Diversity in coordination behavior of dipicolinic acid with lead(II), calcium(II), and nickel(II) in the presence of pyrazine and 2-amino-4-methylpyridine spacers in construction of three supramolecular architectures

Synthesis and characterization of some metal complexes of a proton transfer salt, and their inhibition studies on carbonic anhydrase isozymes and the evaluation of the results by statistical analysis

“…The methoxy group of one of the (HMeOABT) + cations (C28) was disordered such that the methoxy group had occupancy of 0.485(6) at the site C28a and occupancy of 0.515(6) at the site C28b. In all essential details, the geometry of the complex regarding bond lengths and angles of the compound is in good agreement with the values observed in similar Ni(II) complexes 3, 35,36 . 1 H NMR studies of (HMeOABT)…”

A comparison of solution and solid state coordination environments for calcium(II), zirconium(IV), cadmium(II) and mercury(II) complexes with dipicolinic acid and methylimidazole derivatives

“…The 2-mim forms relative weak complexes with Ca 2+ and Cd 2+ similar to what was seen for other M 2+ cations [26,27], while the complexation between 1-mim and Zr 4+ ion is relatively strong. The interaction for 2-mim/Hg 2+ is similar to imidazole/Hg 2+ [30] and pydc-M n+ systems [12,24,[31][32][33][34] and is relatively strong, except for the pydc-Ca 2+ system. The cumulative stability constants of M m L l Q q H h , β mlqh , are defined in our previous publications [13,26] where M, L, Q, Q‫׳‬ and H are metal ion, pydc, 2-mim, 1-mim and proton, respectively, and m, l, q and h are the respective stoichiometric coefficients.…”

Di-μ-chlorido-bis[(2-amino-4-methylpyridine-κN)chloridomercury(II)]

“…Contrary to other derivatives of aminopicolines, less work has been done on the synthesis of the complexes merely containing 2-amino-4-methylpyridine and most of the work is focused on its mixed ligand complexes (Zhang et al, 2008;Castillo et al, 2001;Yenikaya et al, 2011) or proton transfer compounds (Gharbia et al, 2008;Choudhury et al, 2009;Das et al, 2010;Hemamalini & Fun, 2010;Aghabozorg et al, 2011;Eshtiagh-Hosseini et al, 2010).…”