Structure of a nickel(II) complex of the deprotonated anion of 3,9-dimethyl-4,8-diaza-3,8-undecadiene-2,10-dione dioxime

Abstract

Abstract.Bis{ 3,Y-(trimethylenedinitrilo)di[2-butanone oximato(1 -)]}nickel(II) perchlorate, [Ni-* To whom correspondence should be addressed.0108-2701/90/081429-04503.00

Synthesis and characterization of a tetramethyl furanone functionalized diiminedioxime, a potential ligand for 64Cu radiopharmaceuticals, and its copper(II) and nickel(II) complexes

“…The Ni-N bond lengths range from 1.884(4) to 1.921(4) Å, slightly longer than those observed for [Ni(PreH)]ClO 4 , which range from 1.869(5) to 1.892(5) Å [27] and Ni-Me 2 PreH, which range from 1.866(5) to 1.887(3) Å [28]. The lengthening of the Ni-N bonds is presumably due to the greater displacement of the Ni atom from the plane in this complex than in the two previous examples (0.018 Å for Ni-PreH [27] and 0.056 Å for Ni-Me 2 PreH [28]) and shorter Ni-O(perchlorate) distance (2.504(5) Å and 2.512(4) Å) in this complex compared to the two Ni-PreH complexes (2.84 Å and 2.902(5) Å). The structure of the ligand itself is similar to that seen in 1 and 2 except that in this case the central carbon atom of the trimethylene bridge is disordered in molecule A.…”

Structure of a nickel(II) complex of the deprotonated anion of 3,6,6,9-tetramethyl-4,8-diaza-3,8-undecadiene-2,10-dione dioxime

“…Transition-metal complexes of deprotonated diaza-dioximes present considerable interest in the formation of strong intramolecular hydrogen bonds between cis oxime groups (Wang, Chung, Cheng & Wang, 1990;Fair & Schlemper, 1978;Gavel & Schlemper, 1979;Liss & Schlemper, 1975). We have recently reported the structure of a Ni ~ complex with the deprotonated anion of 3,9-dimethyl-4,8-diaza-3,8-undecadiene-2,10-dione dioxime (Wang, Chung, Cheng & Wang, 1990).…”