Materials Literature
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The salts (Ph(4)E)[M(SOCPh)(3)] (M = Zn, Cd, or Hg; E = P or As) are produced by the reaction of Zn(NO(3))(2).6 H(2)O, Cd(NO(3))(2).4H(2)O or HgCl(2) with Et(3)NH(+)PhCOS(-) and (Ph(4)E)X (E = P, X = Br; E = As, X = Cl) in aqueous MeOH in the ratios M(II):PhCOS(-):Ph(4)E(+) = 1:>/=3:>/=1. The crystal structures of (Ph…
The complex strain-optical ratio, O *(ω), and the complex Young's modulus, E *(ω), of four vinyl polymers, atactic polypropylene, 1,2-polybutadiene, poly(ethylethylene), and poly(4-vinylbiphenyl), were measured from the rubbery plateau to the glassy zone to investigate the origin of the birefringence and the chain ori…
Linear viscoelastic and dielectric relaxation behavior was examined for blends of styrene−isoprene (SI) diblock copolymers in a nonentangling homopolyisoprene (hI) matrix. The copolymers formed spherical micelles with S cores and I corona. The I blocks had type-A dipoles, and their global motion induced dielectric rel…
We have prepared colloidal suspensions of 600 Å diameter latex polyballs in a lyotropic liquid crystal. The phase diagrams of the mixtures have been determined for a few values of the surfactant to water ratio. In the nematic phase, the particles remain suspended at high temperatures but undergo a gas−liquid transitio…
Binuclear copper(II) complexes of composition [Cu 2 (OH/OMe)(O 2 CPh) 2 (tmen) 2 ](PF 6 ) ( 1 ) are prepared by reacting copper(II) benzoate with N, N, N ‘, N ‘-tetramethylethane-1,2-diamine (tmen) in methanol followed by an addition of NH 4 PF 6 . The crystalline product 1 is a 1:1 mixture of two complexes viz . [Cu…
An advanced theoretical model for the structure of the interface between two immiscible homopolymers is presented. The theory is based on a combination of the Flory−Huggins model and the square-gradient approach. We first analyze the effect of molecular weights of the components on the interfacial tension in the limit…
The open cluster complex [Pt6(μ-CO)6(μ-dppp)2(dppp)2], 1, dppp = Ph2P(CH2)3PPh2, can encapsulate mercury(0) or thallium(I) with loss of dppp to give the cryptate cluster [Pt6(μ6-M)(μ-CO)6(μ-dppp)3]n+, 2 (M = Hg, n = 0) or 3 (M = Tl, n = 1), respectively.
The alloys Mg–6Si and Mg–4Si–4Zn (wt-%) were extruded at 573 K and the mechanical properties investigated by tensile testing at strain rates from 2 × 10−5 to 2 × 10−2s−1 and at temperatures in the range 673–773 K. The Mg–Si alloy behaved as M type at any given strain rate. The Mg–Si–Zn alloy behaved as A type at strai…
A novel framework comprised of [Ge4S10]4– adamantine clusters linked by Ag+ is synthesized hydrothermally and its structure determined utilizing data collected on a 36 pl (36 × 10–12 l) single crystal using an X-ray synchrotron/imaging plate combination.
Dielectric measurements of a polymerizing amine/epoxy system were carried out in the frequency interval ${10}^{3}$--${10}^{10}$ Hz. The vitrification of the system due to the increase of connectivity was analyzed by measuring the change of the shape parameters of the main relaxation, m and n, during the reaction; the…
The lattice cluster theory (LCT) is used to study the influence of structural and energetic asymmetries on the miscibilities of binary polyolefin blends. The theory describes monomer molecular structures by using a united atom model for the polyolefins, where each CH n united atom group occupies a single lattice site…
Polymethylhydrosiloxanes (PMHSs) crosslinked with hexa-l,5-diene or hexane-l,6-diol have been considered as potential precursors for Si–C–O systems. Their pyrolysis under an argon flow has been investigated mainly by 29Si MAS NMR spectroscopy. The two systems, with similar C/Si but different O/Si ratios, show differen…
Some new synthetized pyrazole organic-type compounds have been tested as inhibitors for the corrosion of iron in 1M HCl by weight-loss and electrochemical polarization methods. Both techniques gave the same order of inhibition. The compound l,3-bis(3' chloromethyl-5'-methyl-1'-pyrazolyl)propane (Inh.9) was the better…
A new synthetic route to metallo-1,2-enedithiolates is presented. The addition of 1 equiv of the α-bromo ketones Ar-C(O)CHXR (X = Br) {Ar = 2-quinoxaline, 2-, 3-, or 4-pyridine, Ph, Cl−Ph, and pyrene (R = H); Ar = 2-quinoxaline (R = Me); and Ar = R = Ph} to Cp 2 Mo(SH) 2 followed by the addition of base results in the…
CeO2–ZrO2 aerogels (prepared by supercritical drying of the precursor hydrogels produced by either co-precipitation or deposition-precipitation) have been characterised in order to elucidate the effect of the structural homogeneity on the stability of their total surface areas at high temperatures. Co-precipitated aer…
The synthesis and detailed structural characterization of phthalocyanine derivatives substituted by six dodecyloxy side chains and a single poly(oxyethylene) moiety are described. All of the materials possess columnar mesogenic properties. The phthalocyanines attached to short poly(oxyethylene)s possess an ordered hex…
6,6′-Diamino-2,2′-bipyridine (1a) has been found to exhibit a strong fluorescence in the near-UV region. Some amino and/or chloro substituted bipyridines (bpys) have been synthesized and studied to show that only 6-amino-substituted derivatives exhibited a strong emission. The emission of 6-amino-6′-chloro-bpy (3a) wa…
A combined experimental and theoretical study was carried out to analyze the effect of residual thermal stresses on the interfacial bonding in particulate metal-ceramic matrix composites, in particular, ductile phase toughened ceramics. The metal-ceramic microstructure studied is a two phase NiAl2O3 system produced by…
The crystal structures of four [dicyanoargentato(I)]cadmium(II) complexes with the mixed ligation of imidazole (imH: C 3 H 4 N 2 ) or N -methyl- or 2-methylimidazole ( N -Meim or 2-MeimH: C 3 H 6 N 2 ) on the cadmium(II), [Cd(imH) 4 {Ag(CN) 2 } 2 ] ( 1a ), [Cd(imH) 5 {Ag(CN) 2 }][Ag(CN) 2 ] ( 1b ), [Cd( N -Meim) 4 {Ag…
This Handbook/Databook contains hundreds of completely updated figures and tables. The authors are among the most prominent in the field - and each is a specialist in the subject matter of his peer reviewed contribution.