Zirconium iodide structure

Geometric structure and molecular parameter data were used by [97VIS/COR] to determine the heat capacity and entropy of the gaseous zirconium iodides at... 

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 ... 

Zirconium, tetrakis(acetylacetonate)-stereochemistry, 32 Zirconium, tetrakis(acetylacetone)-stercochemistry, 94 Zirconium, tris(phcnylenedithio)-structure, 63 Zirconium chloride (ZrCl) structure, 27 2.r6Cli2 structure, 27 Zirconium iodide Zr6li2... 

Klemn also reported that zirconium tetrabromide possessed a structure similar to the iodide but with tetragonal distortion. Berdonosov and co-workers (58), apparently unaware of Klemn s report, write that zirconium tetrabromide has a primitive cubic lattice with a= 10.95 0.01 A, and assigned the space group T, by analogy with zirconinm tetrachloride. Zirconium and hafnium tetrabromides seem to be structurally different than titanium tetrabromide. It is observed that titanium tetrabromide is soluble to the extent of 40% in chloroform and 30% in ethylene dichloride and carbon tetrachloride, whereas zirconium and hafnium tetrabromides are soluble to the extent of only 4% in chloroform and 0% in carbon tetrachloride (57). 

---