ABSTRACT
Magnetic phenomena observed upon introducing a substance into magnetic field are paramagnetism and diamagnetism. Paramagnetism is the property associated with unpaired electrons, and diamagnetism is associated with filled electron orbitals. One of the most promising lines of inquiry in modern inorganic chemistry is the chemistry of polynuclear complexes. The method of magnetic susceptibility may be an instrument for distinguishing the clusters and describing their electron structure, type, and energy of exchange interactions. In solid-state chemistry the method of magnetic susceptibility has rather long been in use, but its successes may be considered fairly modest. Magnetic ordering in crystalline solids imposes limitations on the method of magnetic susceptibility. The magnetic susceptibility of the samples is measured over a widest possible temperature range. The diamagnetic matrix must be measured over the same temperature range since it is necessary to introduce the diamagnetic corrections.
