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Figure 3
Sections through the four-dimensional Fourier map showing the coordination of cadmium by two symmetry-related cyano C1—N1 groups. The section runs through the plane of Ni(CN)2 in the basic structure; e1,e2,e3 are the Cartesian axis. The t coordinate of the sections is chosen to show the behaviour of the structure during an abrupt change in configuration. (a) The section for t = −0.05 shows the situation just before the jump. The Cd1 atom occupies the tetrahedral position, but the octahedral position Cd2 is already arising. (b) The section for t = 0 shows the situation during the jump. Both possible positions for Cd, C1 and N1 prolonged to the new Ni position. (c) The section for t = 0.05 shows the situation just after the jump. The tetrahedral position of cadmium is vanishing.

Journal logoSTRUCTURAL SCIENCE
CRYSTAL ENGINEERING
MATERIALS
ISSN: 2052-5206
Volume 61| Part 3| June 2005| Pages 280-286
doi:10.1107/S0108768105012632
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