Remarkable cage deboronation and rearrangement of a closo-1,12-dicarbadodecaborane to form a neutral nido-7,9-dicarbaundecaborane.

Deboronation and cage rearrangement of the closo-1,12-carborane salt [1,12-(PPh2Me)2-1,12-C2B10H10]I2 occurs in refluxing methanol to give the zwitterionic nido-7,9-carborane 7,9-(PPh2Me)2-7,9-C2B9H9. Notably, deboronation and cage substitution of the isomeric closo-1,7-carborane salt [1,7-(PPh2Me)2-1,7-C2B10H10]I2 takes place in methanol to afford the salt [10-OMe-7,9-(PPh2Me)2-7,9-C2B9H9]I

trans-Chloridobis(4-methyl­pyridine-κN)(4,4′,4′′-tri-tert-butyl-2,2′:6′,2′′-terpyridine-κ3 N,N′,N′′)ruthenium(II) hexa­fluoridophosphate acetone monosolvate

The title compound, [RuCl(C6H7N)2(C27H35N3)]PF6·C3H6O, was obtained unintentionally as the product of the reaction of 1,1′-methyl­enebis(4-methyl­pyridinium) hexa­fluoriso­phos­phate and RuCl3(tpy*) (tpy* is 4,4′,4′′-tri-tert-butyl-2,2′:6′,2′′-terpyridine) in the presence of triethyl­amine and LiCl. The mol­ecular structure of the complex displays an octa­hedral geometry around the RuII ion and the unit cell contains an acetone solvent mol­ecule and one orientationally disordered PF6 − anion (occupancy ratio 0.75:0.25) which is hydrogen bonded to two H atoms of the tpy* ligand of the nearest [RuCl(pic)2(tpy*)]+ cation (pic is 4-methyl­pyridine). One of the tert-butyl groups of the tpy* ligand is also disordered over two sets of sites in a 0.75:0.25 ratio

Duloxetine hydro­chloride

The title compound [systematic name: N-methyl-3-(1-naphth­yloxy)-3-(2-thien­yl)propan-1-aminium chloride], C18H20NOS+·Cl−, was crystallized from 1,4-dioxane. Twofold rotational disorder exhibited by the thio­phene ring in a 0.580 (5):0.420 (5) ratio represents two different conformations of the mol­ecule that exist in the same crystal form. The crystal structure contains strong N—H⋯Cl hydrogen bonds

Dihydro­myricetin hexa­acetate

In the title compound, C27H24O14, also known as 2,3-di­acetoxy-5-[(2RS,3RS)-3,5,7-triacetoxy-4-oxochromen-2-yl]phenyl acetate, the heterocyclic ring adopts a distorted half-chair conformation, with two C atoms displaced by 0.1775 (16) and −0.5950 (16) Å from the mean plane of the other four atoms. The dihedral angle between the aromatic rings is 57.81 (8)°. In the crystal, the mol­ecules inter­act by C—H⋯O bonds, aromatic π–π stacking [centroid–centroid separation = 3.6206 (9) Å] and C—H⋯π inter­actions

7α,15α-Dibromo-8,16-diphenyl-6,7,14,15-tetra­hydro-6α,14α-epithio­cyclo­octa­[1,2-b:5,6-b′]diquinoline deuterochloro­form solvate

In the racemic title compound, C34H22Br2N2S·CDCl3, pairs of diquinoline host mol­ecules form centrosymmetric brick-like dimers utilizing three different aryl edge-to-face inter­actions (EF1–3). The dimeric (EF)6 (i.e. 2 × EF1–3) building blocks pack with the deuterochloro­form guest mol­ecules positioned near each of their corners. The Cl atoms of the latter are disordered over two sets of sites in a 0.53 (2):0.47 (2) ratio

2-Bromo-5,7-dimeth­oxy-4-phenyl­quinoline

The title compound, C17H14BrNO2, was synthesized by the treatment of 5,7-dimeth­oxy-4-phenyl­quinolin-2-one with phosphoryl bromide in a Vilsmeier-type reaction. There are two independent mol­ecules (A and B) in the asymmetric unit which differ by 11.2° in the orientation of the 4-phenyl ring with respect to the planar quinoline ring system [dihedral angles = 55.15 (8) and 66.34 (8)° in mol­ecules A and B, respectively]. In the crystal structure, the independent mol­ecules are linked via C—H⋯N and C—H⋯O hydrogen bonds, forming centrosymmetric tetra­meric units which are cross-linked through C—H⋯π and C—Br⋯π inter­actions with Br⋯centroid distances of 3.4289 (8) and 3.5967 (8) Å

(3R,4S,5S,8S,10R,13R)-3-Hy­droxy­kaura-9(11),16-dien-18-oic acid

The title compound, C20H28O3, was isolated during our investigation into the chemical composition and pharmacological activity of Centipeda cunninghamii (DC.) A. Braun & Asch. (Asteraceae). The enanti­opure compound, a diterpene with a carbon skeleton, is composed of three six- and one five-membered rings in chair, twist-boat, half-chair and envelope conformations, respectively. Each mol­ecule makes one intra- and one inter­molecular O—H⋯O hydrogen bond in the crystal lattice, forming hydrogen-bonded chains along [010]. The absolute configuration of the compound was assigned on the basis of optical rotation measurements

Search for gravitational waves associated with the InterPlanetary Network short gamma ray bursts

We outline the scientific motivation behind a search for gravitational waves associated with short gamma ray bursts detected by the InterPlanetary Network (IPN) during LIGO's fifth science run and Virgo's first science run. The IPN localisation of short gamma ray bursts is limited to extended error boxes of different shapes and sizes and a search on these error boxes poses a series of challenges for data analysis. We will discuss these challenges and outline the methods to optimise the search over these error boxes.Comment: Methods paper; Proceedings for Eduardo Amaldi 9 Conference on Gravitational Waves, July 2011, Cardiff, U

Comparação entre diferentes equações antropométricas e a pletismografia para estimar o percentual de gordura de atletas masculinos de Taekwondo

TCC (Graduação) - Universidade Federal de Santa Catarina. Centro de Desportos. Educação Física - Bacharelado.O Taekwondo é um esporte de combate oriundo da Coréia, atualmente integrao quadro de esportes olímpicos, no qual tem suas lutas divididas por categorias de peso, que possui como principal característica os chutes, estes, que são definidos por fatores físicos e que correspondem a 98% dos gestos do combate. Por ser um esporte intermitente, solicita alta preparação física durante a competição, no qual uma luta tem duração aproximada de 8 min, e pelas mudanças ocorridas nos últimos anos, fez com que a antropometria dos atletas fosse um fator decisivo no resultado de uma luta. Pela falta de um protocolo qualificado, específico e válido para avaliar a composição corporal destes atletas, o presente estudo tem como objetivo verificar quais equações antropométricasapresenta maior correlação quando correlacionado com o método de pletismografia por deslocamento de ar para avaliação dopercentual de gordura de atletas masculinos de Taekwondo. Participaram da pesquisa 11 atletas de Taekwondo com idade entre 16 e 30 anos, que foram avaliados por meio de medidas antropométricas de dobras cutâneas, circunferências e perímetros e pelo método de referência pletismografiapor deslocamento de ar. Posteriormente analisou-se a correlação entre a pletismografia por deslocamento de ar e as equações antropométricas.Das nove equações utilizadas seis não apresentaram diferença significativa (p>0,05) com relação à pletismografiapor deslocamento de ar. Dentre estas, três equações apresentaram grande correlação e duas delas apresentaram correlação muito grande com r=914. Devido as características, Whiterset al. (1987) foi considerada a mais adequada para avaliar o %G de atletas masculinos de Taekwondo