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The Cu atoms in aquabis(tert-butyl acetoacetato)aquocopper(II), [Cu(C8H13O3)2(H2O)], and bis(dipivaloylmethanido)copper(II), [Cu(C11H19O2)2], adopt square-pyramidal and planar conformations, respectively, with average Cu-O distances of 1.933 Å in the former (not including water ligand) and 1.892 Å in the latter. It is interesting to note that the lability of the tert-butyl and methyl groups in both structures, which renders even the location of the terminal C atoms difficult, is reduced at T = 130 K enabling location of all the protons in the difference Fourier map.

Supporting information

cif

Crystallographic Information File (CIF)
Contains datablocks I, II, global

CCDC references: 126562; 126563

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