ISSN:
0018-019X
Schlagwort(e):
Chemistry
;
Organic Chemistry
Quelle:
Wiley InterScience Backfile Collection 1832-2000
Thema:
Chemie und Pharmazie
Notizen:
The complete crystal structure of monoclinic basic copper nitrate was determined by means of Patterson-, trial and error- and Fourier-methods. The lattice constants, space group and atomic coordinates are tabulated on p. 383. The Cu atoms form a pseudohexagonal net (001) with Cu—Cu = 3,03 resp. 3,17 Å. Each CuI is surrounded by 2 OHI, 2 OHII and 2 OI (of NO3-groups) at the distances 2,00, 2,08 and 2,35 Å (deformed octahedron); each CuII in an analogous way by 4 OHII, 1 OI and 1 OHI at 2,05, 2,18 and 2,27 Å. The structure shows layers of octahedra (of the C6-type) CuX6/3 = CuX2 (X = OHI, OHII,OI). The distance OHII—OII is 2,46-2,60 Å and is interpreted as a hydrogen bond O—HII ⃛ OII. The layers of octahedra are linked together by these H-bonds via the NO3-groups, which are nearly normal to the layer planes. Contrary to many layer structures this compound is optically positive, apparently a result of the position of the nitrate groups. The crystal structure is isotypical with the basic copper bromide.
Zusätzliches Material:
7 Ill.
Materialart:
Digitale Medien
URL:
http://dx.doi.org/10.1002/hlca.19520350147
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