... Soc. 1946, 68, 2103. (b) The thiol ester method: see ref 1. (c) The thiocyanate method: The Chemistry of Cyanates and Their Thio Derivatives; Patai, S., Ed.; Wiley: New York, 1977; p 819. ... (12) Allara, DL In Characterization of Organic Thin Films ... 4960 J. Org. Chem., Vol. 64, No. ...