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Crystal and molecular structures of N‐alkyl‐N, N‐dimethyl‐3‐(heptamethyltrisiloxan‐3‐yl) propylammonium bromides
Author(s) -
Ramm M.,
Schulz B.,
Sonnek G.,
Schmaucks G.
Publication year - 1990
Publication title -
crystal research and technology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.377
H-Index - 64
eISSN - 1521-4079
pISSN - 0232-1300
DOI - 10.1002/crat.2170250706
Subject(s) - monoclinic crystal system , crystal structure , chemistry , crystallography , alkyl , x ray crystallography , crystal (programming language) , molecule , stereochemistry , diffraction , physics , organic chemistry , programming language , computer science , optics
C 16 H 42 NO 2 Si 3 Br: M r = 444.76, monoclinic space group P 2 1 /c, a = 23.300(8), b = 8.918(4), c = 13.403(2) Å, β = 101.69(4)°, V = 2727(1) Å 3 , D x = 1.08 Mgm −3 , D exp = 1.06 Mgm −3 , Z = 4, F (000) = 932, λ(MoKα) = 0.71069 Å, μ = 16.3 cm −1 . The crystal structure was determined by direct methods and refined by least‐squares procedure to the discrepancy factor R = 0.117. C 15 H 40 NO 2 Si 3 Br: M r = 430.34, monoclinic space group P2 1 /c, a = 23.460(4), b = 8.518(2), c = 13.403(2) Å, β = 102.03(2)°, V = 2619(1) Å 3 , D x = 1.09 Mgm −3 , D exp = 1.07 Mg −3 , Z = 4, F (000) = 920, λ(MoKα) = 0.71069 Å, μ = 33.9 cm −1 . The crystal structure was determined by least‐squares refinement of the structure model derived from structure determination of C 16 H 42 NO 2 ·Si 3 Br to the discrepancy factor R = 0.099. C 16 H 42 NO 2 Si 3 Br: Daten siehe oben. C 15 H 40 NO 2 Si 3 Br: Daten siehe oben.