ic3004883_si_001.cif (173.06 kB)
Long Hydrogen-Bonded Rod of Molecular Oxide: A Hexatantalate Tetramer
dataset
posted on 2012-06-04, 00:00 authored by Miki Matsumoto, Yoshiki Ozawa, Atsushi YagasakiA tetra-n-butylammonium (TBA) salt of
[H4.5(Ta6O19)]3.5– was synthesized
by reacting hydrous tantalum oxide with TBAOH. X-ray structural analysis
of TBA3.5[H4.5(Ta6O19)]·2THF·5.5H2O (THF = tetrahydrofuran) revealed that this compound consists
of a hydrogen-bonded, rod-shaped tetramer of hexatantalate that is
almost 30 Å long together with TBA cations and solvent molecules
of crystallization [a = 20.6354(5) Å, b = 25.5951(7) Å, c = 37.2058(8) Å,
α = 77.092(1)°, β = 86.177(1)°, γ = 88.683(1)°, V = 19110.9(8) Å3, Z =
8, and space group P1̅]. 1H NMR
spectra showed that this tetrameric structure is maintained in solution.
