4,4′-Dimethyl-1,1′-(p-phenylenedimethylene)dipyridinium bis[7,7,8,8-tetracyanoquinodimethanide(1−)]
نویسنده
چکیده
In the title salt, C(20)H(22)N(2) (2+)·2C(12)H(4)N(4) (-), the cations and anions stack along the b axis into segregated columns. In the cation, which has a crystallographically imposed centre of symmetry, the dihedral angle between the benzene and pyridine rings is 89.14 (4)°. Centrosymmetrically related anions form dimers by π-π stacking inter-actions, with centroid-centroid separations of 3.874 (4) Å. The crystal packing is stabilized by inter-columnar C-H⋯N hydrogen bonds.
منابع مشابه
catena-Poly[1,1′-dimethyl-4,4′-(ethane-1,2-diyl)dipyridinium [lead(II)-tri-μ-iodido-lead(II)-tri-μ-iodido]]
The title compound, {(C(14)H(18)N(2))[Pb(2)I(6)]}(n), consists of discrete 1,1'-dimethyl-4,4'-(ethane-1,2-di-yl)dipyridinium cations and one-dimensional [Pb(2)I(6)](n) anions. The organic cation has an inversion center at the mid-point of the ethane C-C bond. In the anion, the Pb(II) atom is coordinated by six I atoms in a distorted octa-hedral geometry. The I atoms bridge the Pb(II) atoms into...
متن کامل1,1′-(p-Phenylenedimethylene)dipyridinium bis(hexafluoridophosphate)
The title salt, C(18)H(18)N(2) (2+)·2PF(6) (-), exists as non-inter-acting cations and anions. In the cation, the pyridine and phenyl-ene rings are aligned at 62.9 (1)°; the pyridine ring lies on a special position of m site symmetry and the phenyl-ene ring on a special position of 2/m site symmetry. The angle at the methyl-ene C atom is 112.8 (1)°. The anion lies on a special position of m sit...
متن کامل1,1′-Dimethyl-4,4′-bipyridinium bis(triiodide)
In the title compound, C(12)H(14)N(2) (2+)·2I(3) (-), the 1,1'-dimethyl-4,4'-bipyridinium (DMBP) dication is charge balanced by two triiodide ions. The DMBP dication is planar within 0.010 (5) Å. The asymmetric unit contains only half of the dication, the other half being generated by an inversion center. Weak C-H⋯I inter-actions link the ions into sheets parallel to (121).
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In the title compound, [N(C(4)H(9))(4)][V(C(23)H(21)NS(3)Si)(2)]·4CH(3)CN, the V(III) atom (site symmetry ) is coordinated by two N,S,S'-tridentate 4,4'-dimethyl-2,2'-(3,7-dimethyl-1H-4,2,1-benzothiaza-siline-1,1-di-yl)dibenzene-thiol-ate ligands in a distorted trans-VN(2)S(4) octa-hedral geometry. The complete cation is generated by crystallographic twofold symmetry, with the V atom lying on t...
متن کامل1,1′-Dimethyl-4,4′-(propane-1,3-diyl)dipyridinium tetrabromidocadmate(II)
In the cation of the title compound, (C(15)H(20)N(2))[CdBr(4)], the dihedral angle between the two pyridine rings is 70.85 (5)°. An inter-molecular π-π inter-action between the pyridine rings [centroid-centroid distance = 3.900 (4) Å] is observed. The Cd(II) atom has a distorted tetra-hedral coordination.
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عنوان ژورنال:
دوره 66 شماره
صفحات -
تاریخ انتشار 2010