{4-Hy-droxy-N'-[(2-oxido-1-naphthyl-κO)methyl-idene]benzohydrazidato-κN',O}dimethyl-tin(IV)

Abstract

Two independent but very similar mol-ecules comprise the asymmetric unit of the title compound, [Sn(CH(3))(2)(C(18)H(12)N(2)O(3))]. Each Sn atom is coordinated by two methyl groups and two O atoms and an N atom from the dinegative tridentate ligand. The resultant C(2)NO(2) donor set defines a coordination geometry inter-mediate between square-pyramidal and trigonal-pyramidal, with a small tendency towards the former. Zigzag chains running along the a axis mediated by O-H⋯N hydrogen bonding characterize the crystal packing. These are connected into layers in the ab plane by a combination of C-H⋯N and π-π [centroid-centroid distances = 3.658 (2) and 3.6740 (18) Å] inter-actions. The layers are connected along the c axis via C-H⋯O inter-actions.

Fig. 1.

The molecular structure of the first independent molecule of (I) showing the atom-labelling scheme and displacement ellipsoids at the 50% probability level.

Fig. 2.

The molecular structure of the second independent molecule of (I) showing the atom-labelling scheme and displacement ellipsoids at the 50% probability level.

Fig. 3.

A view of the supramolecular chain along the a axis in (I) mediated by O–H···N hydrogen bonding shown as orange dashed lines.

Fig. 4.

A view of the 2-D supramolecular array in the ab plane in (I) with the O–H···N hydrogen bonding, C–H···N and π–π contacts shown as orange, blue and purple dashed lines, respectively.

Fig. 5.

A view in projection down the a axis of (I) showing the stacking of 2-D arrays along the c axis. The C–H···O contacts shown as brown dashed lines.