Abstract: | Li2CrO4 · 2H2O: Unusual Hydrogen Bridge Bonding and Coordination for Oxygen of the Anions CrO42? The crystal structure of Li2CrO4 · 2H2O was solved including the positions of hydrogen by X-ray methods. Li2CrO4 · 2H2O: P212121, Z = 4, a = 5.503(1) Å, b = 7.733(2) Å, c = 11.987(2) Å, Z(Fo) with (Fo)2 ? 3σ(Fo)2 = 2284, Z (parameter) = 99, R/Rw = 0.025/0.029 LiCrO4 · 2H2O contains a locally bordered hydrogen bridge bonding system between water molecules as donors and two O of CrO42? as acceptors. This system connects anions in the direction 010]. It is noticeable that oxygen ligands of the anion CrO42? have strongly differing coordination. |