Bartell mechanism
http://dbpedia.org/resource/Bartell_mechanism an entity of type: ChemicalProcess113446390
The Bartell mechanism is a pseudorotational mechanism similar to the Berry mechanism. It occurs only in molecules with a pentagonal bipyramidal molecular geometry, such as IF7. This mechanism was first predicted by H. B. Bartell. The mechanism exchanges the axial atoms with one pair of the equatorial atoms with an energy requirement of about 2.7 kcal/mol. Similarly to the Berry mechanism in square planar molecules, the symmetry of the intermediary phase of the vibrational mode is "chimeric" of other mechanisms; it displays characteristics of the Berry mechanism, a "lever" mechanism seen in pseudorotation of disphenoidal molecules, and a "turnstile" mechanism (which can be seen in trigonal bipyramidal molecules under certain conditions).
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El mecanismo de Bartell es un mecanismo pseudorrotacional similar al mecanismo de Berry. Sucede solamente en especies con una geometría molecular bipiramidal pentagonal, tales como el IF7. Este mecanismo fue predicho primero por . En este mecanismo, se intercambian los ligandos axiales con un par de ligandos ecuatoriales. Del mismo modo que en el mecanismo de Berry en moléculas cuadradas planas, la simetría de la fase intermediaria del modo vibracional es "quimérica" de otros mecanismos.
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Bartell mechanism
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Mecanismo de Bartell
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15374375
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1065441531
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The Bartell mechanism is a pseudorotational mechanism similar to the Berry mechanism. It occurs only in molecules with a pentagonal bipyramidal molecular geometry, such as IF7. This mechanism was first predicted by H. B. Bartell. The mechanism exchanges the axial atoms with one pair of the equatorial atoms with an energy requirement of about 2.7 kcal/mol. Similarly to the Berry mechanism in square planar molecules, the symmetry of the intermediary phase of the vibrational mode is "chimeric" of other mechanisms; it displays characteristics of the Berry mechanism, a "lever" mechanism seen in pseudorotation of disphenoidal molecules, and a "turnstile" mechanism (which can be seen in trigonal bipyramidal molecules under certain conditions).
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El mecanismo de Bartell es un mecanismo pseudorrotacional similar al mecanismo de Berry. Sucede solamente en especies con una geometría molecular bipiramidal pentagonal, tales como el IF7. Este mecanismo fue predicho primero por . En este mecanismo, se intercambian los ligandos axiales con un par de ligandos ecuatoriales. Del mismo modo que en el mecanismo de Berry en moléculas cuadradas planas, la simetría de la fase intermediaria del modo vibracional es "quimérica" de otros mecanismos.
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1803