Synthesis, characterization and catalytic activity of Fe(III) complexes containing Schiff base and triphenylphosphine ligands

Rani, Sandya; Bhat, Badekai Ramachandra

doi:10.1016/j.inoche.2010.07.018

Cited by 5 publications

(2 citation statements)

References 26 publications

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“…Considerable attention has been focused on Schiff bases and their complexes because of the interesting structures and applications [1][2][3]. The cadmium(II) complexes are widely investigated for their fluorescent properties [4][5][6].…”

Section: Discussionmentioning

confidence: 99%

Crystal structure of bis(μ2-thiocyanato-N,S)-bis(isothiocyanato)- bis[(2-morpholin-4-ylethyl)-(1-pyridin-2-ylethylidene)amine-N,N′,N″]- dicadmium(II), Cd2(NCS)4(C13H19N3O)2

Lou¹,

Qiu²

2011

Zeitschrift Für Kristallographie - New Crystal Structures

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C 30H38Cd2N10O2S4,m onoclinic, P121/c1(no. 14), a =7.4031(3) Å, b =26.526(1) Å, c =10.0970(4) Å, b =108.111(2)°, V =1884.6 Å 3 , Z =2,R gt (F) =0.024, Source of materialAmethanol solution of Cd(OAc)2 · 2H 2 O(0.26 g, 1mmol) was added to amethanol solution (30 ml) of ammonium thiocyanate (0.15 g, 2mmol) and the Schiff base ligand (2-morpholin-4-ylethyl)-(1-pyridin-2-ylethylidene)amine (0.23 g, 1m mol) with stirring. The resulting solution was allowed to stand at room temperature for aweek, yielding colorless block-shaped single crystals. Experimental detailsHatoms were constrained to ideal geometries, with d(C-H) = 0.93 -0.97 Å,and U iso(H) =1.2 Ueq(C) or 1.5 Ueq(C7). DiscussionConsiderable attention has been focused on Schiff bases and their complexes because of the interesting structures and applications [1][2][3]. The cadmium(II) complexes are widely investigated for their fluorescent properties [4][5][6]. The title crystal structure is built up of acentrosymmetric dimeric cadmium(II) complex. The Cd···Cd distance is 5.936(2) Å.The Cd(II) atom is coordinated by three Na toms of the tridentate ligand 2-morpholin-4-ylethyl)-(1-pyridin-2-ylethylidene)amine, two Nand one Satoms from three thiocyante ligands, forming a distorted octahedron. The two halves of the dimer are related by a center of inversion. The distortion of the octahedral coordination can be observed on the bond angles: ∠N1-Cd1-N2 =68.43(7)°a nd ∠N2-Cd1-N3 =74.55°are much smaller than 90°,which is caused by the strain created by the five-membered chelate rings N1-Cd1-N2-C6-C1 and N2-Cd1-N3-C9-C8, respectively. The bond lengths d(Cd-N) are in the range of 2.99(2) -2.438(2) Å and d(Cd-S) =2.6712(6) Å,which is comparable to the similar cadmium(II) complexes with Schiff bases [7][8][9].

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Section: Discussionmentioning

confidence: 99%

Crystal structure of bis(μ2-thiocyanato-N,S)-bis(isothiocyanato)- bis[(2-morpholin-4-ylethyl)-(1-pyridin-2-ylethylidene)amine-N,N′,N″]- dicadmium(II), Cd2(NCS)4(C13H19N3O)2

Lou¹,

Qiu²

2011

Zeitschrift Für Kristallographie - New Crystal Structures

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“…The degradation kinetics curves conform to the quasi-first-order kinetic equation with a rate constant of 2.27×10 -2 min -1 . The rare earth binuclear complex synthesized by Wei et al [19] also showed good catalytic activity for the polymerization of MMA, which provides a new choice for industrial production.…”

Section: Application In the Field Of Catalysismentioning

confidence: 97%

Studies on near-infrared luminescent complexes of rare earth Schiff bases

Zhao,

Liu

2024

International Conference on Optoelectronic Information and Functional Materials (OIFM 2024)

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Because some Schiff bases have some special biological activities, the use of Schiff bases as ligands to form complexes with metal ions can show good biological activities. Amino acids, Schiff bases and their corresponding ligands have been reported to have unique antibacterial, bactericidal, anti-tumor, antiviral and detoxification effects. Therefore, complexes formed by rare earth metals and Schiff base ligands have attracted much attention due to their diverse structures. In this paper, the luminescence mechanism of rare earth polymers and the synthesis and fluorescence properties of rare earth Schiff base ligand complexes are reviewed. The research progress of Schiff base rare earth near-infrared luminescent complexes in the fields of medicine, antibacterial materials and bioimaging was reviewed. The future application and research of Schiff base were also prospected. Because some Schiff bases have some special biological activities, Schiff bases are used as ligands to form complexes with metal ions, which can show good biological activities. It is reported that amino acids, base acids, Schiff bases and their corresponding ligands have unique effects of antibacterial, bactericidal, anti-tumor, anti-viral and detoxification. Therefore, complexes formed by rare earth metals and Schiff base ligands have attracted people's attention due to their diverse structures and wide applications. In this paper, the luminescence mechanism of rare earth polymers is summarized, and the synthesis and fluorescence properties of mononuclear, binuclear and multinuclear rare earth complexes of Schiff base ligands are reviewed. The research progress of Schiff base rare earth nearinfrared luminescent complexes in medicine, antibacterial materials, bioimaging and other fields was summarized, and their future application and research were prospected.

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Catalysis of Organic Processes by Metal Phenolates

Serra¹,

Murtinho²

2012

Patai's Chemistry of Functional Groups

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Transition metal catalysts with phenolates as ligands constitute an extensive class of complexes with application in a great variety of catalytic transformations.Because phenol groups can be sterically and electronically modified by the introduction of substituents with different characteristics, the door is opened to a myriad of catalysts with characteristics of reactivity and selectivity for promoting innumerous transformations of synthetic interest in organic chemistry. Metal phenolates have therefore become essential participants in catalytic organic synthesis, including catalytic asymmetric synthesis. Oxidations of alkenes, sulfides, alcohols and alkanes, additions of trimethylsilylcyanide, diorganozincs and nitroalkanes to CO and CN bonds and Diels–Alder reactions are some examples of the types of reactions that are promoted by these catalysts. This chapter provides an overview of recent advances in the catalysis of organic processes by metal phenolates, with emphasis on the last decade.

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Synthesis, characterization and catalytic activity of Fe(III) complexes containing Schiff base and triphenylphosphine ligands

Cited by 5 publications

References 26 publications

Crystal structure of bis(μ2-thiocyanato-N,S)-bis(isothiocyanato)- bis[(2-morpholin-4-ylethyl)-(1-pyridin-2-ylethylidene)amine-N,N′,N″]- dicadmium(II), Cd2(NCS)4(C13H19N3O)2

Crystal structure of bis(μ2-thiocyanato-N,S)-bis(isothiocyanato)- bis[(2-morpholin-4-ylethyl)-(1-pyridin-2-ylethylidene)amine-N,N′,N″]- dicadmium(II), Cd2(NCS)4(C13H19N3O)2

Studies on near-infrared luminescent complexes of rare earth Schiff bases

Catalysis of Organic Processes by Metal Phenolates

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