Accession Number : AD0415891

Title :   X-RAY STUDIES OF COMPLEX IONS AND THEIR SALTS WITH ORGANIC BASES AND ORGANIC OXYGEN COMPOUNDS.

Descriptive Note : Summary final rept.,

Corporate Author : CRYSTAL RESEARCH LAB PENNSYLVANIA STATE UNIV UNIVERSITY PARK

Personal Author(s) : Pepinsky,Ray

Report Date : 01 OCT 1959

Pagination or Media Count : 4

Abstract : A method whereby the molecules to be studied can be crystallized in structures whose X-ray analysis would be certain of success is discussed. The method is described under the title of ''crystal engineering'' or ''crystal design ing''. In essence, the method involves precipitation in crystalline form of the organic molecules, generally in ionic form, but diluted structurally by sizable groups of atoms of the class known as complex ions, which dominate the packing of the structures. The structure of these complex ions is generally known, and in any case readily determinable. They contain heavier atoms of the sort necessary both for application of the classical ''heavy-atom'' x-ray method. The entire complec ion is very effective in establishing phases of the scattered x-rays, and thus in analyzing the entire structure. The organic ions are always located in spaces between the complex ions, simplifying analysis. A new method of crystal analysis is reported by means of which structure and absolute configuration of a non-centric crystal can be determined. (Author)

Descriptors :   (*ORGANIC COMPOUNDS, X RAY DIFFRACTION), (*X RAY DIFFRACTION, ORGANIC COMPOUNDS), (*IONS, X RAY DIFFRACTION), (*COMPLEX COMPOUNDS, X RAY DIFFRACTION), (*CRYSTAL STRUCTURE, ORGANIC COMPOUNDS), CRYSTALLIZATION

Distribution Statement : APPROVED FOR PUBLIC RELEASE