ChemInform Abstract: Recent Developments in NMR Spectroscopy of Organometallic Compounds

Abstract

Publisher Summary This chapter discusses the recent developments in nuclear magnetic resonance (NMR) spectroscopy of organometallic compounds. The experimental aspects and some results from multinuclear NMR spectroscopy and some examples from solid-state NMR spectroscopy are examined. Modern NMR spectrometers have powerful routines to modify the free induction decay and hence the resolution and signal/noise ratio. Homonuclear decoupling has long been established as a valuable tool in determining which nuclei are coupled. The Nuclear Overhauser Enhancement (NOE) is one of the most valuable tools in determining the connectivity among protons and, to a lesser extent, between protons and other nuclei. The sensitivity of an NMR experiment depends on the population difference among the energy levels. The Incredible Natural Abundurice Double Quantum Transfer Experiment (in adequate) pulse sequence was originally designed to detect 13 C – 13 C coupling without the confusion of the 13 C singlets due to the species without adjacent 13 C atoms. The normal π /2 pulse excites nuclei over a wide range of frequencies. Broadband decoupling has been applied for many years to obtain X-nuclei NMR spectra without 1 H coupling. Until very recently, variable-temperature solid-state NMR spectroscopy with magic angle spinning has been restricted close to room temperature because of the great difficulty of spinning the sample at high speed.