In the structure of the title compound, C(16)H(14)Br(2), the central C=C bond length is 1.329 (4) Å and the two benzene rings are approximately coplanar with the double bond, with twist angles of 7.5 (2) and 13.6 (2)°.

The molecular and electronic structure of edge-sharing bioctahedral [N(n-Bu)4]3[Re2(mnt)5] is reported here. Despite the short intermetal bond length of 2.6654(2) Å with computed bond order of 1.2, the unpaired electron is localised by the asymmetric ligand distribution, as demonstrated by its remarkable EPR spectrum.

Due to the assumption of uniform bond stress, development length fibre reinforced polymer (FRP) bars by design standards can be unnecessarily long and difficult provide in practice. Hence, stress distribution required a glass (GFRP) rebar is investigated. Four beam-bond specimens, two following RILEM specifications based on procedure ACI are tested evaluate effect test method strength. Ten pull...

Abstract In Section 1, we give exact solutions in terms of torsion angle for five canonical conformations of cyclooctane (crown, boat, and chair). These conformations are derived using fixed bond angle, fixed bond length, and methods from distance geometry. In Section 2, we show that the cyclooctane conformation topology observed using torsion angles can also be seen in ring puckering coordinates.

In the title compound, C(30)H(39)OP, the P=O bond length is 1.4866 (12) Å and the P-C bond lengths range from 1.804 (2) to 1.808 (13) Å. The molecle is located on a crystallographic mirror plane. The methyl groups of one tert-butyl group are disordered over two sites in a 0.776 (4):0.224 (4) ratio.

Protein backbone helical structures have the same values of dihedral angles φ and ψ from unit to unit and thus, can be uniquely determined by a pair (φ,ψ). We focus our attention on two types of protein secondary structure αand 310-helices stabilized by 1-5 and 1-4 hydrogen bonding pattern respectively. Even though both αand 310-helices each represent a group of helices, various studies show th...

The first example of 1,2,4,3-triazaborole-based oxoborane has been synthesized via hydrogen migration upon the coordination of AlCl3 to the corresponding borinic acid. X-ray diffraction analysis and computational study disclosed the partial B[double bond, length as m-dash]O double-bond property.

In the title compound, trans-[RhCl{P(C(10)H(7))(3)}(2)(CO)]·3C(3)H(6)O, where P(C(10)H(7))(3) is trinaphthyl-phosphine, the Rh-P bond lengths are 2.3360 (10) and 2.3258 (10) Å, while the Rh-Cl bond length is 2.3525 (11) Å. The coordination around the Rh atom shows a slightly distorted square-planar arrangement.