Acta Cryst. (2009). E65, m777-m778  [ doi:10.1107/S1600536809021990 ]

[-(4S,5S,15S,16S)-10,21-Di-tert-butyl-4,5,15,16-tetraphenyl-3,6,14,17-tetraazatricyclo[17.3.1.1^8,12]tetracosa-1(23),8,10,12(24),19,21-hexaene-23,24-diolato-⁸N³,N⁶,O²³,O²⁴:N¹⁴N¹⁷,O²³,O²⁴]bis[(acetato-O)zinc(II)] ethanol disolvate

L.-J. Fan, J.-F. Ma and J. Liu

Abstract: In the title compound, [Zn₂(C₃₆H₄₂N₄O₂)(CH₃COO)₂]·2CH₃CH₂OH, a centrosymmetric dinuclear zinc macrocyclic complex is accompanied by two half-occupied ethanol solvent molecues resulting in a 1:2 macrocycle-solvent composition. The Zn^II atom has a square-pyramidal geometry arising from an N₂O₃ donor set, being coordinated by two N atoms and two O atoms from the macrocyclic ligand in the equatorial sites and one O atom from an acetate anion in the apical site. The two Zn^II atoms are linked by two phenolate O atoms, generating a four-membered Zn₂O₂ ring at the centre of the macrocycle. The tert-butyl group shows rotational disorder over two sets of sites in a 0.552 (12):0.448 (12) ratio. In the crystal, N-HO and O-HO hydrogen bonds are seen and a short intramolecular C-HO contact occurs.

Online 17 June 2009

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