Accession Number:

ADA012950

Title:

Cyanomolybdate Chemistry Design and Study of Inorganic Photochromic Systems.

Descriptive Note:

Final rept. 25 Mar 69-30 Apr 75,

Corporate Author:

CALIFORNIA INST OF TECH PASADENA

Personal Author(s):

Report Date:

1975-06-01

Pagination or Media Count:

16.0

Abstract:

The authors research directed toward the development of highly efficient, inorganic photochromic systems is described briefly. Initially, it was discovered that yellow, oxygen-free solutions of MoCN74- turn dark green upon photolysis with reversal occurring in the dark. It was established that added CN- inhibits formation of the photoproduct, whereas added acid slows the dark reaction. These results suggest that a primary photoreaction is loss of CN-. The coordinatively unsaturated cyanomolybdate species probably dimerizes or polymerizes to one or more strongly absorbing complexes. In view of the likely nature of the key photoproduct in the above photochromic cycle, the spectroscopic properties of model metal-metal bonded and mixed-valence binuclear systems have been studied in detail.

Subject Categories:

  • Radiation and Nuclear Chemistry

Distribution Statement:

APPROVED FOR PUBLIC RELEASE