Template Synthesis, Crystal Structure, and Spectroscopic Characterization of [N,N′‐Bis(2‐pyridylmethylene)‐1,3‐diamino‐2‐methyl‐2‐nitropropane] copper(II) Perchlorate

Publisher Website
Google Scholar
Abstract
In a facile carbon‐acid condensation reaction of bis(2‐aminomethylpyridine)copper(II) with nitroethane and formaldehyde in basic MeOH the N,N′‐bis(2‐pyridylmethylene)‐1,3‐(diamino‐2‐methyl‐2‐nitropropane)copper(II) cation is produced in essentially quantitative yield. The perchlorate salt crystallizes in space group P21en, a = 9.083(2), b = 15.198(3), c = 16.025(3). Cu(II) is essentially four‐coordinate, though there are weak axial interactions to the perchlorate O‐atoms. There is a large tetrahedral distortion from the least‐squares plane through the Cu and four N donors; with the Cu(II) in the plane, N‐atoms are up to 0.25 Å above or below. Solution spectroscopy confirms that the solution structure of the cation is qualitatively the same as in the solid. The complex and its precursor have been investigated by room‐temperature magnetic‐moment measurement, voltammetry, and by IR, electronic, and electron spin resonance spectroscopy.

This publication has 26 references indexed in Scilit: