Magneton Numbers of Iron in some Complex Salts

Abstract

MR. WELO'S interesting letter directs attention to the fact that the iron atoms in various complex cyanides possess quite different magnetic properties from the iron atoms in simple ferrous or ferric salts. The existence of iron atoms which are either paramagnetic, but have a moment considerably smaller than that found in the simple salts, or even diamagnetic (zero magnetic moment) finds a parallel in the observation of Pascal that oxygen may function in organic compounds as a paramagnetic element with the "usual" moment, as paramagnetic with a lesser moment and also as diamagnetic.