Aluminum(III) and Gallium(III) Complexes with Methyliminodiacetic Acid: Crystal Structures of Cat[M(Mida)2] (Cat+ = Na, K, NH4; M3+ = Al, Ga) and Me4N[Ga(Mida)2] • H2O

The bis chelate complexes Cat[M(Mida)(2)] and Me4N[Ga(Mida)(2)] center dot H2O are synthesized from aqueous solutions M(NO3)-2H(2)Mida-CatOH (M3+ = Al, Ga; Cat(+) = Na, K, NH4) and Ga(OH)(3)-2H(2)Mida-Me4NOH. The crystal structures of the isostructural compounds Cat[M(Mida)(2)] (Cat = Na, M = Al; Cat = K, M = Al; Cat = Na, M = Ga) and Me4N[Ga(Mida)(2) center dot H2O are determined by X-ray structure analysis, According to the X-ray powder diffraction analysis, all six compounds Cat[M(Mida)(2)] (Cat = Na, K, NH4; M = Al, Ga) are isostructural. The octahedral anion in Cat[M(Mida)(2)] and Me4N[Ga(Mida)(2)] center dot H2O exhibits a trans(N)-fac configuration.