Moushumi Sarma

Nitric Oxide Reduction of Copper(II) Complexes: Spectroscopic Evidence of Copper(II)−Nitrosyl Intermediate

Two copper(II) complexes, 1 and 2 with L(1) and L(2) [L(1) = 2- aminomethyl pyridine; L(2) = bis-(2-aminoethyl)amine], respectively, in degassed acetonitrile solvent, on exposure to NO gas, were found to form a thermally unstable [Cu(II)-NO] intermediate which then resulted in the reduction of the copper(II) centers. The formation of the [Cu(II)-NO] intermediate was evidenced by UV-visible, FT-IR, and EPR spectroscopic studies. The reduction of the copper(II) centers by nitric oxide afforded ligand transformation through diazotization at the primary amine coordination site, in both cases. The modified ligands, in each case, were isolated and characterized.

Reduction of copper(II) complexes of tripodal ligands by nitric oxide and trinitrosation of the ligands.

The copper(II) centers in two copper(II) complexes of tripodal amine ligands, in acetonitrile solvent, upon exposure to nitric oxide have been found to produce a thermally unstable [Cu(II)-NO] intermediate followed by the reduction of copper(II) to copper(I). This reduction resulted in the concomitant trinitrosation of the ligands at their terminal amine centers.

4-Acetoxy-3,5,6-trimethyl-2-(3-oxobutyl)phenyl 4-nitrobenzoate

The title compound is a multi-functional compound and a potential intermediate for making new molecular entities. The molecules, in the lattice, are held together by van der Waals interactions. The three substituents other than methyl have essentially planar skeletons, each of which is approximately perpendicular to the hexa-substituted aromatic ring.