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Unprecedented stacking of MV2+ dications and MV˙+ radical cations in the mixed-valence viologen salt (MV)2(BF4)3 (MV = methylviologen)

2013; Royal Society of Chemistry; Volume: 49; Issue: 87 Linguagem: Inglês

10.1039/c3cc45690k

1364-548X

Nicolas Leblanc, Nicolas Mercier, Oksana Toma, Abdel Hadi Kassiba, Leokadiya V. Zorina, Pascale Auban‐Senzier, Claude Pasquier,

Porphyrin and Phthalocyanine Chemistry

Using a slow liquid–gas diffusion method, the mixed-valence viologen salt (MV)2(BF4)3 (1) and the radical cation salt (MV)(BF4) (2) are crystallized. Both structures contain regular stacks of MV˙+ radical cations (2) or alternating MV˙+ and MV2+ entities (1). A short intrastack intermolecular separation (3.23 Å) unprecedently reveals strong interactions between MV2+ and MV˙+ in 1.