Synthesis and Crystal Structure of Bis(<i>O</i>-ethyldithiocarbonato)bis(4-ethylpyridine)nickel(II)

Abstract

Dithioicarbonato ligands, ] are known to coordinate metal centres in a variety of coordination modes, e.g. monodentate, bidentate, chelating or bridging. 1,2 The coordination chemistry of divalent transition metals with bidentate chelating dithiocarbonato ligands has been intensively investigated structurally. [3][4][5] This has been explained on the basis of their ability to interact strongly with Lewis bases, resulting in several physicochemical changes in dithiocarbonato ligands, which needs to be established structurally. As a part of our study on the characterization of adducts of bis(O-alkyldithiocarbonato)Ni(II) with nitrogen donor ligands, we report the synthesis and X-ray crystal structure of bis(Oethyldithiocarbonato)bis(4-ethylpyridine)nickel(II) in this paper.The potassium salt of O-ethyldithiocarbonate is prepared by reacting potassium hydroxide, carbon disulfide and ethyl alcohol according to a method available in the literature. 6 The complex bis(O-ethyldithiocarbonato)nickel(II) was prepared by stirring an aqueous solutions of nickel (II)

Synthesis, Characterization, and X-Ray Structure of Bis(O-butyldithiocarbonato)bis(3-ethyl pyridine)nickel(II)

“…These values show double bond character due to the delocalization over the two C-S bonds [19]. The bond angles in the pyridine ring vary from 117.8(4) to 124.1 (4) ∘ , the average value being 119.9(8) ∘ , and these values of bond angles and bond distances are in good agreement with those reported for some analogous Ni-dithiocarbonato complexes [20][21][22][23]. The plane formed by the atoms Ni1, S1, C1, and S2 makes a dihedral angle of 88.20 (9) ∘ with the plane of ethyl-pyridine ring, meaning thereby that both planes are held almost perpendicular to each other.…”