Bis(2-amino-6-methylpyridinium) tetrabromidocuprate(II)
نویسندگان
چکیده
In the crystal structure of the title compound, (C(6)H(9)N(2))(2)[CuBr(4)], the geometry around the Cu atom is inter-mediate between tetra-hedral (T(d)) and square planar (D(4h)). Each [CuBr(4)](2-) anion is connected non-symmetrically to four surrounding cations through N-H⋯X (pyridine and amine proton) hydrogen bonds, forming chains of the ladder-type running parallel to the crystallographic b axis. These layers are further connected by means of offset face-to-face inter-actions (parallel to the a axis), giving a three-dimensional network. Cation π-π stacking [centroid separations of 3.69 (9) and 3.71 (1) Å] and Br⋯aryl inter-actions [3.72 (2) and 4.04 (6) Å] are present in the crystal structure. There are no inter-molecular Br⋯Br inter-actions.
منابع مشابه
Bis(1-amino-4-methylpyridinium) bis(1,2-dicyanoethene-1,2-dithiolato-κ2 S,S′)nickelate(II)
The asymmetric unit of the title compound, (C(6)H(9)N(2))(2)[Ni(C(4)N(2)S(2))(2)], contains one half of an [Ni(mnt)(2)](2-) anion (mnt is maleonitrile-dithiol-ate or 1,2-dicyano-ethene-1,2-dithiol-ate) and one 1-amino-4-methyl-pyridinium cation. The Ni(II) atom is located on an inversion centre. In the crystal structure, inter-molecular N-H⋯N hydrogen bonds link the mol-ecules.
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The asymmetric unit of the title compound, (C(6)H(9)N(2))(2)[Cu(C(7)H(3)NO(4))(2)], contains half of a [Cu(pydc)(2)](2-) (pydcH(2) is pyridine-2,6-dicarb-oxy-lic acid) anion and one protonated 2-amino-4-methyl-pyridine (2a4mpH)(+) counter-ion. The anion is a six-coordinated complex with a distorted CuN(2)O(4) octa-hedral geometry around the Cu(II) ion. N-H⋯O and C-H⋯O hydrogen bonds along with ...
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عنوان ژورنال:
دوره 64 شماره
صفحات -
تاریخ انتشار 2008