The conversion of carbon dioxide (CO2) into valuable chemicals, specifically C2 and C3, through metal-free electrocatalysis remains a formidable challenge. Breaking away from traditional transition metal complexes, the focus is on designing selecting efficient organic catalysts. In this pursuit, diazo-based bulky ligand emerges as promising candidate, offering solution that both sustainable renewable. key feature its low-lying π* (LUMO), enabling it to readily accept an electron in...

Amino‐quinolines are potential candidates that may provide some insight into the current chemotherapeutic research due to their demonstrated anti‐cancer activity. This led us synthesize and explore a new amino‐azo‐quinoline ligand H2L 1 its square planar nickel(II) complexes [Ni(HL)(OAc)], 2 [Ni(HL)Cl], 3 structures were determined by SCXRD. Theoretical investigation of redox orbitals discloses reduction process is whereas both metal contributing towards oxidation. The properties one have...

Two π‐radical complexes containing bisazo‐aromatic‐centered radical anion (1•−) were synthesized through in‐situ electron transfer from metal‐to‐ligand using [IrI] and 2‐(2‐Pyridylazo)azobenzene (1) in inert hydrocarbon solvent. These are characterized as diradical [IrIII(1•−)2]+[2]+ monoradical [IrIII(1•−)Cl2(PPh3)] 3. In contrast, a rare metal‐mediated hydrolytic cleavage of the C(sp2)–N bond occurred protic solvent resulting quaternary complex [IrIII(1•−)(1′)(PPh3)]+(4)+. This provides an...

The reaction of [Os(H)(Br)(CO)(PPh3)3], 5, with 2-(phenylazo)pyridine (pap) in boiling dry heptane has afforded the azo anion radical complex [Os(pap.-)(Br)(CO)(PPh3)2], 6a, as major product and [Os(pap)(H)(CO)(PPh3)2]Br, 7, a minor byproduct. Upon replacing pap by better pi-acceptor azo-2,2'-bipyridine (abp) above synthesis, [Os(abp.-)(Br)(CO)(PPh3)2], 6b, becomes sole product. It is proposed that 6 formed via homolytic cleavage Os-H bond 5; formation Os-Br 5 heterolytically cleaved. X-ray...

Three different carboxylato bridges (R = C2H5, CF3, and PhCH2 in RCO2(-)) have been used to obtain the supramolecular aggregates [Ni5(μ-H2bpmp)2(μ3-OH)2(μ1,3-O2CC2H5)6]·2H2O·4DMF (1·2H2O·4DMF), [Ni4(μ3-H2bpmp)2(μ3-OH)2(μ1,3-O2CCF3)2](CF3CO2)2·H2O (2·H2O), [Ni4(μ3-H2bpmp)2(μ3-OH)2(μ1,3-O2CCH2Ph)2](PhCH2CO2)2·4H2O (3·4H2O) (H3bpmp =2,6-bis-[(3-hydroxy-propylimino)-methyl]-4-methyl-phenol) from hydroxido-bridged dinuclear motif [Ni2(μ-H2bpmp)(OH)](2+). These complexes characterized by X-ray...

Highly efficient Ni‐catalyzed C–N/C–C bond formation from amidines during the [3 + 2 1] annulation by primary alcohols alone or with secondary alcohols/phenyl acetylenes has been successfully accomplished toward scaled synthesis of s‐triazine and pyrimidines, respectively. A strongly π‐acidic bis‐azo NNN‐pincer scaffold was introduced for dual functionalization such as to augment sustainability molecular catalyst enhancing metal‐ligand integrity interposing a potent electron‐sink...

The anaerobic reaction of 1 (X = H, Cl) with 2 in heptane affords the green paramagnetic (S 1/2) and EPR-active (g 2.00) title complexes 3a H) 3b Cl), which furnish corresponding nonradical diamagnetic salts 3a+ PF6- 3b+ upon oxidation solution. In contrast, N-(p-tolyl)pyridine-2-aldimine (pal) [Ru(pal)(H)(Cl)(CO)(PPh3)]. X-ray structures have been determined.

The reaction of the dihydride [RuII(H)2(CO)(PPh3)3], 3, with excess azo-2,2'-bipyridine (abp) in boiling dry benzene has afforded diradical bischelate [RuII(abp.-)2(CO)(PPh3)], 4, and hydridic monochelate monoradical [RuII(abp.-)(H)(CO)(PPh3)2], 5. A similar between 3 2-(p-chlorophenylazo)pyridine (Clpap) did not yield a bischelate, but [RuII(Clpap.-)(H)(CO)(PPh3)2], 6, been isolated. Upon treatment 4-6 NH4PF6 wet dichloromethane-acetonitrile medium, one-electron-oxidized salts 4+PF6-,...

The 2-(phenylazo)azobenzene furnished novel palladacycles in excellent yield, which showed luminescence at rt and catalytic activity. optoelectronic electrochemical responses were substantiated with DFT TDDFT.

The reactions of 1-methyl-2-(p-chlorophenylazo)imidazole (L1) and 2-(phenylazo)pyridine (L2) with [Ru(H)(X)- (CO)(PPh3)3] (X = Cl, Br) have afforded the green paramagnetic (S ½) EPR-active (g ≈ 2.00) title anion radical complexes [Ru(L1·–)(Cl)(CO)(PPh3)2] 1 [Ru(L2·–)(Br)(CO)(PPh3)2] 2 in which N–N bond lengths lie near 1.35 Å.

Dinuclear (VIVVV) oxophenoxovanadates of general formula [V2O3L] have been synthesized in excellent yields by reacting bis(acetylacetonato)oxovanadium(IV) with H3L a 2:1 ratio acetone under an N2 atmosphere. Here L3- is the deprotonated form 2,6-bis[{{(2-hydroxybenzyl)(N',N'-(dimethylamino)ethyl)}amino}methyl]-4-methylphenol (H3L1), 2,6-bis[{{(5-methyl-2-hydroxybenzyl)(N',N'-(dimethylamino)ethyl)}amino}methyl]-4-methylphenol (H3L2),...

The ligating properties of alkyl 2-(phenylazo)phenyl thioether 1 (HL(R); R = Me, CH(2)Ph) toward Rh(III) have been examined. A novel hexacoordinated orthometalated rhodium(III) thiolato complex trans-[Rh(L)Cl(PPh3)2] 5 has synthesized from and RhCl(3).3H(2)O in the presence excess PPh(3) via situ C(sp(2))-H C(sp(3))-S bond scissions, which is first example for a coordination compound [L](2-). We were also able to isolate intermediate organothioether trans-[Rh(L(R))Cl(2)(PPh(3))] 6 with equiv...

The reaction between a potential flexidentate pyridyl-azo-oxime HL1 and Co(ClO4)2 yields novel homoleptic complexes of types [Co(III)(L(-I))3], 2 [Co(III)(L(-I))2]ClO4, 3⁺ClO₄ in N6 N4O2 coordination environments respectively. FMOs these vary appreciably are strongly modified by the environment. This has striking influences on spectral redox properties metallo conjugates ligand HL. synthesized bis tris chelates 3⁺ possess well-defined optoelectronic scrutinized density functional theory...

An attractive methodology, single-electron transfer (SET) reductive cleavage of the C-S bond mediated by a metal in presence external stimuli PPh3, has been applied to kinetically inert IrCl3 order synthesize thiolato complex [Ir(III)(L(S))Cl(PPh3)2] 3 from precursor thioether complexes [Ir(III)(L(SR))Cl2(PPh3)] (R = alkyl) 2. The aforesaid process association with (arene)C-H activation furnishes new class organosulfur compounds iridium(III). chelate displays reversible oxidative wave at...

Non-trivial coordination mode of symmetrical <italic>NNN</italic> ligands with Rh(<sc>iii</sc>) leads to redox-active <italic>NNO</italic>-scaffolds <italic>via</italic> C(sp²)–H oxyfunctionalization at rt, opening an opportunity juxtapose different domains.

The hydrogen bonded bis azo-oximato [IrCl2(LNOH)(LNO)] 2 and its deprotonated form (Et3NH)[IrCl2(LNO)2] (Et3NH)+3– have been isolated in the crystalline state by a facile synthetic method. azo-oxime frameworks 3– conveniently transformed to azo-imine reduction with NaBH4 or ascorbic acid. Notably, coordinated azo-imines accept an extra electron thereby furnishing radical anion complex 4. underlying reductive transformation can be best described proton-coupled transfer (PCET) process. Both...

Copper-catalyzed multicomponent reactions with sugar alkynes, sulfonyl azides, and amines to furnish glycosylated N-sulfonylamidines are reported. The reaction is established be general in terms of different combinations alkyne, azide, amines.

Abstract The blue coloured complex [Cu(HL)(H 2 O)(ClO 4 )]ClO ·H O·MeOH ( 1· H O·MeOH) has been synthesised in excellent yields by reacting Cu(ClO ) ·6H O with N , ‐bis(2‐methylpyridyl)(3,5‐dimethyl‐2‐hydroxybenzyl)amine (HL) methanol. same reaction, when carried out the presence of sodium azide, afforded a dark‐blue formula [Cu (μ‐1,1‐N 3 ](ClO ). crystal and molecular structures complexes have solved. Variable‐temperature magnetic susceptibility data range 2−300 K for reveal existence an...

Abstract: Objectives: Toxicity is an expression of being poisonous, indicating the state adverse effects led by interaction between toxicants and cells. The present study was designed to evaluate acute oral toxicity 28 days repeated Herbal Mixture (HM) according OECD guidelines. Materials Methods: In study, mixture administered at 2000mg/kg orally animals were observed for toxic signs 30 min, 1, 2 4 hr thereafter once a day next 14 days. dose-28-day divided into four groups 6 each. Group-1...