A triclinic polymorph of 4-cyanopyridinium hydrogen chloranilate
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چکیده
THE ASYMMETRIC UNIT OF THE TRICLINIC POLYMORPH OF THE TITLE COMPOUND (SYSTEMATIC NAME: 4-cyano-pyridinium 2,5-dichloro-4-hy-droxy-3,6-dioxocyclo-hexa-1,4-dien-1-olate), C(6)H(5)N(2) (+)·C(6)HCl(2)O(4) (-), consists of two crystallographically independent cation-anion units, in each of which the cation and the anion are linked by an N-H⋯O hydrogen bond. In the units, the dihedral angles between the cation and anion rings are 78.43 (11) and 80.71 (11)°. In the crystal, each unit independently forms a chain through N-H⋯O and O-H⋯N hydrogen bonds; one chain runs along the c axis while the other runs along [011]. Weak C-H⋯O, C-H⋯N and C-H⋯Cl inter-actions are observed between the chains.
منابع مشابه
Crystal Structure of Lutidinium Chloranilates
The crystal structure of four lutidinium chloranilates, (CH3)2C6H3NH + C6HO4Cl2 , was determined by single crystal X-ray diffraction at room temperature. 2,4-lutidinium chloranilate (I): triclinic, P1̄ (#2), Z = 2, a = 11.401(2), b = 11.639(2), c = 5.1588(8) Å, = 91.899(15) , = 90.104(14) , and = 83.355(16) , 2,5-lutidinium chloranilate (II): monoclinic, P21/c (#14), Z = 4, a = 7.709(2), b = 11....
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