It could be a problem with your data, e.g. many overloaded reflections not being removed or F and F^2 mixed up. What is your Wilson B-value?


Prof. George M. Sheldrick FRS
Dept. Structural Chemistry,
University of Goettingen,
Tammannstr. 4,
D37077 Goettingen, Germany
Tel. +49-551-39-3021 or -3068
Fax. +49-551-39-22582

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