Crystal and molecular structures of eight-coordinate (CuN4O4) and six-coordinate (CuN4O2) Cu(II) complexes with 4-methyl-5-imidazole-carboxaldehyde or 1-benzyl-2-hydroxymethylimidazole, respectively

Synthesis, characterization and X-ray structural studies of three hybrid inorganic–organic compounds: Silver(I)-, lead(II)- and tris(phenanthroline)copper(II)- 2,6-naphthalenedisulfonate (2,6-nds)

“…X type compounds in solid state is rather rare according to our knowledge and was observed for the compound with X=(PF 6 ) 2, [37] but not in case when X=1,3-benzenedisulfonate [20]. [38] appeared to be consistent with the trend in the shortest Cu-Cu distances based on the crystal structure, about 9.6 Å and 8.1 Å, respectively. The same trend for the [Cu(phen) 3 ] 2+ .X type complexes is seen between the spectrum characteristics and Cu-Cu distance.…”

Ligation of alkoxymethylimidazoles towards cadmium(II) and zinc(II). X-ray, spectroscopic, thermal and potentiometric investigation

“…The loss in the 65-110°C temperature range corresponds exactly to the release of two water molecules. Lattice H 2 O, weakly bound is generally lost in an endothermic process at < 90°C [26]. The temperature above or below 100°C at which compounds lose their final water molecules may be used to identify the presence of coordination water molecules.…”

A Fluxional CuIN2O2 Core: Binding of a Keto Oxygen Atom to CuI and AgI

“…[4] On the other hand, several structurally characterised examples of copper(ii) complexes containing bonds between Cu II and the carbonyl O atom of some aldehydes/ ketones are known. [5][6][7][8] For example, in azurin − a blue copper-containing protein − there is a peptide carbonyl O atom in close proximity to the metal ion [mean Cu I -O distance = 3.22 Å; mean Cu II -O distance = 3.13 Å], [9] although it is doubtful whether this O atom is bonded to the copper atom [ in azurin. [10] Thus, the possibility of a copper(i)-keto oxygen bond is of biological relevance as well.…”