[R-C7H16N2][V2Te2O10] and [S-C7H16N2][V2Te2O10]; new polar templated vanadium tellurite enantiomers

New polar vanadium tellurite enantiomers have been synthesized under mild hydrothermal conditions through the use of sodium metavanadate, sodium tellurite and enantiomerically pure sources of either R-3-aminioquinuclidine or S-3-aminioquinuclidine. R-C₇H₁₆N₂]V₂Te₂O₁₀] and S-C₇H₁₆N₂]V₂Te₂O₁₀] contain V₂Te₂O₁₀]_n²ⁿ⁻ layers constructed from (VO₂)₂O(TeO₄)₂] monomers. Steric effects associated with the hydrogen-bonding network between the V₂Te₂O₁₀]_n²ⁿ⁻ layers and C₇H₁₆N₂]²⁺ result in polar structures and crystallization in the space group P2₁ (no. 4). Electron localization functions were calculated to visualize the tellurite stereoactive lone pairs. Both iterative and non-iterative Hirshfeld techniques were evaluated as means to determine atomic partial charges, with iterative Hirshfeld charges more accurately representing charge distributions in the reported enantiomers. These charges were used to calculate both component and net dipole moments. R-C₇H₁₆N₂]V₂Te₂O₁₀] and S-C₇H₁₆N₂]V₂Te₂O₁₀] exhibit dipole moments of 17.37 and 16.62D, respectively. R-C₇H₁₆N₂]V₂Te₂O₁₀] and S-C₇H₁₆N₂]V₂Te₂O₁₀] both display type 1 phase-matching capabilities and exhibit second harmonic generation activities of ∼50×α-SiO₂.