Complex fluoroberyllates. Synthesis and physicochemical characterization of mixed-fluoro complexes of beryllium Containing hydrogenoxalate (HC<SUB>2</SUB>O<SUB>4</SUB><SUP>-</SUP>), glycinate, and dihydrogenphosphate (H<SUB>2</SUB>PO<SUB>4</SUB><SUP>-</SUP>) as co-ligands

Synthesis of novel mixed complex fluoroberyllates of the types M2[BeF3(HC2O4)].H2O (M = NH4 or Na), K2[BeF3(HC2O4)], M2[BeF3(NH2CH2COO)].H2O (M = NH4 or Na), and M2[BeF2(H2PO4)2] (M = NH4 or K) has been achieved from the reaction of Be(OH)2 with MF and the corresponding co-ligands viz., oxalic acid, glycine, and orthophosphoric acid, at pH ca. 2. Vibrational spectroscopic evidences have been provided in respect of co-ordinated F- and the ligands HC2O4-, NH2CH2COO-, or H2PO4-. IR spectra of ammonium salt of the complexes demonstrate the presence of hydrogen bonding