Polymorphism of 4-bromobenzophenone.

A combination of single-crystal and powder X-ray diffractometry was used to study the structure of two polymorphs of 4-bromobenzophenone over the temperature range from 100 to 300 K. One of the polymorphs of the title compound was known previously and its structure has been determined at room temperature [Ebbinghaus et al. (1997).

Investigation of the structural phase transitions near 190 K in 4,4'-dichlorobenzophenone.

X-ray structure studies have been carried out on single crystals of 4,4'-dichlorobenzophenone at temperatures from 164 to 295 K. The structure determined at 164 K is monoclinic I2/c. Crystal data: T = 164 K; a = 24.

[Problem of clinico-pathogenetic analysis and correction of behavior disorders in adolescents].

On the basis of integrated clinical, dynamic, and neurophysiological examinations of 542 children and adolescents with behaviour deviations a high (54.05%) percentage of psychic anomalies (primarily, characterological ones) was discovered. The structure of the delinquent behaviour was found to be the most complicated in children and adolescents taught at special schools for juvenile offenders.