94-93-9Relevant articles and documents
Synthesis and spectral investigation (1H and 13C) of Tetradentate schiff base Ligands for the preparation of post transition bimetallic complexes of antimicrobial importance
Zahoor, Ameer Fawad,Yousaf, Muhammad,Pervaiz, Muhammad,Anjum, Anbreen,Ali, Kulsoom Ghulam,Zahid, Faisal Maqbool,Ahmad, Sajjad,Bukhari, Shazia Anwer,Parveen, Bushra
, p. 841 - 845 (2014)
A tetradentate Schiff base ligand 2-(bis-2-hydroxylphenylidene)-1,2- diiminoethanne (L) was synthesized and then its structure was investigated by 1H NMR and 13C NMR techniques. The ligand and its bimetallic complexes were screened in vitro for
Synthesis, characterization and catalytic activity of Fe(Salen) intercalated α-zirconium phosphate for the oxidation of cyclohexene
Khare, Savita,Chokhare, Rajendra
, p. 83 - 92 (2011)
Iron(III)-Salen intercalated α-zirconium phosphate, abbreviated as {α-ZrP·Fe(Salen)} was synthesized in situ by the flexible ligand method. The resulting compound was characterized by BET surface area, X-ray diffraction, scanning electron microscopy, ener
Synthesis, characterization and biological studies of bis-{μ-2,2'- [ethane-1,3-diylbis(nitrilomethylidyne)]diphenolato}dicopper(II) Using Triple Component Solvent System
Yousaf, Muhammad,Pervaiz, Muhammad,Zahoor, Ameer Fawad,Hussain, Abdullah Ijaz,Khosa, Muhammad Kaleem Khan,Ashraf, Sadia,Sagir, Muhammad,Ashar-Uz-Zaman,Shehzad, Khurram
, p. 521 - 524 (2013)
The bis-{μ-2,2'-[ethane-1,3-diyl-bis(nitrilomethylidyne)]diphenolato} dicopper(II) with the molecular formula [Cu2(C16H 14N2O2)2] shows the dimeric complex. Distorted square pyramidal geome
First examples of near-infrared luminescent poly(methyl methacrylate)-supported metallopolymers based on Zn2Ln-arrayed schiff base complexes
Miao, Tie-Zheng,Feng, Wei-Xu,Zhang, Zhao,Su, Pei-Yang,Lü, Xing-Qiang,Song, Ji-Rong,Fan, Dai-Di,Wong, Wai-Kwok,Jones, Richard A.,Su, Cheng-Yong
, p. 2839 - 2848 (2014)
The first examples of Wolf Type II Zn2Ln-containing metallopolymers poly{MMA-co-[Zn2(L)2(4-vp) 2Ln(NO3)3]} (Ln = La, Nd, Yb, Er, Gd; H 2L = N,N′-bis(salicylidene)ethylene-1,2-diamine; 4-vp = 4-vinylpyridine; MMA = methyl methacrylate) are obtained from the controlled copolymerization of heterotrinuclear Zn2Ln-arrayed complexes [Zn 2(L)2(4-vp)2Ln(NO3)3] (Ln = La, 1; Ln = Nd, 2; Ln = Yb, 3; Ln = Er, 4; Ln = Gd, 5) with MMA. The strong and characteristic near-infrared (NIR) luminescent Ln3+-centered emission for each of the PMMA-supported poly{MMA-co-[Zn2(L) 2(4-vp)2Ln(NO3)3]} (Ln = Nd, Yb, Er) hybrid materials is retained with somewhat higher intrinsic quantum yields than those of the respective Zn2Ln-arrayed complex. Especially for poly(MMA-co-3), which has more efficient sensitization from both ligand-centered singlet (1LC) and triplet (3LC) states of the chromophores, the concentration self-quenching of Yb3+-based NIR luminescence could be effectively prevented. The first examples of Wolf Type II near-infrared-luminescent Zn2Ln-containing metallopolymers poly{MMA-co-[Zn2(L)2(4-vp)2Ln(NO 3)3]} (H2L = N,N′-bis(salicylidene) ethylene-1,2-diamine; Ln = La, Nd, Yb, Er, Gd; MMA = methyl methacrylate; 4-vp = 4-vinylpridine) are obtained from the controlled copolymerization of MMA with a series of Zn2Ln-arrayed Schiff base complexes [Zn 2(L)2(4-vp)2Ln(NO3)3]. Copyright
C-C and C-H coupling reactions by Fe3O4/KCC-1/APTPOSS supported palladium-salen-bridged ionic networks as a reusable catalyst
Hassankhani, Asadollah,Sadeghzadeh, Seyed Mohsen,Zhiani, Rahele
, p. 8761 - 8769 (2018)
This study investigates the potential application of an efficient, easily recoverable and reusable magnetically separable Fe3O4/KCC-1/APTPOSS nanoparticle-supported salen/Pd(ii) catalyst for C-C and C-H cross-couplings. The Fe3O4/KCC-1/APTPOSS/salen/Pd(ii) MNPs were thoroughly characterized by using TEM, FE-SEM, TGA, XRD, VSM, FT-IR, ICP-MS, and BET. This observation was exploited in the direct and selective chemical reaction of 2-acetyl-benzaldehyde with cyclopentadiene for the synthesis of pentafulvene. The recycled catalyst has been analyzed by ICP-MS showing only minor changes in the morphology after the reaction, thus confirming the robustness of the catalyst.
Salen copper (II) complex encapsulated in y zeolite: An effective heterogeneous catalyst for TCF pulp bleaching using peracetic acid
Zhang, Na,Zhou, Xue-Fei
, p. 66 - 72 (2012)
Cu(salen) and NaY encapsulated complexes, were synthesized by the "impregnation" (Cu(salen)/Y-IM) and flexible ligand "ship-in-a-botttle" (Cu(salen)/Y-SB) method. The resulting compounds were characterized by XRD, FTIR, DR UV-vis, BET. The encapsulated co
Synthesis, crystal structures, and superoxide dismutase activity of two new multinuclear manganese(III)-salen-4,4′-bipyridine complexes
Deawati, Yusi,Onggo, Djulia,Mulyani, Irma,Hastiawan, Iwan,Kurnia, Dikdik,L?nnecke, Peter,Schmorl, Sara,Kersting, Berthold,Hey-Hawkins, Evamarie
, p. 353 - 357 (2018)
Manganese(III)-salen complexes have been reported as superoxide dismutase mimics (mSOD) that can scavenge superoxide anion radicals. They are mononuclear complexes with a variety of salen ligands. Here, two new multinuclear manganese(III)-salen complexes
Solution behaviour of (N,N'-ethylenebis(salicylideneiminato))- iron(III) chloride in aqueous methanol at 298.15, 303.15 and 313.15 K
Brahman, Dhiraj,Sinha, Biswajit
, p. 225 - 239 (2014)
In this study partial molar volumes (φ0v ) and viscosity B-coefficients of (N,N'-ethylene-bis(salicylideneiminato))iron(III) chloride, abbreviated as FeIII(salen)Cl, in different aqueous methanolic solutions were determine
Synthesis characterization and biological screening of tri-benzyltin(IV) complexes of some Schiff bases
Rehman, Wajid,Badshah, Amin,Baloch, Musa Kaleem,Ali, Saqib,Hameed, Gulzar,Khan, Khalid M.
, p. 929 - 934 (2004)
Synthesis and characterization of some novel di and tri-benzyltin(IV) complexes of some Schiff bases are reported. The 1H-NMR, 13C-NMR, 119Sn-NMR, IR, Elemental Analysis and 119Sn Moessauber studies are made for structural determination. Spectroscopic data reveals that the ligand molecule is bound to the tin atom through oxygen. On the basis of spectroscopic data tetrahedral geometry is proposed for the synthesized compounds. The synthesized compounds have been tested against various microorganisms. The results obtained show that the synthesized compounds have promising activity against all the tested micro-organisms.
Synthesis and characterization of bimetallic post transition complexes for antimicrobial activity
Pervaiz,Yousaf,Sagir,Mushtaq,Naz,Ullah,Mushtaq
, p. 546 - 552 (2015)
Antimicrobial and antibacterial activities of bimetallic complexes are very important in variety of biological mechanisms. In this research work, a Schiff base ligand 2-(bis-2-hydroxylphenylidene)-1,2-iminoethane was prepared by condensation reaction betw
A zig-zag end-to-end azido bridged MnIII 1-D coordination polymer: Spectral elucidation, magnetism, redox study and biological activity
Das, Kuheli,Datta, Amitabha,Beyene, Belete B.,Massera, Chiara,Garribba, Eugenio,Sinha, Chittaranjan,Akitsu, Takashiro,Tanka, Shinnosuke
, p. 315 - 322 (2017)
A zig-zag one-dimensional Mn(III) coordination polymer, {[C6H4(O)CHN(CH2)2NCH(O)C6H4]Mn(N3)}n (1) has been synthesized reacting a manganese salt with the Schiff base precursor H2L, obtained condensing salicyldehyde and ethylenediamine. The compound has been characterized by IR, UV–Vis and EPR spectroscopy. Single crystal X-ray diffraction studies have revealed that the Mn atom possesses a distorted octahedral environment and the metals connected by end-to-end azido ligands lead to the formation of 1-D zig-zag molecular chains. Temperature dependent magnetic studies have shown the presence of weak anti-ferromagnetic coupling among the Mn centers. Cyclic voltammetry has evidenced the presence of a reversible redox couple for the Mn3+/Mn2+ system. Both the ligand and complex 1 exhibit anti-mycobacterial activity and considerable efficacy on Mycobacterium tuberculosis H37Rv ATCC 27294 and M. tuberculosis H37Ra ATCC 25177 strains. The cytotoxicity study on different human cancer cell lines (Caco 2, MCF7 and A549) suggests that complex 1 has potential anticancer properties.
Synthesis, structure, magnetic and catalytic competency of a tetradentate (nnoo) schiff base mediated dimeric copper(ii) complex
CHOWDHURY, HABIBAR,BERA, RAJESH,ADHIKARY, CHANDAN
, p. 1280 - 1286 (2021/06/09)
One dinuclear copper(II) complex {μ-[2,2 -{ethane-1,2-diylbis[(azanylylidene)methanylylidene]}bis(phenolato)]}-{μ-[2,2 -{ethane-1,2- diylbis[(azanylylidene)methanylylidene]}bis(phenolato)]}dicopper(II), [Cu2(salen)2] (1) [salen2- = [2,2 -{ethane-1,2-diylbis- [(azanylylidene)methanylylidene]}bis(phenolato)] has been isolated and characterized by X-ray diffraction analysis and spectroscopic studies. X-ray single crystal structure examination revealed that each Cu(II) center in the asymmetric unit of 1 adopts a distorted square planar geometry with a CuN2O2 chromophore, where two asymmetric units are attached through congregation of Salen involving Cu-O bond to form dinuclear molecular unit [Cu2(salen)2]. In crystalline state, these dinuclear entities in 1 are extended through C-H π interactions and π π interactions displaying a 3D network structure. The variable-temperature magnetic susceptibility measurement asserted a dominant antiferromagnetic interaction between the copper(II) centers through Cu-O-Cu linkage in 1 with J = -1.46 cm-1. The catalytic efficacy of complex 1 was studied in a series of solvents for the oxidation of styrene and cyclooctene using tert-butyl-hydroperoxide (TBHP) as an active oxidant under mild conditions. The catalytic reaction mixture has been analyzed by gas chromatography and it displayed that the yield of the epoxidation and its selectivity is optimum in acetonitrile medium.
A Versatile Electrochemical Batch Reactor for Synthetic Organic and Inorganic Transformations and Analytical Electrochemistry
Bourne, Richard A.,Kapur, Nikil,Nicholls, Thomas P.,Schotten, Christiane,Stephen, Hamish R.,Willans, Charlotte E.,Woodward, Madeleine
, p. 1084 - 1089 (2020/07/06)
A standardized and versatile electrochemical batch reactor that has wide applicability in both organic and inorganic synthesis and analytical electrochemistry has been developed. A variety of synthetic electrochemical transformations have been performed to showcase the versatility and demonstrate the reactor, including the synthesis of five Cu(I)-NHC complexes, two Au(I)-NHC complexes, and one Fe(II)-NHC complex as well as an Fe(III)-salen complex. The reactor is based on a commercially available vial with an adapted lid, making it inexpensive and highly flexible. It features a fixed interelectrode distance, which is crucial for reproducibility, along with the ability to accommodate a variety of interchangeable electrode materials. The reactor has also been used in conjunction with a parallel plate, allowing rapid screening and optimization of an organic electrochemical transformation. Cyclic voltammetry has been performed within the reactor on a range of imidazolium salt analytes with the use of an external potentiostat. The ability to use this reactor for both analytical and synthetic organic and inorganic chemistry is enabled by a flexible and characterizable design.
