A5103002717- Crystallization and Solubility Studies
- X-ray Diffraction in Crystallography
- Metal complexes synthesis and properties
- Organometallic Complex Synthesis and Catalysis
- Lanthanide and Transition Metal Complexes
- Crystallography and molecular interactions
- Ferrocene Chemistry and Applications
- Vanadium and Halogenation Chemistry
- Asymmetric Hydrogenation and Catalysis
- Metal-Catalyzed Oxygenation Mechanisms
- Magnetism in coordination complexes
- Synthesis and Characterization of Heterocyclic Compounds
- Click Chemistry and Applications
- Oxidative Organic Chemistry Reactions
- Metal-Organic Frameworks: Synthesis and Applications
- Synthesis and Biological Evaluation
- Catalytic C–H Functionalization Methods
- Sensor Technology and Measurement Systems
- Organometallic Compounds Synthesis and Characterization
- DNA and Nucleic Acid Chemistry
- Photonic and Optical Devices
- Computational Drug Discovery Methods
- Semiconductor Lasers and Optical Devices
- Crystal structures of chemical compounds
Shiv Nadar University
2022
North Eastern Hill University
2016-2020
Half‐sandwich ruthenium, rhodium and iridium complexes ( 1 – 12 ) were synthesized with aldoxime L1 ), ketoxime L2 amidoxime L3 ligands. Ligands have the general formula [PyC(R)NOH], where R = H CH 3 NH 2 ). Reaction of [{(arene)MCl } ] (arene p ‐cymene, benzene, Cp*; M Ru, Rh, Ir) ligands in 1:2 metal precursor‐to‐ligand ratio yielded such as [{(arene)MLκ (N∩N) Cl}]PF 6 . All act bidentate chelating nitrogen donors κ fashion while forming complexes. In vitro anti‐tumour activity 10 against...
The reaction of [( p ‐cymene)RuCl 2 ] and [Cp*MCl (M = Rh/Ir) with benzoyl (2‐pyrimidyl) thiourea (L1) (4‐picolyl) (L2) led to the formation cationic complexes bearing formula [(arene) M (L1)к (N,S) Cl] + (L2)к ( N,S ) ‐cymene, Ru, 1 , 4 ); Cp*, Rh 5 Ir 3 6 )]. Precursor compounds reacted (6‐picolyl) (L3) affording neutral having (L3)к S Cl [arene 7 8 ), 9 X‐ray studies revealed that methyl substituent attached pyridine ring in ligands L2 L3 affects its coordination mode. When group is at...
The d 6 metal complexes of thiourea derivatives were synthesized to investigate its cytotoxicity. Treatment various N‐phenyl‐N´ pyridyl/pyrimidyl ligands with half‐sandwich precursors yielded a series cationic complexes. Reactions ligand (L1‐L3) [( p ‐cymene)RuCl 2 ] and [Cp*MCl (M = Rh/Ir) led the formation bearing general formula [(arene)M(L1)к ( N,S ) Cl] + , [(arene)M(L2)к [(arene)M(L3)к [arene ‐cymene, M Ru 1 4 7 ); Cp*, Rh 5 8 Ir 3 9 )]. These compounds isolated as their chloride...
The reaction of [(arene)MCl2]2 with pyridylpyrazolyl ligands (L1 and L2) in the presence ammonium hexafluorophosphate leads to formation cationic complexes having general formula [(arene)M(L)Cl]PF6 {M = Ru, arene p-cymene (1, 4); Cp*, M Rh (2, 5); Ir (3, 6); L 2-(1H-pyrazol-1-yl)pyridine (L1), 2-(3,5-dimethyl-1H-pyrazol-1-yl)pyridine (L2)}. Similarly [CpRu(PPh3)2Cl] [(ind)Ru(PPh3)2Cl] (ind η5-C9H7) L1 L2 yielded which have been formulated as [(Cp/ind)Ru(L)PPh3]PF6 (7–10). All these were...
Arene metal precursors on treatment with thiosemicarbazone ligands (L1, L2, and L3) yielded a series of cationic mono- binuclear complexes (1–9) N∩S bonding mode. In general, the have been formulated as [(p-cymene)Ru(L)Cl]+ [Cp*2M2(L)2]4+ where L = L1, L3, M Rh/Ir. Contrary to previous results [1 W. Su, Z. Tang, P. Li, G. Wang, Q. Xiao, Y. S. Huang, Gu, Lai, Zhang. Dalton Trans., 45, 19329 (2016).[Crossref], [PubMed], [Web Science ®] , [Google Scholar]], ruthenium portrayed mononuclear...
Abstract The bonding modes of the ligand di‐2‐pyridyl ketoxime towards half‐sandwich arene ruthenium, Cp*Rh and Cp*Ir complexes were investigated. Di‐2‐pyridyl {pyC(py)NOH} react with metal precursor [Cp*IrCl 2 ] to give cationic oxime general formula [Cp*Ir{pyC(py)NOH}Cl]PF 6 ( 1a ) 1b ), for which two coordination isomers observed by NMR spectroscopy. molecular structures revealed that in major isomer nitrogen one pyridine atoms are coordinated central iridium atom forming a five membered...
Ni(II)-tetradentate amido-quinoline complexes effectively catalysed C-H chlorination of a series hydrocarbons in the presence NaOCl and acetic acid. The bond dissociation energy C(sp3)-H substrates varies from 99.3 kcal mol-1 (cyclohexane) to 87 (ethyl benzene). Exclusively chlorinated products (TON: 220 for cyclohexane) were obtained without any hydroxylated products, thus mimicking activity halogenase enzyme.
Cu( ii )-tetradentate amido-quinoline complexes effectively catalysed aromatic C–H hydroxylation using H 2 O as an oxidant in the absence of external base with a high selectivity around 90% for phenols via non-radical pathway (TON ≥720).
AbstractWe report the synthesis of a Cp*Rh complex bearing pyridyl azine ligand with free amine (NH2) group. The reaction [Cp*RhCl2]2 (L) formed cationic formula [RhIII(η5-C5Me5)(L)к2(N,N')Cl]SbF6 (1) that was characterized by IR, UV-Vis, 1H, 13C{1H} NMR, etc. SC-XRD analysis revealed condensation an acetone molecule NH2 group, thus forming imine –C=N– bond in ligand, giving [RhIII(η5-C5Me5)(L')к2(N,N')Cl]SbF6 (2). coordination geometry around rhodium 2 is pseudo-tetrahedral sites occupied...
Imino-quinolyl Schiff-base ligands have been prepared by the condensation reaction of substituted 2-aminopyridine and quinoline-2-carbaldehyde. The [(arene)MCl2]2 with imino-quinolyl leads to formation cationic complexes [(arene)M(L)Cl]+ (1–12). Single crystal X-ray diffraction studies were used confirm coordination mode structures these complexes. molecular revealed that they adopt characteristic three-legged piano stool geometry metal coordinating through a terminal chloride in bidentate...