Scott Blair Fractional-Type Viscoelastic Behavior of Thermoplastic Polyurethane.

In this paper, the experimental characterization of the viscoelastic properties of thermoplastic polyurethane (TPU) samples through creep experiments is presented. Experiments were conducted at different constant temperature levels (15, 25, and 35 ∘C), for three different tensile stress levels (0.3, 0.

Crystal structures of [IrCl(NHCHPh)((dppm)(C(Ndppm))-κ ,,')]Cl·5.5MeCN and [IrI(NHCHPh)(((dppm)C(N))-κ ,)(dppm-κ ,')]I(I)·0.5I·MeOH·0.5CHCl: triazene fragmentation in a PCN pincer iridium complex.

The structure of [IrCl(CHNP)]Cl·5.5CHCN or [IrCl(NHCHPh)(((dppm)C(Ndppm))κ )]Cl·5.5CHCN [, dppm = bis-(di-phenyl-phos-phino)methane; systematic name: di-chlorido(1,1,3,3,7,7,9,9-octa-phenyl-4,5-di-aza-1,3λ,7λ,9-tetra-phosphanona-3,5-dien-6-yl-κ , )-(phenyl-methanimine-κ)iridium(III) chloride aceto-nitrile hemihendeca-solvate], resulting from an oxygen-mediated cleavage of a triazeneyl-idene-phospho-rane ligand producing a diazo-methyl-ene-phospho-rane and a nitrene moiety, which in turn rearrange a Staudinger reaction and a 1,2-hydride shift to the first title complex, involves a six-coordinate Ir complex cation coordinated by a PCP pincer ligand, a benzaldimine and two chlorido ligands.

The Hydrogen Bonded Structures of Two 5-Bromobarbituric Acids and Analysis of Unequal C5-X and C5-X' Bond Lengths (X = X' = F, Cl, Br or Me) in 5,5-Disubstituted Barbituric Acids.

The crystal structure of the methanol hemisolvate of 5,5-dibromobarbituric acid () displays an H-bonded layer structure which is based on N-H⋯O=C, N-H⋯O(MeOH) and (MeOH)O-H⋯O interactions. The barbiturate molecules form an H-bonded substructure which has the topology. 5,5'-Methanediylbis(5-bromobarbituric acid) , obtained from a solution of 5,5-dibromobarbituric acid in nitromethane, displays a N-H⋯O=C bonded framework of the type.