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) + x, − y, 1 − z; (iii) − + x, − y, 1 − z; (iv) − x, + y, z; (v) − x, + y, z; (vi) 1 − x, + y, 1.5 − z.] |