نتایج جستجو برای: amine ligands

تعداد نتایج: 123923  

Journal: :Dalton transactions 2013
Fei Xue Jin Zhao T S Andy Hor

Structurally distinctive dinuclear Ni(II) complexes with furan or thiophene tethered amine-pyrazolyl tripodal hybrid ligands have been synthesized and crystallographically characterized. All complexes are catalytically active towards cross-coupling of aryl/alkyl Grignard reagents with β-H containing alkyl halides at room temperature in the presence of N,N,N',N'-tetramethylethylenediamine (TMEDA...

2013
Keiko Ikemoto

Neural stem cell (NSC) hypofunction is an etiological hypothesis of schizophrenia. Although dopamine (DA) dysfunction is also a widely accepted hypothesis, molecular background of mesolimbic DA hyperactivity has not yet been well known. Here, the author proposes “D-cell hypothesis”, accounting for molecular basis of mesolimbic DA hyperactivity of schizophrenia, by NSC hypofunction and decrease ...

Journal: :European Journal of Organic Chemistry 2021

Starting from (R)-Ugi's amine, diastereoselective lithiation followed by Ar'PCl2 and then Ar’’MgBr led to the generation, as single diastereoisomers, of (R,Sp,Sphos) [Ar’=Ph, Ar’’=o-Tol] (R,Sp,Rphos) [Ar’=o-Tol, Ar’’=Ph] PPFA ligand derivatives. Amine substitution both with HPCy2 gave P-stereogenic Josiphos ligands, addition CuCl, corresponding copper(I) complexes. The latter were also generate...

Journal: :Coordination Chemistry Reviews 2021

Chiral molecules are widely used in many fields of research and so practically simple, accurate methods to measure their enantiopurities required. This review’s initial focus is on one such method, the Bull-James assembly, which employs a three-component protocol combining 2-formylphenyl boronic acid, an amine, diol self-assemble diastereomeric iminoboronate ester (IBE) complexes whose ratio ca...

Journal: :Inorganica Chimica Acta 2022

Controlling the bio-inspired redox conversion of Co(II)–disulfide compounds to their related Co(III)–thiolate complexes is a perplexing task as factors triggering this reaction are not fully understood. Three disulfide ligands 2,2?–disulfanediylbis(N,N-bis((3,5–dimethyl-1H–pyrazol–1–yl)methyl)ethan-1-amine) (LmpzSSLmpz), 3,3?-disulfanedylbis(N,N-bis(pyridin-2-ylmethyl)propan-1-amine) (LpSSLp), ...

Journal: :Physical chemistry chemical physics : PCCP 2008
Junghan Lee Junwon Kim Eunjung Park Shineun Jo Rita Song

Quantum dots (QDs) have size-tunable optical properties, such as photostability, strong photoluminescence and a large Stokes-shift, which make it possible to adapt them to various biological applications. In many cases, surface modification of QDs by carboxylate ligands has been extensively studied. However, there have been few applications on QDs modified with a potential cationic ligand such ...

Journal: :Organic & biomolecular chemistry 2015
Chuandong Jia Qi-Qiang Wang Rowshan Ara Begum Victor W Day Kristin Bowman-James

The influence of chelate and mini-chelate effects on sulfate binding was explored for six amide-, amide/amine-, urea-, and urea/amine-based ligands. Two of the urea-based hosts were selective for SO4(2-) in water-mixed DMSO-d6 systems. Results indicated that the mini-chelate effect provided by a single urea group with two NH binding sites appears to provide enhanced binding over two amide group...

Journal: :Angewandte Chemie 2014
Wenjun Zhao Li Huang Yong Guan William D Wulff

The first chiral catalyst for the three-component Ugi reaction was identified as a result of a screen of a large set of different BOROX catalysts. The BOROX catalysts were assembled in situ from a chiral biaryl ligand, an amine, water, BH3·SMe2, and an alcohol or phenol. The catalyst screen included 13 different ligands, 12 amines, and 47 alcohols or phenols. The optimal catalyst system (LAP 8-...

2010
Jason W. Clements Milorad Stojanovic Norris W. Hoffman Richard E. Sykora

In the title compound, [Pd(C(9)H(12)N)Cl(C(4)H(6)N(2))], which was synthesized from the reaction of 1-methyl-imidazole with dimeric dichloridobis[2-(dimethyl-amino)-benz-yl]palla-dium(II), the ring-deprotonated N,N-dimethyl-benzyl-amine ligand acts in a C,N-bidentate fashion. The dihedral angle between the ring of the 1-methyl-imidazole ligand and the palladacycle plane is 57.88 (16)°. The two ...

Journal: :Dalton transactions 2014
T Ganesh Hong-Minh Nguyen Rajaram S Mane Nakjoong Kim Dipak V Shinde Sambhaji S Bhande Mu Naushad K N Hui Sung Hwan Han

Employing newly synthesized di-substituted tri-phenyl amine (HMP-9) and carbazole (HMP-11) dyes (with limited acidic carboxyl anchor groups), a power conversion efficiency as high as 7.03% in ZnO nanocrystallite (NC)-based dye-sensitized solar cells (DSSCs) is achieved. The specific molecular designs of HMP-09 and HMP-11 consisting of with and without hexyloxy spacer groups, and added tri-pheny...

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