Coordination chemistry of polynitriles, part xi. influence of 4,4′-bipyridine and solvent on the crystal and molecular structures of alkaline earth pentacyanocyclopentadienides

SUMMARY

While indeed this molecule formed numerous linear bridges between pairs of metals, it was soon found out, that also monodentate coordination was possible, quite often combined with additional involvement of hydrogen_bonding and π-π interactions. -bipyridine H hydrogen_bonds from the water bipyridine ligandand (H13, and 4,4 H16, respectively). Due all the cyano groups are involved in hydrogen_bonds. Water oxygen O1 (and its inversion related counterpart as well) donates hydrogen_bonds to the oxygen atom O3 of a lattice butanol molecule and cyano nitrogen N104 of the PCC anion, while water oxygen O2 donates two hydrogen_bonds to cyano nitrogens N101 . . .

 



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