A new type of Indium(III) fluoride complex containing In(III) atoms in both anion and cation: Crystal structure and vibrational spectra.

• A new type of indium(III) fluoride complex with In(III) atoms in the anion and cation was obtained. • The synthesized complex was studied by X-ray crystal diffraction and vibrational spectroscopy. • The first fluoride complex of indium(III) with an trivalent cation was obtained. A new type of fluoride complex of indium(III) [N(CH 3) 4 6 [In(H 2 O) 6 [InF 6 3 ·18H 2 O (1) containing In(III) atoms in the hexafluoride complex anion and the hexaaquacomplex cation has been synthesized and structurally studied. The structure of [N(CH 3) 4 6 [In(H 2 O) 6 [InF 6 3 ·18H 2 O is formed by isolated octahedral complex [In(1)F 6 3– and [In(2)F 6 3– anions, octahedral complex [In(3)(H 2 O) 6 3+ cations, [N(CH 3) 4 + cations, and crystallization H 2 O molecules. A formation in the structure of 1 of a rather strong O H···F hydrogen bond between the coordinated H 2 O molecules of the cation and F atoms of the complex anion with O···F distances of 2.472(1) Å has been established. The synthesized and structurally studied compound 1 is the obtained for the first time indium(III) fluoride complex containing a hexaaquacomplex [In(3)(H 2 O) 6 3+ cation having the configuration of a practically ideal octahedron. The vibrational spectra of the synthesized compound have been discussed with taking into account the results of crystal structure studies. [ABSTRACT FROM AUTHOR]