نتایج جستجو برای: acetylacetonate complexes

تعداد نتایج: 137440  

Journal: :The journal of physical chemistry. B 2010
Gonghu Li Eduardo M Sproviero William R McNamara Robert C Snoeberger Robert H Crabtree Gary W Brudvig Victor S Batista

Several polynuclear transition-metal complexes, including our own dinuclear di-μ-oxo manganese compound [H(2)O(terpy)Mn(III)(μ-O)(2)Mn(IV)(terpy)H(2)O](NO(3))(3) (1, terpy = 2,2':6',2''-terpyridine), have been reported to be homogeneous catalysts for water oxidation. This paper reports the covalent attachment of 1 onto nanoparticulate TiO(2) surfaces using a robust chromophoric linker L. L, a p...

Journal: :Chemical communications 2011
Samiran Bhattacharjee Da-Ae Yang Wha-Seung Ahn

A manganese(II) acetylacetonate complex has been immobilized to the metal-organic framework IRMOF-3 through a one-step post-synthetic route for the first time, providing an effective and recyclable heterogeneous catalyst for epoxidation of alkenes.

Journal: :The journal of physical chemistry. B 2004
Chao Liu Xiaowei Wu Timothy Klemmer Nisha Shukla Xiaomin Yang Dieter Weller Anup G Roy Mihaela Tanase David Laughlin

Monodispersed FePt nanoparticles are synthesized by reduction of iron(II) acetylacetonate and platinum(II) acetylacetonate with 1,2-hexadecanediol as the reducing reagent in the polyol process. As-prepared FePt nanoparticles are chemically disordered with fcc phase. Transmission electron microscopy (TEM) images show a self-assembled particle array with an average particle size of 3 nm and a sta...

2005
Chao Liu Xiaowei Wu Timothy Klemmer Nisha Shukla Dieter Weller PennsylVania Anup G. Roy Mihaela Tanase David Laughlin

FePt/iron oxide core/shell nanoparticles are synthesized by a two step polyol process with 1,2hexadecanediol as the reducing reagent. Monodispersed 2.6-nm FePt nanoparticles are first obtained by reduction of iron(III) acetylacetonate and platinum(II) acetylacetonate. These preformed FePt nanoparticles are then used as seeds and an iron oxide shell is formed in the second synthesis step. The ro...

2006
Terufumi FUJIWARA Theingi Kyaw Yasuaki OKAMOTO Takahiro KUMAMARU

Upon mixing of oxovanadium(IV) acetylacetonate, this complex caused an increase in the chemiluminescence (CL) of luminol in a reverse micellar medium of cetyltrimethylammonium chloride in chloroform-cyclohexane (6:5 vlv)-water (buffered with NaOH-Na2C03, pH 12.5) even in the absence of an oxidizing reagent such as hydrogen peroxide. In this CL process, the reaction of Luminol with the oxovanadi...

Journal: :Spectrochimica acta. Part A, Molecular and biomolecular spectroscopy 2009
Sayyed Faramarz Tayyari Tayyebeh Bakhshi Maryam Ebrahimi Robert Erik Sammelson

The structure of beryllium acetylacetonate, Be(acac)(2), was fully optimized at the B3LYP (using the 6-31G*, 6-311G*, and 6-311++G(3df,2p) basis sets), Hartree-Fock, and the Möller-Plesset (using the 6-31G* basis set) levels. The frequency and intensity of the vibrational bands of Be(acac)(2) and its 1,3,5-(13)C; 2,4-(13)C; 3-(2)H; 3-(2)H-2,4-(18)O derivatives were obtained at the B3LYP level u...

2001
Kai Liu Dan Ryan Koji Nakanishi Ann McDermott

The solid state nuclear magnetic resonance (SSNMR) spectra of protons, deuterons, and carbons in the ligands of paramagnetic coordination complexes including acetylacetonate complexes, amino acid complexes, hydrates of the first row transition metals, and lanthanide acetates have been obtained. It has been known for some time that, for small paramagnetic species in solution, deuterium NMR can g...

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