Coordination compounds as components of silverless photographic systems

Data on the use of 3d- and 4d-element coordination compounds with nitrogen- , oxygen- and sulphur-containing ligands as carriers for silverless photogr aphic images, as active sources of photographic systems, as materials for t he formation of silver halide images, as well as their role in the colour d iffusion transfer process, have been summarized. The review covers the peri od 1970-1996.