Organozinc-selenium compounds

As expected, the behavior of organozinc-selenium compounds is similar to that of the sulfur analogs. Dimeric self-assembled aggregates, 18, were reported for orga-nozinc diselenocarbamates, [RZnSe2CNR 2]2, R = Me, Et, R = Et [35] and R = MeaCCHj, R = Et ]36]. 

A trimeric compound, [Me3SiCH2ZnSe(2,4,6-Bu 3C6H2)]3, 19, contains a twisted six-membered ring and trigonal pyramidal coordination of selenium (differing from the sulfur analog which is planar) [37], 

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Only for a few organozinc compounds, in which in addition to the zinc-carbon bond a zinc-heteroatom bond other than oxygen or nitrogen is present, have structures in the solid state been determined. These structures include those of organozinc compounds in which, in addition to the zinc-carbon bond, a zinc-sulfur, zinc-selenium, zinc-phosphorus or zinc-arsenic bond is present. 

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