Abstract
The title compound (disodium dipotassium copper(II) tris-[molybdate (VI)]) is prepared by form melt and characterized by single crystal X-ray diffraction and UV-vis spectroscopy. It crystallizes in the triclinic space group P-1 with a = 7.4946(8) Å, b = 9.3428(9) Å, c = 9.3619(9) Å, α = 92.591(7)°, β = 105.247(9)°, γ = 105.496(9)°, V = 604.7 Å3, and Z = 2. Its structure is isotypic with that of Na4Mn(MoO4)3. It is formed by Cu2O10 distorted bi-octahedral dimers linked by two bridging bidentate Mo2O4 tetrahedra and, additionally, two monodentate Mo1O4 tetrahedra to form Cu2Mo4O20 units. These units are linked by the insertion of Mo3O4 tetrahedra to build infinite ribbons disposed along the c axis. All of these ribbons form a one-dimensional framework. Both K1 and K3 cations are located in the inversion center, and all the other atoms are at general positions. The structure model is supported by the bond valence sum (BVS) and charge distribution CHARDI methods. The Cu2+ cations adopt the [4+2] CuO6 Jahn-Teller distortion giving rise to an intense d–d transition in the UV-vis absorption spectra.
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Original Russian Text © 2018 W. Dridi, M. F. Zid.
The text was submitted by the authors in English. Zhurnal Strukturnoi Khimii, Vol. 59, No. 5, pp. 1168–1172, June-July, 2018.
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Dridi, W., Zid, M.F. Crystal Structure of New One-Dimensional Triple Molybdate Na2K2Cu(MoO4)3. J Struct Chem 59, 1128–1132 (2018). https://doi.org/10.1134/S0022476618050153
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DOI: https://doi.org/10.1134/S0022476618050153