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Bis(1‐camphenyl) zink wurde aus Zinkchlorid und 1‐Camphenyllithium synthetisiert. Die Verbindung bildet mit 2,2′‐Dipyridyl und 1,10‐Phenanthrolin Komplexe der Typen (1‐Camphe)2Zn2 · L und [(1‐Camphe)2Zn]2 · L (L = dipy, phen). Die erhaltenen Verbindungen wurden durch Elementaranalysen, ihre IR‐, UV‐VIS‐, 1H‐NMR‐ und Massenspektren sowie durch polarographische Untersuchungen näher charakterisiert.

Benzyl Titanium and Zirconium Alumina Catalysts for Partial Hydrogenation of Acetylene Benzyl titanium and zirconium compounds of the types Bzl4M, C5H5MBzl3, and (C5H5)2MBzl2 form surface compounds on dehydroxylated alumina (15% α‐, and 85% δ‐Al2O3) which on hydrogenolysis yield TiH‐ and ZrH‐species. The supported systems were studied with respect to catalytic activity in the partial hydrogenation of acetylene. Supported (C5H5)2TiBzl2 was proved to be inactive and the systems C5H5TiBzl3(Al2O3) and Bzl4/Al2O3 catalyze the formation of polyacetylene, but catalysts containing benzyl zirconium species are suitable for the partial hydrogenation of acetylene. Acitivity and selectivity of the system C5H5ZrBzl3/Al2O3 are comparable to industrial used Pd/Al2O3 catalysts.

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