Search results

article

Lanthanide(III) compounds with the N2O4-donor Schiff base – Synthesis, spectral, thermal, magnetic and luminescence properties

Beata Cristóvão, Zbigniew Hnatejko, B. Cristovao, Z. Hnatejko

Journal of Molecular Structure > 2015 > 1088 > Complete > 50-55

New Schiff base complexes [Ln(NO ₃ ) ₃ H ₂ L] (where: Ln=Gd (1), Tb (2), Dy (3), Ho (4) and Er (5), H ₂ L=N,N′-bis(5-bromo-3-methoxysalicylidene)propylene-1,3-diamine have been synthesized and characterized using elemental analysis, FTIR spectroscopy, thermogravimetric methods (TG–DSC), magnetic measurements, UV–Vis and luminescence studies. The compounds 1–5 follow...

article

The triazine-based azo–azomethine dyes; spectroscopy, solvatochromism and biological properties of 2,2′-((2,2′-(6-methoxy-1,3,5-triazine-2,4-diyl) bis(oxy)bis(2,1-phenylene))bis(azan-1-yl-1-ylidene)bis(methan-1-yl-1-ylidene))bis(4-phenyldiazenyl)phenol

Motaleb Ghasemian, Ali Kakanejadifard, Farideh Azarbani, Abedin Zabardasti, more

Journal of Molecular Liquids > 2014 > 195 > Complete > 35-39

The macrocyclic azo–azomethine dyes 2,2′-((2,2′-(6-methoxy-1,3,5-triazine-2,4-diyl) bis(oxy)bis(2,1-phenylene))bis(azan-1-yl-1-ylidene)bis(methan-1-yl-1-ylidene))bis(4-phenyl diazenyl)phenol and its substituted derivatives were synthesized and characterized by elemental analysis, mass, FT-IR, UV, ¹ H and ¹³ С NMR spectroscopy. The solvatochromism of dyes was evaluated in various solvents...

article

Schiff base bridged biporphyrin: Synthesis, characterization and spectral properties

Ya Hong Wu, Ling Ling Hu, Jing Zhang, Jian Yu, more

Inorganic Chemistry Communications > 2014 > 45 > Complete > 10-14

Chromophoric molecules with mono-aminophenyl, 5-aminophenyl-10, 15, 20-triphenyl porphyrin, were chemically reduced from the precursors of 5-nitrophenyl-10, 15, 20-triphenyl porphyrin. The titled Schiff base bridged biporphyrins were furthermore prepared by condensation of 5-aminophenyl-10, 15, 20-triphenyl porphyrin with terephthalaldehyde. This novel conjugated Schiff base biporphyrin was well characterized...

article

Sensitized luminescence of Eu(III) complexes with Schiff-base and 1,10-phenanthroline: Role of Schiff-base as a sensitizer

Jong Cheol Lee, Yong-Kwang Jeong, Jong-Moon Kim, Jun-Gill Kang, more

Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy > 2014 > 124 > Complete > 256-264

The synthesis and characterization of two europium(III) complexes, [Eu(L)(H ₂ O)]Cl and [Eu(L)(phen)(H ₂ O)]Cl (L=N,N'-bis(salicylidene)-3,6-dioxa-1,8-diaminooctanato and phen=1,10-phenanthroline) are reported. Exciting the Eu(III) complexes with near-UV light resulted in sensitized red luminescence by a transfer of energy from the triplet excited states of L to the Eu(III) ion. Introducing...

article

Structure and magnetic properties of A Cu(II) coordination polymer supported by a tetrapodal Schiff base ligand

Guang-Qi Jiang, Shao-Jie Li, Yun-Qian Zhang, Qian-Jun Zhang, more

Inorganic Chemistry Communications > 2014 > 40 > Complete > 172-175

A Cu(II) Schiff base coordination polymer, {[Cu ₃ L(μ ₂ -NO ₃ ) ₂ ·(H ₂ O) ₂ ].3H ₂ O} _n , is readily prepared by complexation of the tetrapodal Schiff base, H ₄ L (H ₄ L=1,1,1,1-tetrakis[(salicylaldimino)methyl]methane), with cupric nitrate trihydrate. It has been demonstrated that the coordination polymer consists of...

article

Development of a new ternary photoluminescence enhancement system of Eu–N-(2-hydroxy-1-naphthaldehyde)-1,8-diaminonaphthalene–1,10-phenanthroline for trace determination of Eu3+

Lijuan Zhang, Yugang An, Waqar Ahmad, Yunshan Zhou, more

Journal of Luminescence > 2013 > 143 > Complete > 157-161

A new Schiff base ligand N-(2-hydroxy-1-naphthaldehyde)-1,8-diaminonaphthalene (NHND) was synthesized and characterized, and a new ternary photoluminescence enhancement system Eu–NHND–1,10-phenanthroline in acetonitrile was successfully developed to determine trace amounts of Eu ³⁺ . The excitation and emission wavelengths were 274 and 617nm, respectively. Under optimal conditions, the photoluminescence...

article

A facile and effective synthesis of 2-azetidinones via phosphonitrilic chloride

Maaroof Zarei, M. Zarei

Tetrahedron > 2013 > 69 > 32 > 6620-6626

The Staudinger reaction of imines to β-lactams was successfully achieved with substituted acetic acid and phosphonitrilic chloride in one-pot under mild conditions. Several types of β-lactams, especially 3-electron-withdrawing group β-lactams, can be synthesized by this versatile and efficient method in good to excellent yields. This method is simple, clean, and the by-products were removed by simple...

article

Tuning of the optical properties of chiral Schiff base Zn(II) complexes by substituents

Takashi Onodera, Takashiro Akitsu, T. Onodera, T. Akitsu

Polyhedron > 2013 > 59 > Complete > 107-114

Three new chiral Schiff base zinc(II) complexes, bis(N-R-1-phenylethyl-3-methoxysalicydenaminato) zinc(II), bis(N-R-1-naphthylethyl-3-methoxysalicydenaminato) zinc(II) and bis(N-R-1-naphthylethyl-5-methoxysalicydenaminato) zinc(II), have been prepared and characterized structurally. They are found to have a distorted square planar or compressed tetrahedral trans-[ZnN ₂ O ₂ ] coordination...

article

Synthesis, characterization and anti-microbial study of some organometallic complexes of multi-dentate Schiff bases derived from 3-Aldehydosalicylic acid at various pH ranges

Basavaraj M. Kalshetty, Shambuling S. Karabasannavar, Ramesh S. Gani, Mallikarjun B. Kalashetti, more

Drug Invention Today > 2013 > 5 > 2 > 105-112

Objective: The aim of the present work was to synthesize different types of complex compounds of two Schiff base ligands with metal ions by varying pH and solvent during their synthesis. Methods: New Schiff base ligands formed by the condensation of 3-Aldehydosalicylic acid with equimolar quantity of Isonicotinoyl hydrazide (Isoniazid) and 4-Amino-5-phenyl-3-mercapto-1,2,4-Triazole forming 2-hydroxy-3-(2-isonicotinoyl...

article

A new bio‐active Schiff base ligand and its Ni(II), Cu(II), Ag(I), Zn(II), Cd(II), and La(III) binuclear complexes: synthesis, DFT analysis, antimicrobial, DNA interaction, COXII inhibition, and molecular docking studies

Laila H. Abdel‐Rahman, Saleh F. Alzarzah, Mohamed Abdel‐Hameed, Mohamed R. Shehata, more

Applied Organometallic Chemistry > 38 > 9 > n/a - n/a

In the present work, 2‐hydroxy‐1‐naphthaldhyde and 2‐hydrazino‐N‐phenyl‐2‐thioxo‐acetamide are combined to create a new Schiff base. The novel ligand and its six new binuclear complexes with Ni(II), Cu(II), Ag(I), Zn(II), Cd(II), and La(III) are characterized via spectroscopic and analytical techniques, such as ultraviolet‐visible (UV–vis), infrared (IR), ¹H NMR, ¹³C NMR, mass spectra, powder X‐ray...

article

Fabrication of an innovative phosphonate Schiff base adsorbent for molybdenum adsorption and its applications for molybdenum adsorption from spent hydrodesulfurization catalyst

Huda M. Younis

Journal of Chemical Technology & Biotechnology > 99 > 9 > 2003 - 2026

BACKGROUND To investigate the recovery of molybdate from water and hydrodesulfurization catalysts, a novel synthesized phosphonate Schiff base, 4,4′‐(((2,2‐dimethylpropane‐1,3‐diyl) bis(azaneylylidene)) bis(methaneylylidene)) bis(2‐methoxyphenol) (HMI) and 4‐(((3‐((4‐(((S)‐hydroxyhydrophosphoryl)oxy)‐3‐methoxybenzylidene) amino)‐2,2‐dimethylpropyl)imino)methyl)‐2‐methoxyphenyl hydrogen phosphonate...

article

Synthesis, Characterization, Antimicrobial and In Silico Studies of Isatin Schiff Base Linked 1,2,3‐Triazole Hybrids

Vijay Kumar, Akanksha Bhukal, Anirudh Pratap Singh Raman, Prashant Singh, more

Chemistry & Biodiversity > 21 > 7 > n/a - n/a

A new series of isatin‐Schiff base linked 1,2,3‐triazole hybrids has been synthesized using CuAAC approach from (E)‐3‐(phenylimino)‐1‐(prop‐2‐yn‐1‐yl)indolin‐2‐one derivatives in high yield (73–91 %). These synthesized derivatives were characterized using FT‐IR, ¹H NMR, ¹³C NMR, 2D‐NMR and HRMS spectral techniques. The in vitro antimicrobial activity assay demonstrated that most of the tested hybrids...

article

Selective and efficient electrochemical sensing of Cd²⁺ ions and hydroquinone in aqueous medium by katiragum dialdehyde‐tryptophan Schiff base modified glassy carbon electrode

Rakesh Kumar Saren, Tridib Tripathy

Applied Organometallic Chemistry > 38 > 8 > n/a - n/a

Katiragum dialdehyde‐tryptophan Schiff base (KGDT) is developed for selective and efficient detection of Cd²⁺ ion and hydroquinone (HQ) in the aqueous medium by electrochemical method. KGDT is synthesized by selectively oxidizing the C₂‐C₃ bond of katiragum with sodium meta periodate (NaIO₄) to obtain katiragum dialdehyde (KGD), followed by condensation between KGD and an α‐amino acid (L)‐tryptophan...

article

Probing the variations of synthesis, antimicrobial activity, and optical properties of new lanthanide and transition metal complexes of salicylaldehyde‐dipropylenetriamine ligand

Mohammad Ebqa'ai, Daniel R. Reed, Anas Abu Seni, Hassan Abul‐Futouh, more

Applied Organometallic Chemistry > 38 > 8 > n/a - n/a

Due to their notable antimicrobial activity and optical properties, Schiff base ligands, along with their lanthanide and transition metal complexes, have seen extensive use in various applications. However, despite their potential, a comprehensive investigation into lanthanide and transition metal complexes using the same Schiff base ligand has not been reported to date. In this study, coordination...

article

Platinum (II) Schiff Base Complexes and their Effects on the Inhibition of Amyloid β_1–42 Aggregation

Sevil İrişli, Salih Günnaz, Özge Özcan, Aydan Arı, more

Applied Organometallic Chemistry > 38 > 8 > n/a - n/a

For synthesizing metal–organic molecules with pro‐drug properties to prevent the accumulation of amyloid beta (Aβ_1–42), which is a feature of neurodegenerative Alzheimer's disease, two new Schiff bases with imine/amine donors 2‐([3,3‐diphenylalidene]amino)‐N,N‐dimethylethane‐1‐amine and N,N‐dimethyl‐2‐([quinolin‐4‐ylmethylene]amino)ethane‐1‐amine, as well as their novel Pt (II) complexes (I and II),...

article

Cu²⁺ catalyzed benzoxazole formation from Schiff base: Reactive organic chemosensors and effect of hydroxyl position

Sasikala Ravi, Prakash Priyadharshini, Fatimah A. M. Al‐Zahrani, Abdullah G. Al‐Sehemi, more

Applied Organometallic Chemistry > 38 > 8 > n/a - n/a

Triphenylamine (TPA)‐based Schiff base chemosensors ((E)‐2‐((4‐(diphenylamino)benzylidene)amino)phenol [TPA‐AP], (E)‐5‐(diphenylamino)‐2‐(((2‐hydroxyphenyl)imino)methyl)phenol [HTPA‐AP], and (E)‐5‐(diphenylamino)‐2‐((phenylimino)methyl)phenol [HTPA‐A]) were synthesized and explored the role of metal chelating hydroxyl functionality position for heavy metal ion sensing. TPA‐AP and HTPA‐AP showed Cu...

article

Spectral, XRD, morphological, DFT, and molecular modeling investigations of newly prepared isatin Schiff base complexes

Bassant S. Moustafa, Mohamed M. Omar, Wesam S. Qayed, Hanan F. AbdEl‐Halim, more

Applied Organometallic Chemistry > 38 > 8 > n/a - n/a

The new Schiff base ligand was designed from a condensation reaction of isatin with 5‐amino‐2‐hydroxy benzoic acid. Then, the metal complexes were prepared. The structures of the prepared compounds were framed from thermogravimetric analyses (TG–DTG), mass spectrometry, elemental analyses, ¹H‐NMR, IR, electronic spectra, UV–vis, and conductivity measurements. Surface and size morphology have been...

article

Efficient, rapid, and high‐yield synthesis of aryl Schiff base derivatives and their in vitro and in silico inhibition studies of hCA I, hCA II, AChE, and BuChE

Musa Özil, Halis T. Balaydın, Berna Dogan, Murat Şentürk, more

Archiv der Pharmazie > 357 > 7 > n/a - n/a

This study reports a rapid and efficient synthesis of four novel aryl Schiff base derivatives. Biological activity and molecular modeling studies were conducted to evaluate the inhibitory effects of these compounds on human carbonic anhydrases (hCA) and cholinesterases. The results indicate that the triazole‐ring‐containing compounds have strong inhibitory effects on hCA I, hCA II, acetylcholinesterase...

article

A fully bio‐based epoxy resin with excellent mechanical properties combines flame retardancy and degradability

Yuquan Chen, Bin Ren, Xuemei Li, Suhan Rao, more

Polymers for Advanced Technologies > 35 > 6 > n/a - n/a

Traditional epoxy resins are made from non‐renewable fossil resources, which are difficult to reprocess and recycle, and their flammability makes them unsafe during use. In this experiment, an epoxy resin containing Schiff base (TA‐VAN‐EP) was synthesized successfully with biomass‐derived raw materials. This new material not only had favorable mechanical properties but also had good flame retardancy...

article

Substituted Pyrrole‐based Schiff Bases: Effect On The Luminescence Of Neutral Heteroleptic Cu(I) Complexes

Valentina Ferraro, Olaf Fuhr, Claudia Bizzarri, Stefan Bräse

European Journal of Inorganic Chemistry > 27 > 17 > n/a - n/a

Neutral Cu(I) complexes containing Schiff bases as chelating N‐donors and phosphines as P‐donors were efficiently isolated and characterized. The imines were obtained by straightforward condensation between pyrrole‐2‐carboxaldehyde and the corresponding aromatic amines. The structure of most of the Cu(I) species was elucidated through single‐crystal X‐ray diffraction. The Cu(I) complexes exhibited...

INFONA - science communication portal

Search results

Lanthanide(III) compounds with the N2O4-donor Schiff base – Synthesis, spectral, thermal, magnetic and luminescence properties

The triazine-based azo–azomethine dyes; spectroscopy, solvatochromism and biological properties of 2,2′-((2,2′-(6-methoxy-1,3,5-triazine-2,4-diyl) bis(oxy)bis(2,1-phenylene))bis(azan-1-yl-1-ylidene)bis(methan-1-yl-1-ylidene))bis(4-phenyldiazenyl)phenol

Schiff base bridged biporphyrin: Synthesis, characterization and spectral properties

Sensitized luminescence of Eu(III) complexes with Schiff-base and 1,10-phenanthroline: Role of Schiff-base as a sensitizer

Structure and magnetic properties of A Cu(II) coordination polymer supported by a tetrapodal Schiff base ligand

Development of a new ternary photoluminescence enhancement system of Eu–N-(2-hydroxy-1-naphthaldehyde)-1,8-diaminonaphthalene–1,10-phenanthroline for trace determination of Eu3+

A facile and effective synthesis of 2-azetidinones via phosphonitrilic chloride

Tuning of the optical properties of chiral Schiff base Zn(II) complexes by substituents

Synthesis, characterization and anti-microbial study of some organometallic complexes of multi-dentate Schiff bases derived from 3-Aldehydosalicylic acid at various pH ranges

A new bio‐active Schiff base ligand and its Ni(II), Cu(II), Ag(I), Zn(II), Cd(II), and La(III) binuclear complexes: synthesis, DFT analysis, antimicrobial, DNA interaction, COXII inhibition, and molecular docking studies

Fabrication of an innovative phosphonate Schiff base adsorbent for molybdenum adsorption and its applications for molybdenum adsorption from spent hydrodesulfurization catalyst

Synthesis, Characterization, Antimicrobial and In Silico Studies of Isatin Schiff Base Linked 1,2,3‐Triazole Hybrids

Selective and efficient electrochemical sensing of Cd²⁺ ions and hydroquinone in aqueous medium by katiragum dialdehyde‐tryptophan Schiff base modified glassy carbon electrode

Probing the variations of synthesis, antimicrobial activity, and optical properties of new lanthanide and transition metal complexes of salicylaldehyde‐dipropylenetriamine ligand

Platinum (II) Schiff Base Complexes and their Effects on the Inhibition of Amyloid β_1–42 Aggregation

Cu²⁺ catalyzed benzoxazole formation from Schiff base: Reactive organic chemosensors and effect of hydroxyl position

Spectral, XRD, morphological, DFT, and molecular modeling investigations of newly prepared isatin Schiff base complexes

Efficient, rapid, and high‐yield synthesis of aryl Schiff base derivatives and their in vitro and in silico inhibition studies of hCA I, hCA II, AChE, and BuChE

A fully bio‐based epoxy resin with excellent mechanical properties combines flame retardancy and degradability

Substituted Pyrrole‐based Schiff Bases: Effect On The Luminescence Of Neutral Heteroleptic Cu(I) Complexes

Filter options

Publication date

Content availability

Publication type

Publication language

Keywords

Data set

INFONA - science communication portal

Search results

Add recipient

Sending message cancelled

Are you sure you want to cancel sending this message?

Send message

Filter options

Publication date

Date range setting

Set the date range to filter the displayed results. You can set a starting date, ending date or both. You can enter the dates manually or choose them from the calendar.

Content availability

Publication type

Publication language

Keywords

Data set

Reporting an error / abuse

Sending the report failed

Accessibility options