Abstract
A new compound, CdPb2O2Cl2, is synthesized by the method of solid-phase reactions. The compound has monoclinic symmetry, space group C2/m, a = 12.392(8) Å, b = 3.8040(14) Å, c = 7.658(5) Å, β = 122.64(5)°, and V = 304.0(3) Å3. The structure contains one symmetrically independent position of the Pb2+ cation coordinated by three O2− anions (Pb2+-O2− = 2.29–2.34 Å) and five Cl− anions (Pb2+-Cl− = 3.35–3.57 Å). The Cd2+ cation has a symmetric coordination with the formation of two bonds Cd-O = 2.15 Å and four bonds Cd-Cl = 2.73 Å. The oxygen atom is tetrahedrally coordinated by three Pb2+ cations and one Cd2+ cation, which leads to the formation of oxo-centered heterometallic OPb3Cd tetrahedra. The tetrahedra are linked together into chains through common Pb atoms and into layered complexes due to sharing of the equatorial Cd atoms. The chlorine atoms are located above the cavities of the oxo-centered layer.
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Original Russian Text © O.I. Siidra, S.V. Krivovichev, C. Teske, W. Depmeier, 2009, published in Fizika i Khimiya Stekla.
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Siidra, O.I., Krivovichev, S.V., Teske, C. et al. Synthesis and crystal structure of a new oxohalide CdPb2O2Cl2 . Glass Phys Chem 35, 411–415 (2009). https://doi.org/10.1134/S1087659609040105
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DOI: https://doi.org/10.1134/S1087659609040105