ISSN:
1434-4475
Schlagwort(e):
Sulfamide
;
Crystal structure
;
Anisotropic extinction
Quelle:
Springer Online Journal Archives 1860-2000
Thema:
Chemie und Pharmazie
Notizen:
Abstract X-ray crystal structure analyses of sulfamide were carried out at 293 K and at 100 K:M=96.10, orthorhombic, Fdd2,Z=8,F(000)=400, Mo Kα, λ=0.71069 Å (graphite monochromator). A) 293 K:a=9.127 (1) Å,b=16.857 (5) Å,c=4.579 (1) Å,V=704.50 Å3,d x =1.812 Mgm−3, μ=0.648 mm−1,R=1.77%,R w =1.94% (384 reflections, 33 parameters). B) 100K:a=9.059 (1) Å,b=16.780 (8) Å,c=4.517 (1) Å,V=686.63 Å3,d x =1.859 Mgm−3, μ=0.665 mm−1,R=1.78%,R w =1.95% (404 reflections, 33 parameters). The sulfamide molecule shows at 293 K S-O and S-N distances of 1.429 (1) Å and 1.620 (1) Å, respectively, which are in agreement with IR data. Hydrogen positions could be determined from differenceFourier syntheses. Strong weakening of some intense low order reflections by extinction was observed, their anisotropy depends on the crystal and on temperature.
Materialart:
Digitale Medien
URL:
http://dx.doi.org/10.1007/BF00809925
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