Gallium trihydride

In recent years the coordination of N-, P-, or O-donor Lewis bases to aluminum and gallium trihydrides has been studied extensively (27). Interest in these complexes stems in part from their applications in a wide variety of areas, for example chemical vapor deposition technology (28) and organic synthesis (29). However, the corresponding carbene complexes of the heavier group 13 trihydrides have only been... 

TERTIARY AMINE AND PHOSPHINE ADDUCTS OF GALLIUM TRIHYDRIDE... 

Donor adducts of aluminum and gallium trihydride were the subject of considerable interest in the late 1960s and early 1970s.1 Thin-film deposition and microelectronic device fabrication has been the driving force for the recent resurgence of synthetic and theoretical interest in these adducts of alane and gallane.24 This is directly attributable to their utility as low-temperature, relatively stable precursors for both conventional and laser-assisted CVD,59 and has resulted in the commercial availability of at least one adduct of alane. The absence of direct metal-carbon bonds in adducts of metal hydrides can minimize the formation of deleterious carbonaceous material during applications of CVD techniques, in contrast to some metal alkyl species.10, 11... 

In this section we present the synthesis of adducts of some gallium trihydride (gallane) compounds which are remarkably thermally stable.2 12 13... 

GaH3 GaH3, gallium trihydride [GaH3], gallane (parent hydride name), trihydridogallium ... 

The experiments described in the preceding sections leave little room for doubt that the base-free trihydride of gallium has at last been run to earth. It can be prepared in amounts up to 500 mg. While decomposing to the elements at ambient temperatures, gallane vaporizes at low... 

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