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Microwave‐assisted Synthesis, Crystal Structures, and Thermal Stability of C 11 H 10 N 2 Cu 2 Br 3 and C 22 H 20 N 4 Cu 8 I 10
Author(s) -
Deng Min,
Wu Yuandong,
Rao Pinhua,
Zhang Wenqi,
Wang Runkai,
Doert Thomas
Publication year - 2018
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.201800324
Subject(s) - monoclinic crystal system , thermogravimetric analysis , crystallography , crystal structure , thermal stability , x ray crystallography , chemistry , single crystal , materials science , diffraction , physics , organic chemistry , optics
Complexes of C 11 H 10 N 2 Cu 2 Br 3 ( 1 ) and C 22 H 20 N 4 Cu 8 I 10 ( 2 ) [C 22 H 20 N 4 = 1,1"‐(1,2‐ethanediyl)‐bis‐4,4′‐bipyridinium] were synthesized via the microwave‐assisted solvo‐thermal reactions of C 22 H 20 N 4 Br 2 , CuSO 4 · 5H 2 O, and NaX (X = Br, I) and characterized by XRD, FTIR, and thermogravimetric analysis. The crystal structures were determined by single‐crystal X‐ray diffraction analyses. C 11 H 10 N 2 Cu 2 Br 3 crystallized in the monoclinic space group C 2/ c (no. 15) with lattice parameters a = 24.658(3) Å, b = 6.71(9) Å, c = 17.368(9) Å, β = 98.274(1)°, V = 2847.7(1) Å 3 , whereas C 22 H 20 N 4 Cu 8 I 10 crystallized in the monoclinic space group P 2 1 / n (no. 14) with lattice parameters a = 7.392(2) Å, b = 20.809(7) Å, c = 25.412(7) Å, β = 92.06(8) °, V = 3906.6(8) Å 3 . Complex 1 showed a 2D layered structure composed of [Cu 4 Br 6 ] – chains connected via 1,1"‐(1,2‐ethanediyl)‐bis‐4,4′‐bipyridinium ligands. Complex 2 possessed a 3D framework, in which puckered [Cu 8 I 10 ] 2– layers were linked by organic ligands. The thermogravimetric analysis indicated that both two complexes were stable up to 230 °C and 170 °C, respectively.