Compounds formed by Mannich reaction of a coordinated amine with an α-methylene nitro compound and formaldehyde - Syntheses and structures

This review covers compounds formed by Mannich-like reactions of coordinated amine-compounds with an α-methylene nitro-compound (usually nitroethane) and an aldehyde (predominantly formaldehyde) to form a compound with two primary amine functions joined by a -NH-(CH2)-C(NO2)(CH3)-(CH2)-NH- link, forming a new chelate ring. Most reported compounds have tetraaza-macrocyclic ligands. Copper(II) is the usual “templating” metal ion, with compounds of nickel(II), palladium(II), platinum(II) and gold(III) also reported. The refcodes of compound with structures in the Cambridge Crystallographic Data Centre files are listed and structural figures of representative examples shown.99