Poly[[[diaqua­zinc(II)]-bis(μ2-3-cyano-4-dicyano­methyl­ene-5-oxo-4,5-dihydro-1H-pyrrol-2-olato-κ2N3:N3′)] dihydrate]

Tafeenko, V.A.; Chernyshev, V.V.

doi:10.1107/S0108270105013399

Acta Crystallographica Section C
Acta Crystallographica
Section C STRUCTURAL CHEMISTRY

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Figure 3
Part of the chain, showing how the building blocks [each consisting of a Zn^II cation, two water molecules and two anions, e.g. with symmetry codes (x, y, z) and (ii)] interplay through the complementary hydrogen-bonding and π–π interactions. The hydrogen-bond parameters are listed in Table 2

. The shortest distance between anions from adjacent blocks in the chain is N1⋯C8ⁱ = 3.265 Å. Adjacent chains are linked by a coordination bond from N3 to Zn, thus forming a layer. [Symmetry codes: (i) $[{1\over 2}]$ − x, $[{1\over 2}]$ − y, −z; (ii) $[{1\over 2}]$ − x, $[{3\over 2}]$ − y, −z; (iii) x, 1 + y, z; (iv) $[{1\over 2}]$ − x, − $[{1\over 2}]$ + y, $[{1\over 2}]$ + z; (v) $[{1\over 2}]$ − x, $[{1\over 2}]$ + y, $[{1\over 2}]$ + z; (vi) $[{1\over 2}]$ − x, $[{1\over 2}]$ + y, − $[{1\over 2}]$ + z; (vii) $[{1\over 2}]$ − x, − $[{1\over 2}]$ + y, − $[{1\over 2}]$ − z; (viii) x, −1 + y, z.]

STRUCTURAL
CHEMISTRY

ISSN: 2053-2296

Volume 61| Part 6| May 2005| Pages m298-m300

doi:10.1107/S0108270105013399

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