Professor Raymond (Ray) Martin has made contributions to several fields of inorganic chemistry, including some significant work on the electrochemistry of boron trifluoride coordination compounds but his major work is on the magnetism and structure of transition element compounds. His early magnetic studies on copper acetate and related compounds first drew attention to the copper-copper interactions that was one of the starting points of the current wide-spread interest in metal-metal bonds. Through this and other detailed magnetic studies on transition-element compounds described in numerous original papers he has become an international figure in this field.