化学
八面体
结晶学
单斜晶系
晶体结构
铜
氢键
群(周期表)
分子
有机化学
作者
W. Nowacki,R. Scheidegger
标识
DOI:10.1002/hlca.19520350147
摘要
Abstract 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 CuCu = 3,03 resp. 3,17 Å. Each Cu I is surrounded by 2 OH I , 2 OH II and 2 O I (of NO 3 ‐groups) at the distances 2,00, 2,08 and 2,35 Å (deformed octahedron); each Cu II in an analogous way by 4 OH II , 1 O I and 1 OH I at 2,05, 2,18 and 2,27 Å. The structure shows layers of octahedra (of the C 6‐type) CuX 6/3 = CuX 2 (X = OH I , OH II ,O I ). The distance OH II O II is 2,46–2,60 Å and is interpreted as a hydrogen bond OH II ⃛ O II . The layers of octahedra are linked together by these H‐bonds via the NO 3 ‐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.
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