Ultra-high-pressure (UHP) eclogites and ultramafites associated fluid inclusions from the Western Gneiss Region, Norwegian Caledonides, have been analysed for F, Cl, Br I using electron-probe micro-analysis, time-of-flight secondary ion mass spectrometry neutron-irradiated noble gas spectrometry. Textures of multi-phase in cores silicate grains indicate formation during growth host crystal at U...

Successive [2+4] cycloadditions of arynes and isobenzofurans by site-selective halogen-lithium exchange of 1,2-dihaloarenes were developed, allowing the rapid construction of polycyclic compounds which serve as a useful synthetic intermediates for the preparation of various polyacene derivatives.

In the title compound, C(16)H(12)BrFO(2)S, the 4-fluoro-phenyl ring is rotated out of the benzofuran plane, as indicated by the dihedral angle of 5.94 (5)°. The crystal structure exhibits aromatic π-π inter-actions between the benzene ring and the 4-fluoro-phenyl ring of an adjacent mol-ecule [centroid-centroid distance = 3.632 (2) Å], and a Br⋯O halogen bond with a Br⋯O distance of 3.101 (1) Å.

Thermal HCl and HBr molecules were photodissociated using circularly polarized 193 nm light, and the speed-dependent spin polarization of the H-atom photofragments was measured using polarized fluorescence at 121.6 nm. Both polarization components, described by the a(0)(1)(perpendicular) and Re[a(1)(1)(parallel, perpendicular)] parameters which arise from incoherent and coherent dissociation me...