Journal
ACTA CRYSTALLOGRAPHICA SECTION B-STRUCTURAL SCIENCE CRYSTAL ENGINEERING AND MATERIALS
Volume 61, Issue -, Pages 115-121Publisher
INT UNION CRYSTALLOGRAPHY
DOI: 10.1107/s0108768104032781
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Strychnine has an interesting oligocyclic structure of seven condensed rings. It is easy to crystallize and gives crystals of excellent quality which diffract nicely to high regions in reciprocal space. It was thus chosen for a comparative charge-density study based on four high-resolution data sets (sin theta/lambda greater than or equal to 1.15 Angstrom(-1)) that were measured with different experimental setups in the temperature range 100 - 15 K. In addition, a theoretical charge density was derived from a B3LYP/6-311++G(3df, 3pd) calculation. The agreement expressed in bond topological parameters among the four experimental charge densities is better than between experiment and theory.
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