A series of supported Fe/Co catalysts with Y zeolite-containing K, Ce or La used as support were synthesized to perform CO2 hydrogenation to linear-alpha olefins (LAOs). Medium acid-base properties and the content of active carbide (Fe5C2) are both affected by the different ion-exchange strategi...

Herein we describe the synthesis of the two enantiomerically pure 3-amino-2-hydroxy-2-methylpropionic acids––(S)- and (R)-α-methyl isoserines––starting from the chiral diols (S)- and (R)-2,3-dihydroxy-N-methoxy-2,N-dimethylpropionamides, respectively, which were obtained by Sharpless asymme...

17β-Hydroxysteroid dehydrogenase type 2 (17β-HSD2) is responsible for the oxidation of the highly active estradiol (E2) and testosterone (T) into the less potent estrone (E1) and Δ4-androstene-3,17-dione (Δ4-AD), respectively. As 17β-HSD2 is present in bones and as estradiol and testosteron...

Layered sulfides, 2H-Li0.7NbS2 (s.g.: P63/mmc) and 3R-NbS2 (s.g: R3m) were synthesized and characterized as electrode materials for a lithium-ion battery. 2H-NbS2 has been known as a poor electrode material for Li+-intercalation. However, both 2H-Li0.7NbS2 and 3R-NbS2 show reversible charge/disc...

3R stands for the concept of reduction, reuse and recycling. How can the 3R concept include the sustainability of educational innovation and entrepreneurship for students at Universiti Kebangsaan Malaysia (UKM)? This paper examines how the components of sustainability and entrepreneurship can pr...

Construction and demolition waste (CDW) accounts for 30% to 40% of the total amount of waste in China. CDW is usually randomly dumped or disposed in landfills and the average recycling rate of CDW in China is only about 5%. Considering there is big challenge in adoption of circular economy in CD...

We performed ab initio calculations based on density functional theory (DFT) in order to explore the influence of van der Waals (vdW) interactions on the structural, energetic, elastic and vibrational properties of graphite and MoS2 (in the 2H, 1T and 3R polytypes). Different vdW functionals wer...

Inverse kinematic (IK) problems based on the product of exponentials (POE) model are often transformed to a series of Paden–Kahan subproblems, which are based on geometric methods with geometric constraints. The focus of subproblem is to solve the 3rd order subproblems, among which the 3R-type ...

Delafossite CuFeO2 oxides were grown inside a hydrothermal reactor using Cu2O and FeOOH as precursors and NaOH as mineralizer. During this work the effect of the NaOH mineralizer and the reaction atmosphere was studied by varying the amount of NaOH used in the hydrothermal synthesis and by chang...

A concise total synthesis of (3R),(5R)-5-hydroxy-de-O-methyllasiodiplodin and its epimer have been synthesized from commercially available (R)-propylene oxide and Orsellinic acid as starting materials. The key steps involved in the synthesis are Wittig reaction, epoxide ring opening with 1,3-dit...

The structural, electronic, vibrational and thermodynamic calculations were performed on one of the transition metal dichalcogenides such as molybdenum disulphide named bulk 2H-MoS2, single layer 2H-MoS2 and 3R-MoS2 systems. The dispersion corrected density functional theory (DFT-D) has been emp...

We present the first calculation of piezoelectric constants of 3R-MoS2 which is one of three known polytypes of MoS2. We demonstrate that the 3R-MoS2 structure with 5 layers has the highest reported piezoelectric constant of all MoS2 multilayer structures. The maximum piezoelectric constant is a...

The orientation of mono(1,10-phenanthroline)copper(II), [Cu(phen)]2+, and the ternary complexes with amino acids, [Cu(phen)Xaa]n+, where Xaa stands for an α-amino acid, has been investigated by electron paramagnetic resonance (EPR) spectra of the complexes on DNA fibers. It has been revealed th...

The amino acids complexes of [Pt(phen)(AA)]NO3·xH2O and [Pd(phen)(AA)]NO3·xH2O have been prepared by the interaction of palladium and platinum complexes, [Pt(phen)Cl2] and [Pd(phen)Cl2] with salts of amino acids in methanol and characterized by 1H NMR and IR spectroscopy which confirmed the fo...

In recent years, considerable effort has been focused in Pd catalyzed cross-coupling reactions, especially the use of less reactive and economically viable substrates like aryl chlorides. Unfortunately, Pd complexes containing the ligands having only N as a donor atom has some limitations, as it...

The interaction of three novel synthesized complexes of [Pd(phen)(R-gly)]NO3, where R-gly is methyl-, propyl-, and amyl-glycine; and phen is 1,10-phenanthroline were synthesized and characterized by spectroscopic methods. The interaction of ct-DNA with different concentrations of these palladium...

Platinum (Pt) and palladium (Pd) have widespread applications, such as in catalysts, jewelry, fuel cells, and electronics because of their favorable physical and chemical properties. Recovery of Pt and Pd from secondary sources is of great concern due to the increased market demand and limitatio...

[PdACl2](n-1)H2O complexes {A: 1,10-phenanthroline (phen), 4-methyl-phenanthroline (4-mphen), 5-methyl-1,10-phenanthroline (5-mphen), 4,7-dimethyl-1,10-phenanthroline (dmphen), 3,4,7,8-tetramethyl-1,10-phenanthroline (tmphen)} were synthesized and characterized by CHN elemental analysis, ATR-FT-...

Publisher SummarySince the metal alkoxidesM(OR), were first comprehensively reviewed in 1960, considerable progress has been maintained and the next major review in 1967 quoted over three hundred references. The most significant advances have involved the chemistry of the transition metal alkoxi...

This review provides a comprehensive overview of the most recent progress in chemistry and applications of metal complexes containing heteroallylic ligands such as amidinates and guanidinates. Clearly, the coordination chemistry of amidinates and guanidinates has reached a state of maturity and ...