The asymmetric unit of the title compound, (C(5)H(6)Br(2)N(3))(2)[SnBr(6)], contains one cation and one half-anion in which the Sn atom is located on a crystallographic centre of inversion and is in a quasi-octa-hedral geometry. The crystal structure is assembled via hydrogen-bonding inter-actions of two kinds, N(pyridine/amine)-H⋯Br-Sn, along with C-Br⋯Br-Sn interactions [3.4925 (19) Å]. The c...

The racemic title compound, C(3)H(5)Br(2)NO, was crystallized from methanol. In the crystal, adjacent mol-ecules are linked through N-H⋯O hydrogen bonds, forming chains along the c-axis direction. These chains are linked through N-H⋯O hydrogen bonds, forming an undulating two-dimensional network lying parallel to the bc plane. There are also short Br⋯Br contacts present [3.514 (3) Å].

The title compound, C5H9BrN4O, was obtained as a minor by-product in the synthesis of 4-di-methyl-amino-1-methyl-1,2,4-triazolin-5-one. Except for the methyl groups of the 4-dimethylamino moiety, all the non-H atoms lie on a crystallographic mirror plane." In the crystal, the mol-ecules are linked by C-Br⋯O=C inter-actions [Br⋯O = 2.877 (2) Å, C-Br⋯O = 174.6 (1)°] into infinite chains in the c-...

The title mol-ecule, C(9)H(5)Br(2)N, is almost planar, with an r.m.s. deviation of 0.027 Å. The dihedral angle between the aromatic rings is 1.5 (3)°. In the crystal, π-π stacking inter-actions are present between the pyridine and benzene rings of adjacent mol-ecules [centroid-centroid distances = 3.634 (4) Å], and short Br⋯Br contacts [3.4443 (13) Å] occur.

The asymmetric unit of the title compound, [Hg(2)Br(4)(C(12)H(12)N(2))(2)], contains one half-mol-ecule. The Hg(II) atom is five-coordinated in a trigonal-bipyramidal configuration by two N atoms from the chelating 4,4'-dimethyl-2,2'-bipyridine ligand, two bridging Br and one terminal Br atom, leading to a centrosymmetric dimeric mol-ecule. There is a π-π contact between the pyridine rings [cen...

Bed rest, a ground-based spaceflight analog, induces robust atrophy of skeletal muscle, an effect that is exacerbated with increasing age. We examined the effect of 14 days of bed rest on skeletal muscle satellite cell content and fiber type atrophy in middle-aged adults, an understudied age demographic with few overt signs of muscle aging that is representative of astronauts who perform long-d...

Using the strategy method (Selten 1967) we elicit subjects' strategies for playing any 2-person 3x3-game with integer payoffs between 0 and 99. In each of 5 tournaments, every strategy pair plays 500000 games. The frequency of pure strategy equilibrium play increases from 51% in the first to 74% in the last tournament, with the equilibria that maximize joint payoff being preferred when multiple...

In the title compound, C(12)H(9)Br(2)N, the dihedral angle between the benzene rings is 47.32 (5)°, whereas the pitch angles, or the angles between the mean plane of each aryl group 'propeller blade' and the plane defined by the aryl bridging C-N-C angle, are 18.1 (2) and 31.7 (2)°. No inter-molecular N-H hydrogen bonding is present in the crystal; however, there is a short inter-molecular Br⋯B...

The Pb(IV) atom of the plumbate dianion in the title compound, (C(7)H(11)N)(2)[Pb(Br(3.75)Cl(0.25))(C(6)H(5))(2)], lies on a centre of inversion in a tetra-gonally compressed octa-hedral geometry. One of the attached Br atoms is disordered with respect to a Cl atom in a 7:1 ratio. The disordered halogen atom is an N-H⋯(Br/Cl) hydrogen-bond acceptor for the cation.