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High‐Resolution Metal NMR Spectroscopy of Organometallic Compounds [New Analytical Methods (30)]
Author(s) -
Benn Reinhard,
Rufińska Anna
Publication year - 1986
Publication title -
angewandte chemie international edition in english
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 5.831
H-Index - 550
eISSN - 1521-3773
pISSN - 0570-0833
DOI - 10.1002/anie.198608611
Subject(s) - nuclear magnetic resonance spectroscopy , spectroscopy , chemistry , metal , chemical shift , group 2 organometallic chemistry , organometallic chemistry , coordination complex , reactivity (psychology) , computational chemistry , atomic orbital , chemical physics , molecule , crystallography , organic chemistry , physics , medicine , alternative medicine , pathology , quantum mechanics , crystal structure , electron
Great advances have been made in the past decade in the field of NMR spectroscopy. Apart from the development of completely new areas of application, such as in solid‐state chemistry, in materials science, in physiological chemistry, and in medicine, with the introduction of new pulse spectroscopic methods and the application of high magnetic field strengths important progress has also been made in the traditional field of high‐resolution NMR spectroscopy. Thus, among other things, the observation of metal resonances has been facilitated and new areas of application have been opened up in inorganic and organometallic chemistry. In this review, recent detection methods for spin‐1/2 and quadrupolar metal nuclei are presented and discussed. The use of metal‐NMR spectroscopy with respect to problems of a typical chemical nature, mainly from the field of organometallics, is demonstrated for a number of selected metal nuclei ( 25 Mg, 27 Al, 49 Ti, 57 Fe, 59 Co, 61 Ni, 91 Zr, 103 Rh, and 195 Pt). Relations found empirically between chemical shifts and coordination number, oxidation number, and electronic configuration of a metal bound in a complex are emphasized. Furthermore, cases in which the chemical shifts of metal nuclei can be interpreted in terms of the energy difference of frontier orbitals are presented. This aspect leads to the establishment of a relationship between chemical reactivity and NMR parameters for a series of related compounds.