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Semiopen Physical Vapour Transport Growth of Urotropine Crystals

✍ Scribed by M. Zha; C. Ferrari; S. Gennari; L. Zanotti; C. Razetti; C. Paorici

Publisher: John Wiley and Sons
Year: 1999
Tongue: English
Weight: 331 KB
Volume: 34
Category: Article
ISSN: 0232-1300
DOI: 10.1002/(sici)1521-4079(199903)34:3<311::aid-crat311>3.0.co;2-h

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✦ Synopsis

It is reported for the first time the growth of urotropine (HMT) crystals by a semiopen physical vapour transport (SOPVT) technique. HMT crystals, approximately 1 cm 3 in volume, are grown on a glass pedestal from solution-grown seeds. The final habit of the crystals is limited by rhomboedrical {110} faces which develop on an otherwise hemispherical shape. Preliminary X-ray diffraction investigations (rocking curves and topographs) point to a still non-homogeneous crystal structure, which very likely originates at the seed-crystal interface. However, in comparison with solution-grown samples, the best structural quality was observed in a SOPVT-grown sample.

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