Abstract
A new CsNO3 polymorph with space group P21/c, Z = 4, a = 4.5699(9) A, b = 11.1871(10) A, c = 9.1484(18) A, β = 131.24(3)° has been prepared by crystallization from a mixture of water and DMSO. Flat triangles NO3 are located in the (010) and (020) planes between the layers formed by coordination polyhedra of Cs atoms in the (040) plane. In contrast to the previously known low-temperature polymorph, the new modification is characterized by the crystal equivalence of all Cs and NO3 groups.
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