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Structural investigations of two 2‐amino‐5‐nitropyridinium Salts: C 5 H 6 N 3 O 2 + NO 3 − and (C 5 H 6 N 3 O 2 + ) 2 CuCl 4 2−
Author(s) -
BagieuBeucher M.,
Masse R.,
Qui D. Tran
Publication year - 1991
Publication title -
zeitschrift für anorganische und allgemeine chemie
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.354
H-Index - 66
eISSN - 1521-3749
pISSN - 0044-2313
DOI - 10.1002/zaac.19916060106
Subject(s) - monoclinic crystal system , crystal structure , crystallography , crystal (programming language) , ion , chemistry , salt (chemistry) , tetrahedron , stereochemistry , organic chemistry , computer science , programming language
Through chemical preparations and crystal structures of the 2‐amino‐5‐nitropyridinium nitrate and the bis(2‐amino‐5‐nitropyridinium)tetrachlorocuprate, an attempt at polar crystal engineering using the 2‐amino‐5‐nitropyridinium cation and inorganic counter anions is illustrated. The role of the ratio of anion charge to dimension in the building of centric packings is illustrated and discussed. In the tetrachlorocuprate salt, distorted CuCl 4 2−tetrahedral anions of D 2d symmetry are present. C 5 H 6 N 3 O 2 + NO 3 −is monoclinic, P2 1 /n, with a = 13.672(3), b = 7.762(1), c = 7.577(1) Å, β = 101.45(5)°, Z = 4, d x = 1.703. The crystal structure has been solved using 1 386 independent reflections with a final R value of 0.044. (C 5 H 6 N 3 O 2 + ) 2 CuCl 4 2−is monoclinic, P2 1 /c, with a = 7.701(3), b = 31.99(5), c = 7.107(3) Å, β = 92.65(5)°, Z = 4, d x = 1.844. The crystal structure has been solved using 3 367 independent reflections with a reliability factor of 0.039.