric phosphorosilicate, C 42 H 35 O 3 PSi 2 or PhP( O)(OSiPh 3 ) 2 , there are notable differences in the chemically equivalent P V -O-Si angles [141.59 (16) and 152.38 (18) ] and the two P-O(-Si) distances [1.546 (3) and 1.566 (3) A ˚]. There is also a significant
## Abstract Bis(triphenylsilyl) chromate is an active catalyst for ethylene polymerization without further treatment or additives. Catalytic activity is markedly increased when the compound is deposited on silica–alumina and is further increased if it is deposited on silica and then treated with an