Rd. Culp et al., SYNTHETIC AND STRUCTURAL STUDIES OF GALLIUM-PHOSPHORUS, GALLIUM-ARSENIC, AND INDIUM-PHOSPHORUS COMPOUNDS WITH CHROMOPHORIC SUBSTITUENTS, Inorganic chemistry, 36(23), 1997, pp. 5165-5172
Seven group 13/15 four-membered-ring compounds of the general type [R2
ME-t-Bu-2](2) bearing the chromophoric substituents (R) vinyl, allyl,
and benzyl have been synthesized by treatment of t-Bu2PLi or t-Bu2AsLi
with the appropriate gallium or indium chloride, R2MCl (prepared in s
itu), in Et2O solution: 3 (R = vinyl, M = Ga, E = P); 4 (R = vinyl, M
= In, E = P); 5 (R = allyl, M = In, E = P); 6 (R = allyl, M = Ga, E As
); 7 (R = benzyl, M = In, E P); 8 (R = benzyl, M = Ga, E = As); 10 (R
= vinyl, M = Ga, E = As). The partially substituted derivative [(vinyl
)ClGaAs-t-Bu-2](2) (9) was prepared by a similar one-pot procedure. Al
l eight new compounds were characterized by X-ray crystallography, NMR
, and mass spectroscopy. Compounds 3-8 absorb light at relatively long
wavelengths with cutoffs ranging from similar to 300 nm for the vinyl
-substituted compounds to similar to 330 nm for the corresponding ally
l- and benzyl-substituted derivatives.