Crystal structure and ion mobility in the antimony(III) fluoride complex with glycine 2SbF3·(C2H5NO2)

NMR spectroscopy of amino acid complexes of antimony(iii) and indium(iii) fluorides

“…30 Assuming that the fl uoride sublattice contains six fl uorine atoms (3+3) from the nearest environment of two independent antimony(III) atoms and four fl uorine atoms from the second coordination sphere (1+3), the 19 F NMR spectra of complex 2SbF 3 •Gly at temperatures below 400 K were simulated 7 using two components, p 1 and p 2 , with a relative integrated intensity (RII, in %) ratio of nearly 60 : 40%. However, an analysis of the Sb-F dis-tances from the second coordination sphere (2.555 Å in the Sb(1)F 4 ОЕ polyhedron and from 2.592 to 3.177 Å in the Sb(2)F 4 ОЕ polyhedron, where E is the lone electron pair) 7 suggests that it is more logical and accurate to simulate the NMR spectra of complex 2SbF 3 •Gly using two components, p 1 and p 2 , with a RII ratio of 75 : 25 (Fig. 3).…”

“…Raising the temperature above 440 K is followed by melting of the sample and subsequent formation of X-ray amorphous phase on cooling. 7 The NMR spectra shown in Figs 1 and 2 demonstrate that no ion motions with frequencies higher than 10 4 Hz occur in the proton sublattice ("rigid" lattice) in the temperature range of 150-350 K. "Triangular" shape of the 1 H NMR spectra of complex 2SbF 3 •Gly at 150  T  270 K (Fig. 5) results from superposition of the resonance lines p 1 and p 2 with a RII ratio of 59.8 : 39.9 = 1.49.…”

“…Recently, amino acid complexes of aluminum fl uoride 2 and indium fl uoride 3 have been reported for the fi rst time. Information on the physicochemical properties of antimony(III) fl uoride complexes with AA is scarce [4][5][6][7] in contrast to the data on homoligand complexes of antimony(III) fl uorides with alkali metal, thallium(I), and ammonium cations. At present, there are a few publications on the synthesis, properties, and structure of antimony(III) fl uoride and indium(III) fl uoride complexes with organic cations and neutral molecules 8, 9 and only one communication devoted to an indium(III) complex with AA.…”