Microcalorimetic measurements at 520–550 K of the heats of thermal decomposition of Fe2Ru(CO)12, FeRu2(CO)12 and Ru3(CO)12 lead to values of the standard enthalphy of formation (ΔHof, c/kJ mol-1) as follows: Fe2Ru(CO)12  (1820 ± 14); FeRu2(CO)12  (1891 ± 16); Ru3(CO)12  (1903 ± 18). E...

Thermocatalytic upgrading of heavy crude oil at reservoir temperature and pressure has been studied. The objective of the present work was to investigate the efficiency of the compounds based on iron (iron carbonyls, iron oxide, metallic iron) on thermocatalytic upgrading process of heavy crude ...

Conjugated linoleic acid (CLA) is known to have several beneficial biological effects in animal models, including anticarcinogenic and antiatherosclerotic effects, antiobesity, and antioxidant activity. However, reports of its antioxidant activities have been inconsistent. In this study, we inve...

Thin, air-stable, nanogranular iron-based films of 10 ± 1.2, 100 ± 14 and 400 ± 46 nm thicknesses were prepared by Chemical Vapor Deposition (CVD) of triiron dodecacarbonyl, Fe3(CO)12, onto silicon wafers at 150 °C in an inert environment at a standard pressure of 100 kPa. These thin nanogra...

In contrast to previous discussion of the structure of iron dodecacarbonyl, it is shown by means of molecular-orbital theory that the structure analogous to that of iron enneacarbonyl is diamagnetic and hence in accord with observation.

Tunable (Pb0.5Ba0.5)(Zr1−xTix)O3 (PBZT) films were grown on Pt/Ti/SiO2/Si substrates using chemical solution deposition method. PBZT films contained bimodal distribution of grains and pores. The size of large grains, the amount of small grains, and the porosity all increased with the content of ...

This paper describes the fabrication of barium strontium titanate (Ba0.6Sr0.4TiO3 or BST) nanofibers by electrospinning method using a solution that contained poly(vinylpyrrolidone) and a sol–gel solution of BST. The as-spun and calcined BST/PVP composite nanofibers were characterized by TG-DTA...

The present Letter reports electrical and optical properties of our newly synthesized organic-titanium hybrid polymer, (2,3-dicyanophenyl bis-2,4-pentanedionate titanium alkoxide) (PDC–PD–Ti). The main chains of PDC–PD–Ti consist of alternate titanium ions and phenylene groups by way of oxyg...

The thermal properties of Ba(hfa)2, Ba(hfa)2(tetraglyme), Ba(hfa)2(18-crown-6), and Ba(hfa)2(diaza-18-crown-6) are investigated by comparing the results of thermogravimetric analysis (TGA) for these materials. All TGA measurements were made in helium at atmospheric pressure. Infrared, MS, NMR, a...

The enantiomers of mandelic acid have each been converted into 1,3-dioxolan-4-one derivatives. Formation of the planar chiral (η6-arene)tricarbonylchromium complexes has enabled an investigation of their potential to promote discrimination between the diastereotopic ortho and/or meta arene hydr...

SummaryThe molecular structure of π-(tricarbonylchromium)toluene, CrC10H8O3, has been determined from three-dimensional X-ray data. The orthorhombic unit-cell, P212121 with a = 11.109(4), b = 7.231(3) and c = 12.206(4)Å, contains four molecules. Refinement converged to a final weighted R-index ...

The low temperature i.r. spectrum of ferrocene has many features not consistent with the room temperature structure. Some changes in the vibrational assignment are made. The e1u ring-metal-ring deformation is observed at 179 cm−1 and the spectroscopic entropy is corrected accordingly.

The librational modes of ferrocene-h10 and -d10 have been observed near 62 cm−1 (-h10) and 40, 52 and 60 cm−1 (-d10). The polarization measurements at low temperatures can give no useful information concerning the vibrational assignment until the low temperature crystal structure is completely d...

The laser Raman spectra of ferrocene-d10 have been measured in the polyorystaUine and solution states. The interpreted spectra support the recent assignment for ferrocene [4].

The high-temperature (HT) phase of Fe(C5D5)2 is easily undercooled to exhibit a λ-type phase transition at 164.1 K in the metastable state. The stable low-temperature (LT) phase is obtained by annealing the undercooled HT phase around 190 K. A first-order phase transition characterized by a sup...

In the rhodium/alkylphosphine complex catalyzed hydrogenation of carbon monoxide, the reaction rate and the selectivity to ethylene glycol have been found to be much improved by the addition of nitrogen bases. Examination of the effects of a variety of nitrogen bases for Rh/P-i-Pr3 and Rh/P-n-Bu...

Allyltrimethylsilane is catalytically isomerized to propenyltrimethylsilane when heated with diethylene(η5-indenyl)rhodium(I). Diallyldimethylsilane reacts stoichiometrically to form [(η2-CH2CHCH2)(η2-CH3CHCH)SiMe2 (η5-indenyl)rhodium(I)] (1) in 74% yield. 1H and 13C NMR data are reporte...

Two types of square-planar rhodium(I) isocyanide complexes, Rh(acac)(RNC)2 (acac = CH3COCHC OCH3−; R = t-Bu, p-CH3OC6H4, p-CH3C6H4, p-ClC6H4, 2,4,6-(CH3)3C6H2) and Rh(acac)(R′ NC) (PPh3) (R′ = p-CH3OC6H4, p-CH3C6H4, p-ClC6H4), have been synthesized. They react with tetracyanoethylene (TCNE) to...

Complexes of the type, [(acac)Rh(ViSiR3)2] and [(acac)Rh(Vi2SiR2)], are readily prepared by displacement of ethylene from [(acac)Rh(C2H4)2]. The compounds, which are less reactive to air than similar carbon analogues, have been characterized by 1H and 13C NMR. The 13C NMR results suggest that th...

An extended X-ray absorption fine structure (EXAFS) study is presented of the complexes (η6-C6H6−nMen)Cr(CO)3, where n = 0–6, to determine the molecular structures and explore the variation in electron charge density on chromium with sequential arene methylation. Structural parameters for the ...