One-dimensional cadmium(II)/bicinate(−1) complexes : The role of the alkali metal ion used in the reaction medium

Modeling the Solvent Extraction of Cadmium(II) from Aqueous Chloride Solutions by 2-pyridyl Ketoximes: A Coordination Chemistry Approach

“…The Cd-Cl bond lengths in 1∙ H 2 O [2.532(1) and 2.534(1) Å] are shorter than those in 2 [2.564(1)–2.686(1) Å] due to the terminal character of the chloro ligands in the former versus the bridging one in the latter. The bridging Cd-Cl bond distances in 2 are typical for other six-coordinate Cd(II) complexes containing bridging chloro groups [15]. The carbon-nitrogen [1.278(3)–1.293(5) Å] and nitrogen-oxygen [1.381(3)–1.387(3) Å] bond lengths of the coordinated oxime groups are similar (for a given bond type) in the two complexes; the nitrogen-oxygen bonds are longer than the carbon-nitrogen bonds due to their different multiplicity (single versus double).…”

“…This paper describes our results from the synthetic investigation of the general reaction system CdCl 2 ∙2H 2 O/phpaoH and from the full structural and spectroscopic characterization of the products; the implication of our study with respect to the solvent extraction of Cd(II) from aqueous chloride solutions by 2-pyridyl ketoximes have also been critically discussed. The present work can be considered as a continuation of our interest in several aspects of Cd(II) chemistry [15,16,17,18,19,20] and the coordination chemistry of 2-pyridyl oximes (aldo-, keto-, and amidoximes) [20,21,22,23,24,25,26,27,28,29,30,31,32,33]. Our previous experience on the latter area shows that phpaoH behaves similarly with methyl 2-pyridyl ketoxime (mepaoH; the substituent on the oxime carbon atom is a methyl group) [21,30] in 3d- and mixed 3d/4f-metal complexes, and this justifies partly the choice of phpaoH for our model studies.…”

Crystal structure, solvothermal synthesis, thermogravimetric studies and DFT calculations of a five-coordinate cobalt(II) compound based on the N,N-bis(2-hydroxyethyl)glycine anion

“…A search of the Cambridge Structural Database (CSD; Groom et al, 2016) was carried out for structures containing the bicH 3 ligand. This revealed bicH 3 coordinating to a lanthanide metal (Inomata et al, 2001), Cd and Na (Katsoulakou et al, 2011), Cu, Ni and Zn (Thakuria & Das, 2007;Liu et al, 2013;Lo & Ng, 2010), Re, Mn and Fe (Kirillov et al, 2005;Sun et al, 1997;Graham et al, 2009). A related structure with copper and bromide (Yamaguchi et al, 1991) shows a very similar mononuclear crystal structure to the title compound.…”

Crystal structure of bis[N,N-bis(2-hydroxyethyl)glycinato-κ3O1,N,O2]cobalt(II) monohydrate

“…As an analogous ligand, N,N-bis(2-hydroxyethyl) glycine is a widely used buffer in many biochemical studies. However, transition metal complexes with N,N-bis(2-hydroxyethyl) glycine has been less extensively studied, and only a few reports describing N,N-bis(2-hydroxyethyl) glycine complexes have appeared (Graham et al, 2009;Katsoulakou et al, 2011;Liu et al, 2013;Inomata et al, 2001;Messimeri et al, 2002). In the present report, we describe the synthesis and structure of title compound.…”

“…For N,N-bis(2-hydroxyethyl)glycine complexes with transition metals, see: Graham et al (2009); Katsoulakou et al (2011); Liu et al (2013); Inomata et al (2001); Messimeri et al (2002). Iminodiacetic acid (Cui et al, 2008;Kong et al, 2008), nitrilotriacetic acid (Ma et al, 2009) and N-(2-carbamoylmethyl)iminodiacetic acid (Bugella-Altamirano et al, 2003) are also known to be effective ligands for transition metal ions.…”