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Figure 1
First and second coordination shell of Mo6+/W6+ in the title compounds, revealing differences in the environment of each apical O2− that are responsible for the variations in Mo–O and W–O bond lengths. Anisotropic displacement ellipsoids are drawn at the 50% probability level. [Symmetry codes: (i) 1 − x, 1 − y, 1 − z; (ii) [{1\over 2}] + x, [{3\over 2}] − y, 1 − z; (iii) −[{1\over 2}] + x, [{3\over 2}] − y, 1 − z; (iv) [{1\over 2}] − x, [{1\over 2}] + y, z; (v) [{3\over 2}] − x, [{1\over 2}] + y, z; (vi) 1 − x, [{1\over 2}] + y, 1.5 − z.]

Journal logoCRYSTALLOGRAPHIC
COMMUNICATIONS
ISSN: 2056-9890
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