Triiodide symmetry

The crystal field does, however, have a dramatic effect on the magnetic anisotropy of lanthanide complexes. For complexes of less than cubic symmetry the three principal values of the susceptibility tensor are unequal. For uniaxial symmetry, Xx — Xy Xz and for biaxial symmetry Xx Xy Xz- Very extensive studies632-640 have been carried out on the single crystal susceptibilities of the D3d lanthanide hexakis(antipyrene) triiodides over the temperature range 80-300 K, and crystal field parameters were obtained. This crystal field-induced anisotropy is responsible for the effectiveness of lanthanide complexes as NMR shift reagents, and single crystal anisotropies of lanthanide complexes have been determined in this connection also.563... 

K. The predicted structures of the various iodides are the same as the bromides, that is Ti symmetry (tetraiodide), planar (triiodide) and linear (diiodide). From the measured data, van der Vis et al. [97VIS/COR] calculated the following heat capacity and entropy values for the gaseous zirconium iodides ... 

Johnson AE, Myers AB (1996) Solvent effects in the Raman spectra of the triiodide ion observation of dynamic symmetry breaking and solvent degrees of freedom. J Phys Chem 100 7778-7788... 

Margulis CJ, Coker DF, Lynden-Bell RM (2001) Symmetry breaking of the triiodide ion in acetonitrile solution. Chem Phys Lett 341 557-560... 

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