Magic-angle sample-spinning n.m.r. spectroscopy of an antiferromagnetically coupled copper formate dimer
Abstract
The first solid-state carbon-13 magic-angle sample-spinning n.m.r. spectra of an antiferromagnetically-coupled species, [Cu(HCO2)2(C5H5N)]2 are reported, the results indicating that essentially diamagnetic behaviour can be observed at –180 °C, while increasing temperature results in a shifted and progressively broadened resonance, owing to spin unpairing.