4.6 Article

Analytical gradient for geometry optimizations of (H2O)n- clusters as described by the PM1 polarizable model

Journal

CHEMICAL PHYSICS LETTERS
Volume 464, Issue 4-6, Pages 139-143

Publisher

ELSEVIER SCIENCE BV
DOI: 10.1016/j.cplett.2008.09.002

Keywords

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Funding

  1. National Science Foundation [CHE518253]
  2. Division Of Chemistry
  3. Direct For Mathematical & Physical Scien [0809457] Funding Source: National Science Foundation

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Expressions for the analytical gradients of the PM1 polarization model for describing the interaction of excess electrons with water clusters are reported. For the (H2O)(45)(-) cluster, evaluation of the gradient by use of the analytical expressions lead to a factor of five speedup over numerical evaluation of the gradient. (C) 2008 Elsevier B.V. All rights reserved.

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