Improved intermolecular water potential from global geometry optimization of small water clusters using local MP2 Bernd Hartke, Martin Sch¨ utz and Hans-Joachim Werner Institut f¨ ur Theoretische Chemie Universit¨ at Stuttgart Pfaffenwaldring 55 70569 Stuttgart, GERMANY e-mail: hartke@theochem.uni-stuttgart.de e-mail: schuetz@theochem.uni-stuttgart.de e-mail: werner@theochem.uni-stuttgart.de URL: http://www.theochem.uni-stuttgart.de/ Chem.Phys., submitted, July 1998 accepted, September 3, 1998