The uninegative dimethylbis(pyrazol-1-yl)- and bis(3,5-dimethylpyrazol-1-yl)dimethyl-gallate ions have been isolated as their sodium and tetra-alkylammonium salts. The anions act as bidentate chelating agents towards transition-metal ions. The orange air-stable nickel complex [Ni{Me₂Ga(pz)₂}₂](pz = pyrazolyl) has a square-planar arrangement of four nitrogens about the nickel atom, while the purple oxygen-sensitive cobalt complex [Co{Me₂Ga(pz)₂}₂] exhibits the transition metal in a tetrahedral environment. Steric requirements of the two ligands are emphasised in the two copper complexes [Cu{Me₂Ga(pz)₂}₂] and [Cu{Me₂Ga(dmpz)₂}₂](dmpz = 3,5-dimethylpyrazolyl) which, respectively, display the copper atoms in square-planar and pseudo-tetrahedral environments. The [Me₂B(pz)₂]^– ligand has been synthesized and utilized to prepare nickel(II), copper(II), and zinc(II) complexes for comparative purposes. Representative pyrazolyl-aluminate and -indate ligands have also been synthesized, but attempts to complex these with transition-metal ions have so far proved unsuccessful.