A5088374429- X-ray Diffraction in Crystallography
- Crystallization and Solubility Studies
- Crystallography and molecular interactions
- Organometallic Complex Synthesis and Catalysis
- Metal complexes synthesis and properties
- Coordination Chemistry and Organometallics
- Glaucoma and retinal disorders
- Crystal structures of chemical compounds
- Asymmetric Hydrogenation and Catalysis
- Ophthalmology and Visual Impairment Studies
- Retinal Imaging and Analysis
- Lanthanide and Transition Metal Complexes
- Magnetism in coordination complexes
- Corneal surgery and disorders
- Organometallic Compounds Synthesis and Characterization
- Catalytic Alkyne Reactions
- Cardiovascular Health and Disease Prevention
- Carbon dioxide utilization in catalysis
- Metal-Catalyzed Oxygenation Mechanisms
- Retinal and Optic Conditions
- Tuberculosis Research and Epidemiology
- Catalytic C–H Functionalization Methods
- Physics of Superconductivity and Magnetism
- biodegradable polymer synthesis and properties
- Organophosphorus compounds synthesis
King Faisal University
2019-2024
University Prep
2020
University of Bayreuth
2006-2019
Karachi Institute of Heart Diseases
2017
University of Peshawar
2009
Introduction: Cataracts and Glaucoma are the leading causes of irreversible blindness worldwide. Lens extraction using Phacoemulsification technique can be an effective IOP-lowering treatment for all types glaucoma.
 Objective: To study was to measure Intra-Ocular Pressure before after phacoemulsification determine mean change in Pressure.
 Methodology: This included 53 glaucoma patients with Primary Open Angle (POAG), Closure (ACG), Pseudoexfoliation (PXF) % (n=4) who visited...
The current research work presented the synthesis of carboxymethyl cellulose–gelatin (CMC/GEL) blend and CMC/GEL/ZnO-Nps hydrogel films which were characterized by FT-IR XRD, applied to antibacterial antioxidant activities for food preservation as well biomedical applications. ZnO-Nps incorporated into cellulose (CMC) gelatin (GEL) film-forming solution casting followed sonication. Homogenous mixing with CMC/GEL improved thermal stability, mechanical properties, moisture content neat films....
Abstract Aminopyridinato‐ligand‐stabilized organoyttrium cations are accessible in very good yield through alkane elimination from trialkyl yttrium complexes with sterically demanding aminopyridines, followed by abstraction of one the two alkyl functions using ammonium borates. At 80 °C and presence small amounts aluminum compounds, high ethylene polymerization activities observed if bulky aminopyridinato ligands used. During these polymerizations a reversible polyethylene chain transfer is...
Five organotin(IV) derivatives (1–5) of general formula R3SnL and R2SnL2, where R = C4H9 {1, 3}, CH3 {2 4}, C6H5 {5} L represents 4-fluorophenoxyacetate ligand were synthesized by the condensation reaction corresponding chloride sodium-4-fluorophenoxyaceate salt in dry chloroform under reflux condition. The elemental analysis has confirmed expected composition complexes. Δν values (less than 200 cm−1) calculated from FT-IR spectra revealed bridging/chelating bidentate coordination...
Give me five! Addition of alkynes as well dienes to a quintuply bonded dichromium complex was investigated and cycloaddition reactions were observed (see scheme). The structures the obtained compounds indicate reduction alkyne diene ligands, an oxidation chromium atoms, decrease CrCr bond order. Detailed facts importance specialist readers are published "Supporting Information". Such documents peer-reviewed, but not copy-edited or typeset. They made available submitted by authors. Please...
A series of mono(2-aminopyridinato)tris(dimethylamido) titanium complexes, ApTi(NMe2)3 (where Ap = 2-aminopyridinato), have been prepared via protonolysis, and their reactivity for the hydroamination primary aminoalkenes has explored. The Ti complex incorporating N,6-dimesityl-2-aminopyridinate as supporting ancillary ligand shown to yield a catalyst suitable room-temperature intramolecular reactions give gem-disubstituted five- six-membered-ring products. comparison with other group 4...
The low valent, coordinatively unsaturated, and formally quintuply bonded bimetallic aminopyridinato chromium complex 1 was investigated regarding its reactivity toward group 16 17 elements. Reaction of with O(2) yielded a dimeric Cr oxo 2, compound high formal oxidation state carrying both bridging terminal ligands. Reactions the higher homologues lead to formation Cr(II) complexes in which E(2)(2-) ligands were formed [E = S (3), Se (4), Te (5)]. Here dichromium unit undergoes an addition...
A quintuply bonded dichromium complex stabilized by aminopyridinato ligands activates CO2 and SO2 reducing the (formal) bond order of metal–metal bonds. Oxygen abstraction is observed during activation. activation proceeds via formation a unique dithionite complex/coordination. Furthermore, N2O was investigated tetrameric Cr–oxo observed.
Bedaquiline (BDQ) was initially only available through compassionate use programmes.To assess the effectiveness and safety of multidrug-resistant tuberculosis (MDR-TB) treatment containing BDQ.Retrospective analysis data from patients receiving BDQ in Armenia Georgia April 2013 to 2015. Logistic regression used risk factors associated with unsuccessful outcomes.Of 82 included, 84.2% (69/82) had fluoroquinolone-resistant MDR-TB 43.4% (23/53) were seropositive for hepatitis C virus (HCV). The...
Lithium-ion battery recycling includes discharging and processing exhausted batteries to recover valuable metals for reuse in new production. The improper disposal of e-waste draws attention the possibility reprocessing used lithium-ion make progress recovering metals. In this study, using biodegradable mixed organic acids, were extracted from by a hydrometallurgical process under optimal conditions such as stirring speed 200 rpm, acid concentration ascorbic acid/citric (AA/CA) 50:50 mM,...
Abstract The present work is aimed towards the synthesis of C–H activation products various group 3 and lanthanoid metals bearing a bulky aminopyridinato ligand, (2,6‐diisopropylphenyl)[6‐(2,6‐dimethylphenyl)pyridin‐2‐yl]amine ( 1 , Ap′H). Deprotonation using KH leads to polymeric [Ap′K] n 2 ), which undergoes clean salt metathesis reaction with MX [M = Sc, Nd Sm, X Cl or M La Br] forming mono thf adducts [Ap′ ScCl(thf)] LaBr(thf)] 4 NdCl(thf)] 5 SmCl(thf)] 6 ). However, reacting LuCl mono‐...
Abstract The reaction of ytterbium metal with the aminopyridines2,6‐(diisopropylphenyl)‐[6‐(2,6‐dimethylphenyl)pyridin‐2‐yl]amine ( 1 , Ap′H) and (2,4,6‐trimethylphenyl)‐[6‐(2,4,6‐trimethylphenyl)pyridin‐2‐yl]amine 2 Ap Me H) at elevated temperature under vacuum in presence mercury gave rise to divalent [Yb(Ap′) ] 3 ) trivalent [Yb(Ap 4 ), respectively. single‐crystal X‐ray structure analysis revealed a four‐coordinate atom two chelating (N,N′) Ap′ ligands inclined each other an angle...
Drug resistance in general, and multidrug-resistant tuberculosis (MDR-TB) particular, threatens global (TB) control efforts. Population-based estimates of drug are needed to develop strategies for controlling drug-resistant TB Pakistan.To obtain population-based data on Mycobacterium data, we conducted a study cases all provinces Pakistan. We performed culture susceptibility testing M. isolates from patients with prior history anti-tuberculosis treatment (retreatment cases) over the...
Biofilms are complex communities of microorganisms that enclosed in a matrix shows increased resistance to antimicrobial and immunological encounters. Mostly, the traditional methods control biofilm exhausted; therefore, aim is evaluate potential essential oil (EO) from Tagetes minuta encounter other related virulence factors. The EO T. was extracted through steam-distillation, analyzed on gas chromatography-mass spectrometry, inhibition assays were performed with various concentrations EO....
Abstract It is report on synthesis and structure of Ap*LaBr 2 (THF) 3 Am*LaBr (Ap*‐H = {(2,6‐diisopropyl‐phenyl)[6‐(2,4,6‐triisopropyl‐phenyl)‐pyridin‐2‐yl]‐amine}, Am*‐H N,N′‐bis‐(2,6‐diisopropylphenyl)benzamidine). X‐ray crystal analyses the two seven coordinated complexes were carried out to compare steric demand amido ligands. A similar overall primary coordination site bulkiness for both ligands distinct differences regarding this different directions observed. better shielding second...
Reaction of two equivalents the bulky 1,3-bis(2,6-diethylphenyl)thiourea ligand (
In this study, PMMA/ABS/CoCl2 ternary composite films were fabricated by the solution casting technique. The different weight ratios of cobalt chloride (≤10 wt) incorporated into PMMA/ABS blend (80:20). chemical structure and thermal properties synthesized composites assessed FT-IR, TGA, XRD. biological composites, such as in vitro antibacterial activity antioxidant capacity, investigated. enhanced stability promising antibacterial, selective antibiofilm, potential PMMA/ABS/cobalt...
Abstract Rare examples of amido‐iodo complexes selected divalent lanthanides can be synthesized by using deprotonated Ap*H {Ap*H = 2,6‐diisopropylphenyl)‐[6‐(2,4,6‐triisopropylphenyl)‐pyridin‐2‐yl]‐amine} as a stabilizing ligand. Reaction [Ap*K] n with [LnI 2 (thf) ] (Ln Eu, Yb, 4,5) in THF leads to [Ln(Ap*)I(thf) Yb). An attempted reduction these heteroleptic KC 8 synthesize containing an unsupported Ln–Ln bond resulted the formation [Ln(Ap*) ]. These lanthanide were characterized X‐ray...
An aminopyridinato ligand stabilized and coordinatively unsaturated dimeric tungsten(0) complex having an electronic structure with six metal centred HOMOs (σ2,π2,π2,δ2,δ2, δ*2) has been isolated structurally characterized. Its reaction a cryptand leads to C-H bond activation of one the isopropyl groups N-ligand form tungsten(i) complex.