CsVO(O)CO: an exceptionally thermostable carbonatoperoxovanadate with an extremely large second-harmonic generation response.

A novel nonlinear optical (NLO) carbonatoperoxovanadate, CsVO(O)CO, with an exceptionally high thermostability was successfully synthesized by introducing highly polarizable Cs cations and inorganic polydentate carbonate anions into asymmetric peroxovanadates. The structure of CsVO(O)CO is composed of distorted [VO(O)CO] units and charge balancing Cs cations. The title compound exhibits the largest NLO intensity ever found in the current carbonate NLO materials, e.

Rb VO(O ) CO : A Four-in-One Carbonatoperoxovanadate Exhibiting an Extremely Strong Second-Harmonic Generation Response.

A nonlinear optical (NLO) carbonatoperoxovanadate, Rb VO(O ) CO , was synthesized through a simple solution-evaporation method in phase-pure form. Single-crystal X-ray diffraction revealed that the structure of Rb VO(O ) CO consists of important noncentrosymmetric (NCS) chromophores, that is, π-delocalized (CO ) groups, a second-order Jahn-Teller (SOJT) distortive V cation, and π-localized distorted O groups, as well as charge-balancing polarizable Rb ions. The powder second-harmonic generation (SHG) measurements indicated that Rb VO(O ) CO is phase-matchable (Type I) and exhibits a remarkably strong SHG response circa 21.

From a Metastable Layer to a Stable Ring: A Kinetic Study for Transformation Reactions of Li Mo TeO to Polyoxometalates.

A metastable tellurite, Li Mo TeO , revealing a corrugated layered structure in an extremely strained coordination environment was hydrothermally synthesized in high yield. Li Mo TeO undergoes Li -exchange-driven facile structural transformation reactions to polyoxometalates. The kinetic data for the transformation reactions at various conditions were successfully obtained by simple lab-source powder X-ray diffraction.

Effect of MultiSubstitution on the Thermoelectric Performance of the CaYbSbGe (0 ≤ x ≤ 9; 0 ≤ y ≤ 3; 0 ≤ z ≤ 3) System: Experimental and Theoretical Studies.

The Zintl phase solid-solution CaYbSbGe (0 ≤ x ≤ 9; 0 ≤ y ≤ 3; 0 ≤ z ≤ 3) system with the cationic/anionic multisubstitution has been synthesized by molten Sn metal flux and arc-melting methods. The crystal structure of the nine title compounds were characterized by both powder and single-crystal X-ray diffractions and adopted the HoGe-type structure with the tetragonal space group I4/mmm (Z = 4, Pearson Code tI84). The overall isotypic structure of the nine title compounds can be illustrated as an assembly of three different types of cationic polyhedra sharing faces with their neighboring polyhedra and the three-dimensional cage-shaped anionic frameworks consisting of the dumbbell-shaped Sb units and the square-shaped Sb or (Sb/Ge) units.