Figure 1
A connected set of numbered atoms, showing displacement ellipsoids at the 70% probability level. M is In or Nb. [Symmetry codes: (i) 1 − y, x, + z; (ii) −x, 1 − y, − z; (iii) −1 + y, 1 − x, − + z; (iv) −x, 1 − y, + z; (v) −1 + y, 1 − x, − z.] |