Abstract
Abstract The diamagnetic susceptibilities of various series of organic compounds containing one or two ionic functional groups were measured by Guoy’s method. The diamagnetic susceptibilities of ionic functional groups in organic compounds were determined by calculations according to an additive property of the magnetic susceptibility in a combination of Pascal’s method with the diamagnetic susceptibilities of Na+, K+, Cl−, and Br−, which are given by Pascal. The results showed that the diamagnetic susceptibilities of ·COO−, ·SO3−, ·NH3+, and ·N(CH3)3+ are −12.3 × 10−6, −29.2 × 10−6, −13.0 × 10−6, and −39.8 × 10−6 cm3 mol−1, respectively. It became possible to estimate the diamagnetic susceptibilities of organic compounds containing ionic bonds consisting of the above-mentioned ionic functional groups.
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