scholarly journals Preliminary crystal structure determination of the alkaline protease from the Antarctic psychrophile pseudomonas aeruginosa

2008 ◽  
Vol 6 (11) ◽  
pp. 2462-2464 ◽  
Author(s):  
Vincent Villeret ◽  
Jozef Van Beeumen ◽  
Jean-Pierre Chessa ◽  
Charles Gerday
Keyword(s):  
Crystal Structure ◽  
Pseudomonas Aeruginosa ◽  
Structure Determination ◽  
Alkaline Protease ◽  
Crystal Structure Determination ◽  
The Antarctic

Vom Fluorsilan zum Siloxan — 1,3-Silylgruppenwanderung am Si3CSiO-Gerüst/ From a Fluorosilane to a Siloxane — 1,3-Migration of Silyl Groups in the Si3CSiO System

1985 ◽  
Vol 40 (8) ◽  
pp. 1023-1028 ◽  
Author(s):  
Uwe Klingebiel ◽  
Sabine Pohlmann ◽  
Lutz Skoda ◽  
Cornelia Lensch ◽  
George M. Sheldrick
Keyword(s):  
Crystal Structure ◽  
Structure Determination ◽  
Crystal Structure Determination ◽  
Silyl Groups ◽  
Trimethylsilyl Groups

AbstractThe nature of the products which are formed in the reaction of tris(trimethylsilyl)Methylfluorosilanes (Me3Si)3C -SiF2R with KOH depends on the bulkiness of the substituents R. The condensed siloxane is obtained for R = F . The crystal structure determination of this siloxane (Me3Si)3C -SiF2-O -SiF2-C (SiMe3)3 shows that the Si -O - Si unit is linear. A fluorosilanol as well as a siloxane could be isolated for R = Me. 1,3-Migration of one or two trimethylsilyl groups from the carbon to the oxygen takes place for R = phenyl, rm-butyl or silylamine, with formation of siloxanes which are isomeres o f the expected silanols.

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