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1999
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Research: Science and Education
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Hydrogen Bonds Involving Transition Metal Centers Acting As Proton Acceptors
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Antonio Martín
Universidad de Zaragoza - C. S. I. C., Departamento de Quimica Inorganica - Instituto de Ciencia de Materiales de Aragon, E-50009 Cuidad Universitaria, Zaragoza, SPAIN
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April 1999
Vol. 76 No. 4
p. 578
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| Abstract |
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Hydrogen bonding is probably the most important secondary interatomic interaction. Its capital role in many areas of chemistry is now well documented. In the past few years, an increasing number of examples of a new kind of hydrogen bond involving metal centers of coordination complexes as proton acceptors, M----H-X, has been reported. As occurs with "classic" hydrogen bonds, the M----H-X interaction is established between an electropositive hydrogen atom, bonded to an electronegative residue, and the electron density of the metal center, which behaves as a Lewis base. This interaction can be interpreted in terms of a 3-center-4-electron (3c-4e) bond system. A short review of the most remarkable results which have recently reported M----H-X hydrogen bonds, along with a systematization of their structural and spectroscopic properties, is provided in this paper. These M----H interactions are substantially different from the "agostic" M----H ones, and their differences are commented on, setting up criteria that permit their clear differentiation in order to avoid some of the misidentifications that occurred in the past.
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| More Information |
 Citation |
Tello, Antonio Martín. J. Chem. Educ. 1999 76 578.
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Keywords |
Inorganic Chemistry; Bonding Theory; Coordination Chemistry; Intermolecular Forces; Metals; Organometallics
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History |
Created:
Last Updated: |
June 14, 1999
June 23, 2005
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| Home > JCE Print > Journal of Chemical Education > Issues >
1999
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April
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578
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