Crystal structure of diaquabis(6-hydroxy-3-pyridazinecarboxylato)- nickel(II) dihydrate, Ni(H2O)2(C5H3N2O3)2 · 2H2O

Abstract

Source of materialAm ixed solution of 6-hydroxy-3-pyridazinecarboxylic acid (0.05 mmol) and NiCl 2 · 6H 2 O(5mmol) in distilled water (10 ml) in the presence of excess 2,6-dimethylpyridine (ca. 0.05 ml for adjusting the pH value to the basic condition) was stirred for 5min. Experimental detailsAll the hydrogen atoms were included in calculated positions and treated as riding with DiscussionThe rational design and construction of coordination complexes based upon assembly of metal ions and multifunctional organic ligands is an interesting research field. This not only stems from their potential application as functional materials but also from their intriguing structural features [1][2][3]. In principle, the structural motifs of these molecular assemblies are defined by the

Crystal structure of diaqua-(2,9-dimethyl-1,10-phenanthroline-κ2 N,N')- (4-hydroxybenzoato-κ2 O,O')-nickel(II) nitrate dihydrate, C21H25N3NiO10

“…This is very helpful in designing and exploring novels ystems. Recently,Iobtaineda Ni(II)c omplex including 2,9-dimethyl-1,10-phenanthroline (DMPH)and 4-hydroxybenzoatate acid (4-OHB)mixed ligands, and found itsstructure to be similar to thatofNi(II) [2][3][4], Co(II) [5,6] [7,8 ]. The corresponding Ni-O and Ni-N bond distances are inequivalent, different from the previously reported nickel compounds with DMPH and benzoate acid ligands [2][3].…”