The organogallium compound, Me2Ga(CsHs) has been observed to react at room temperature or below with primary and secondary amines and phosphines to form[Me2GaPPh2]2 and cyclopentadiene. All new compounds have been fully characterized by their melting points, partial elemental analyses (C and H), 1HNMR, 3IPNMR (as appropriate), and IR spectroscopic data, and cryoscopic molecular weight studies. The compound [Me2-GaP(Me)(Ph)J3 crystallizes in the trigonal space group R3 with a = 16.526(5) A, c = 10.242(2) A,V = 2421(1) A3, and Z = 3 (trimeric molecules). The molecule contains a GasP3ringin the chair conformation with phenyl groups in axial positions. The Ga-P distances range from 2.407-(4) to 2.413(6) A.Compounds of the type R2MEIV2 ( = group 13 element, E = group 15 element) are being investigated as single-source precursors for the preparation of group 13-15 materials.2 The best precursors should be volatile liquids which can be prepared in very high purity. The typical synthetic routes to these types of compounds are either hydrocarbon elimination reactions or metathesis reactions. The major source of impurities in precursors prepared by elimination reactions originates with the high temperatures needed to initiate the elimination reaction between the pure starting materials, the organo group 13 compound, and the group 15 compound. elimination mr3 + HER'2 -R2MER'2 + RH reaction Typically, elimination reactions in gallium-nitrogen systems3-5 require 100-130 °C whereas gallium-phosphorus compounds4,5 need 110-150 °C. For example, the compounds [Me2GaNH2l3,3 [Me2GaN(H)(Me)]3,3 ß2-GaNMe2,3 [Me2GaN(H)(t-Bu)]2,4 and (Me2GaNPh2)25 were prepared from the neat reagents, GaMes, and the corresponding amine, at 90, 125, 125, 110, and 120 °C, respectively, whereas (Me2GaNHPh)2,6 [Me2GaN (H) Ad] 26 (Ad = 1-adamantyl), [Me2GaN(H)Dipp]26 (Dipp = 2,6--Pr2C6H3) were formed from GaMea and the corresponding amine in refluxing toluene (bp 110 °C). The gallium-(1) (a) State University of New York at Buffalo, (b) University of Delaware.
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.
hi@scite.ai
10624 S. Eastern Ave., Ste. A-614
Henderson, NV 89052, USA
Copyright © 2024 scite LLC. All rights reserved.
Made with 💙 for researchers
Part of the Research Solutions Family.