Growth of Large Needles and Single Crystals of PbCl2 and PbBr2 in Silica Gel. An Improvement of the New Gel Technique

✍ Scribed by M. Abdulkhadar; M. A. Ittyachan

• Publisher: John Wiley and Sons
• Year: 1982
• Tongue: English
• Weight: 385 KB
• Volume: 17
• Category: Article
• ISSN: 0232-1300
• DOI: 10.1002/crat.2170170105

✦ Synopsis

Abstract

In growing crystals by the new gel technique a principal difficulty may arise in that it may be difficult or at times impossible to choose two nutrients that may react to produce the desired crystals. With some crystals, the pair of nutrients that may appear practically most suitable, may not react at all or the rate of reaction may be exceedingly small. Further work on the new gel technique has now led to an improvement of the technique by which it is feasible to impart activity to nutrients which are normally non‐reactive or to enhance the reactivity of generally less reactive nutrients. Large needles of PbCl~2~ and PbBr~2~ have been grown in silica gel by this improvement of the new gel technique. The interesting phenomenon of transformation of needles of PbCl~2~ and PbBr~2~ into single crystals has been investigate and the various aspects of growth systematically studied.