Examples of compounds with gallium-boron donor-acceptor bonds, HC[MeC(2,6-(
Pr2C6H3)-C-i)N](2)Ga-->B(C6F5)(3) 3 and (eta (5)-C5Me5)Ga--->B(C6F5)(3) 4 h
ave been prepared by treatment of the free gallanediyls with B(C6F5)(3); th
e structures of both compounds were determined by X-ray crystallography.