The most reactive chemical element, F(2), has been claimed not to occur in nature. First direct evidence from in situ NMR spectroscopy now proves that elemental F(2) indeed occurs in nature as an occlusion in "antozonite" (right in the picture), a variant of fluorite (CaF(2), left).

A new synthesis route for phosphates in an organic solvent at low temperatures is presented. The synthesis was done by dispersing a nitrate salt and phosphorus pentoxide in dimethyl sulfoxide. The synthesis can be performed under water-free conditions and yielded several organic and inorganic phosphates. Crystal structure solution of bistetramethylammonium hydrogencyclotriphosphate, [N(CH3)4]2HP3O9, was achieved by combining information gained from powder X-ray diffraction, liquid NMR and solid state (2D) NMR. The molecular structure of rubidium cyclotetraphosphate, Rb4P4O12, was determined using liquid state NMR and solid state (2D) NMR spectroscopy.

Comment tert-Butylglycolic acid was prepared as a chelating molecule bearing the sterically demanding tert-butyl group as a substituent. In order to estimate the influence of chelation on structural parameters of the chelating molecule, the structure of the parent compound was investigated.

Abstract. Crystalline α-bistetramethylammonium hydrogencyclotriphosphate [N(CH 3 ) 4 ] 2 HP 3 O 9 (Pcab), which were synthesized via a low-temperature route (Ͻ60°C) shows an irreversible first-order phase transition to β-[N(CH 3 ) 4 ] 2 HP 3 O 9 (P2 1 2 1 2 1 ), which was investigated by differential scanning calorimetry, X-ray powder diffraction, and solid state nuclear magnetic resonance spectroscopy. The crystal structure