The Consistent Force Field: A Documentation: 3 (Lecture Notes in Chemistry, 3) - Softcover

Kjeld Rasmussen, Svetozar R. Niketi?

 
9783540083443: The Consistent Force Field: A Documentation: 3 (Lecture Notes in Chemistry, 3)
Softcover
ISBN 10: 3540083448 ISBN 13: 9783540083443
Verlag: Springer Berlin Heidelberg, 1977

Inhaltsangabe

In this chapter ve shall discuss the calculation of potential energy associated vith molecular conforaations. Raving obtained cartesian atoaic coordinates defining conforaations. and lists of intraao- cular interactions, as described in Chapter 3, ve are ready to calculate a quantity which in the chemical literature is known as the total aolecular potential energy or the conforaational, steric, strain or intraaolecular energy. ~he conformational energy of a aolecule can be expressed as a function , of all internal coordinates and interatoaic distances, or as a function of atoaic positions specified by soae general coordi­ Dates. ~he function , is supposed to haye local ainiaa corresponding to the stable equilibrium conforaations of a aolecule in vacuo, Deglecting interaolecular interactions. ~he exact fora of Y is. of course, unknown. We assume that it can be suitably approximated by a sua of different types of energy contri­ hutions: , = Y ., +, +, ., be. nb e ~he teras represent cODtributions to the total aolecular potential energy , due to bond stretching and coapression teras Vb’ valence aDgle bending teras ’e’ iDterDal rotational or torsional teras V,. DOD-bonded interactions ’nb and electrostatic or Couloab iDter­ actions ’e. If there are other intraaolecular aechanisas affecting 79 V, sucD as hydrogen bonding, corresponding terms say be added.

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Reseña del editor

In this chapter ve shall discuss the calculation of potential energy associated vith molecular conforaations. Raving obtained cartesian atoaic coordinates defining conforaations. and lists of intraao- cular interactions, as described in Chapter 3, ve are ready to calculate a quantity which in the chemical literature is known as the total aolecular potential energy or the conforaational, steric, strain or intraaolecular energy. ~he conformational energy of a aolecule can be expressed as a function , of all internal coordinates and interatoaic distances, or as a function of atoaic positions specified by soae general coordi­ Dates. ~he function , is supposed to haye local ainiaa corresponding to the stable equilibrium conforaations of a aolecule in vacuo, Deglecting interaolecular interactions. ~he exact fora of Y is. of course, unknown. We assume that it can be suitably approximated by a sua of different types of energy contri­ hutions: , = Y ., +, +, ., be. nb e ~he teras represent cODtributions to the total aolecular potential energy , due to bond stretching and coapression teras Vb' valence aDgle bending teras 'e' iDterDal rotational or torsional teras V,. DOD-bonded interactions 'nb and electrostatic or Couloab iDter­ actions 'e. If there are other intraaolecular aechanisas affecting 79 V, sucD as hydrogen bonding, corresponding terms say be added.

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Verlag
Springer Berlin Heidelberg
Erscheinungsdatum
1977
Sprache
Englisch
ISBN 10 
3540083448
ISBN 13 
9783540083443
Einband
Tapa blanda
Anzahl der Seiten
228
Kontakt zum Hersteller
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ISBN 10:  0387083448 ISBN 13:  9780387083445
Softcover