Determination of the Magnetic Moments of Transition Metal Complexes Using Rare Earth Magnets

Kevin C. de Berg and Kenneth J. Chapman
Department of Chemistry, Avondale College, PO Box 19, Cooranbong, NSW 2265, Australia
J. Chem. Educ., 2001, 78 (5), p 670
DOI: 10.1021/ed078p670
Publication Date (Web): May 1, 2001

Abstract

This paper describes how powerful neodymium magnets and an electronic balance can be used to determine magnetic moments and susceptibilities of transition metal complexes. The technique is an improvement on one previously reported (J. Chem. Educ. 1998, 75, 61) and allows the effect of temperature on paramagnetism to be studied. Results consistent with the Curie law are reported and a theoretical background to the measurement of magnetic moments is given to explain why magnetic field strength and its gradient are important to the technique described.

Keywords (Audience):

Second-Year Undergraduate

Keywords (Domain):

Inorganic Chemistry

Keywords (Pedagogy):

Hands-On Learning / Manipulatives

Keywords (Subject):

Coordination Compounds

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History

  • Received: August 03, 2009

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