Pressure in Coordination Chemistry I
Nickel(II) salicylaldimines and aminotroponeimineates
The anomalous magnetic and spectroscopic behavior of a number of N-substituted Ni(II) salicylaldimine and aminotroponeimine complexes in solution has been examined over a range of pressures. The susceptibility of the aminotroponeimincates is found to decrease with pressure, indicating that the planar, diamagnetic form of the complex has a smaller volume in solution than the tetrahedral form. The susceptibility of the salicylaldimine complexes, on the other hand, is found to increase with pressure indicating that the associated complexes are formed with a decrease in volume. For n-alkyl but not sec-alkyl salicylaldimines the contribution of a planar-tetrahedral equilibrium to the pressure dependence is negligible.
A. H. Ewald and E. Sinn, "Pressure in Coordination Chemistry I," Inorganic Chemistry, American Chemical Society (ACS), Jan 1967.
The definitive version is available at http://dx.doi.org/10.1021/ic50047a010
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© 1967 American Chemical Society (ACS), All rights reserved.