Influence of the alkaline cation on the structures of polymeric o-phthalatocuprate(II). I. The crystal structures of dilithium catena-di-μ-(o-phthalato)-cuprate(II) tetrahydrate and dirubidium catena-di-μ-(o-phthalato)-cuprate(II) dihydrate

The nature of Cu bonding to natural organic matter

“…There was no hint under our experimental conditions for dimerization of Cu, as observed for some phthalate, benzoate, acetate, and succinate molecular complexes (Koizumi et al, 1963;Cingi et al, 1970Cingi et al, , 1977Cingi et al, , 1978aCingi et al, ,b, 1979Prout et al, 1971;Brown and Chidambaram, 1973;De Meester et al, 1973;O'Connor and Maslen, 1996;Rodrigues et al, 1999). All experimental data are from mononuclear complexes, in agreement with previous studies of NOM (Davies et al, 1997;Xia et al, 1997;Korshin et al, 1998;Alcacio et al, 2001;Lee et al, 2005;Karlsson and Skyllberg, 2006;Strawn and Baker, 2008).…”

Adsorption of Cu(II) to Bacillus subtilis: A pH-dependent EXAFS and thermodynamic modelling study

“…We constructed a model cluster based on our optimized cluster for hydrated Cu and initially considered one C atom to model the monodentate Cu-C binding environment (where the C atom is that of the -COO(H) group in (CH 3 -COO)). Crystallographic data to date indicate this Cu-C distance in monodentate Cu-carboxyl compounds is between $2.8 and 3.3 Å (e.g., Koizumi et al, 1963;Cingi et al, 1977;Hoang and Valach, 1992). We observe a small peak in the Fourier transform at $2.9 Å (Figs.…”

“…In order to rule out as far as possible the minor presence of Cu bound to -COO(H) groups in bidentate configuration, we constructed hypothetical model clusters with C 1 symmetry, and with a Cu-C bond distance at $2.6-2.7 Å , based on crystallographic data to date for bidentate Cucarboxyl compounds (e.g., Cingi et al, 1977;Mizutani et al, 1998;Wang et al, 2006). We are unable to fit our B. subtilis samples by refining a bidentate cluster; we are also unable to statistically improve the fits above by including a bidentate cluster in addition to the Cu-acetate solution standard cluster optimized for EF.…”