Nov., 1936 VOLUME CHANGE IN CYANATE AND THIOCYANATE ... [CONTRIBUTION NO. 144 FROM THE MASSACHUSETTS INSTITUTE OF TECHNOLOGY, RESEARCH LABORATORY OF ORGANIC CHEMISTRY] Metal Pyridine Complex Salts. V.' Volume Change During Formation of Cyanates and Thiocyanates ... BY TENNEY L. DAVIS AND ALBERT V. LOGAN ... The fact that cobaltous thiocyanate forms com- pounds only with two and with four molecules of ...