Dibasic 3,3′-di­nitro-4,4′-bipyrazole-1,1′-diides of K, Rb and Cs reveal metal-selective ring–π over ring–N coordination

Domasevitch, K.V.; Ponomarova, V.V.

doi:10.1107/S2056989026005037

Acta Crystallographica Section E
Acta Crystallographica
Section E CRYSTALLOGRAPHIC COMMUNICATIONS

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Figure 4
(a) Coordination layers in 1 viewed in the projection on the ac plane, with the grey box indicating primary K-pyrazolate chains, which are orthogonal to the drawing plane. (b) Side-view of the latter showing bridging function of pyrazolates and (c) bridging function of NO₂ groups, with the particularly long K1⋯O2^v contacts. Red dotted lines indicate weak stacking interactions. [Symmetry codes: (i) −x + $[{1\over 2}]$ , y, z − $[{1\over 2}]$ ; (ii) x, y − 1, z; (iii) x + $[{1\over 2}]$ , −y − 1, z; (iv) x + $[{1\over 2}]$ , −y, z; (v) −x + $[{1\over 2}]$ , y − 1, z − $[{1\over 2}]$ ; (vi) −x + $[{1\over 2}]$ , y + 1, z + $[{1\over 2}]$ ; (viii) x, y + 1, z; (ix) −x + $[{1\over 2}]$ , y, z + $[{1\over 2}]$ .]

CRYSTALLOGRAPHIC
COMMUNICATIONS

ISSN: 2056-9890

Volume 82| Part 6| June 2026| Pages 683-691

https://doi.org/10.1107/S2056989026005037

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