Crystal and molecular structure of (2-oximino-11-(oximinato)-3,10-dimethyl-4,9-diazadodeca-3,9-diene)copper(II) perchlorate
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[Cu(Me4OHOteteneN4)](ClO4), (C12H21N4O2Cu)(ClO4), crystallizes in the space group P21/n with a = 6.490 (2) Å, b = 21.727 (5) Å, c = 12.398 (4) Å, β = 96.58 (3)°, and Z = 4. The structure was anisotropically refined to RF = 0.037 and RwF = 0.045 for 1445 unique reflections having intensities greater than 3σ (I). Each cupric ion is bound to four imine nitrogen atoms of one ligand and to the oximinato oxygen (O1) of an adjacent complex, forming a dimeric structure. The coordination geometry is square pyramidal distorted toward trigonal bipyramidal. The ligand is cyclic by reason of hydrogen bonding between the oxime hydrogen (on O2) and the oximinato oxygen (O1). Variable-temperature magnetic measurements between 75 and 300 K indicate that there is very little magnetic exchange between the two Cu(II) atoms of the dimer. © 1981, American Chemical Society. All rights reserved.
author list (cited authors)
Timmons, J. H., Martin, J., Martell, A. E., Rudolf, P., Clearfield, A., & Buckley, R. C.