In this book, the authors present current research in the study of the compounds, production and applications of platinum. Topics discussed include the structural aspects of platinum coordination complexes; the problems of geochemical antagonism between REE and PGE in mafic and ultramafic rocks and their petrogenetic significance; the synthesis of platinum complexes of cyclic phosphines and bisphosphines; platinum films YSZ with different types of grain boundaries; platinum nanoparticles and inflammation; and platinum-halide square-prism compounds and their optical features.