Wittig reaction of 3-[4-(dimethylamino)phenyl]propanal (5) with (3-guaiazulenylmethyl)triphenylphosphonium bromide (4) in ethanol containing NaOEt at 25 °C for 24 h under argon gives the title (2E,4E)-1,3-butadiene derivative 6E in 19% isolated yield. Spectroscopic properties, crystal structure...

2-Phenyl-4-dimethylaminopyridine (dmappy) with high 3π-π∗ triplet energy is, for the first time, employed as the cyclometalating ligand for constructing cationic iridium complexes with tunable emission properties. Three complexes, namely, [Ir(dmappy)2(bpy)]PF6 (1), [Ir(dmappy)2(pzpy)]PF6 (2) a...

In a recent work we have reported an investigation of the applicability of ground state electron density inferred from X-ray diffraction to the determination of the linear polarizability of an ‘in situ’ conjugated molecule labelled POM and corresponding to a nonlinear optical organic compound ...

Three new nitrato copper(II) complexes of dimethyl substituted 4-nitropyridine N-oxide were synthesized and characterized by elemental analysis, magnetic, spectroscopic, thermal and X-ray methods, respectively. They were isolated as trans isomers, mononuclear (μ = 1.70–1.88 BM), five (1–2) an...

Three new complexes, products of the interaction of Cu(NO3)2 and methyl-substituted 4-nitropyridine N-oxides were synthesized and characterized by elemental analysis, magnetic, spectroscopic (IR, FIR and EPR), thermal and X-ray methods. The complexes (magnetic moments 1.70–1.81 BM at 300 K) of ...

The main purpose of this work, besides X-ray diffraction electronic density determination of a nonlinear molecular crystal, is to revisit the earlier Robinson model [Bell Syst. Tech. J. (1967) 913], which proposed to derive the nonlinear optical properties of molecule from its ground state charg...

X-Ray and neutron diffraction studies of 3-methyl-4-nitropyridine-N-oxide (3M4NPO) have been carried out at 106 K. 3M4NPO, C6H6N2O3 crystallizes in the orthorhombic space group P212121, a = 20.890 (6), b = 6.094 (3), c = 5.135 (3) Å and Z = 4. Refinements including isotropic extinction correctio...

A Raman study of 3-methyl-4-nitropyridine-N-oxide single crystal (3M4NPO) has been performed at 78 K in the range 10–3500 cm−1. The symmetry analysis of the vibrational modes of 3M4NPO is given. The assignments are presented for internal and external modes. The results of the Raman spectra exhi...

The infrared and Raman spectra of 3-methyl 4-nitropyridine N-oxide (POM) in its crystalline state and in various saturated solutions were recorded. They were assigned according to previous results for 4-nitropyridine N-oxide (NPO). The hydrogen bonds between a proton of a water or a methanol mol...

An electrostatic interaction scheme is applied to evaluate the macroscopic linear susceptibilities of 2-methyl-4-nitroaniline, m-nitroaniline, 3-methyl-4-nitropyridine N-oxide and 2-carboxylic acid-4-nitropyridine-1-oxide crystals. The molecular polarizabilities have been determined from first p...

In order to mitigate problems associated with highly sulfonated aromatic hydrocarbon membranes, such as dimensional stability, mechanical strength, and methanol crossover, sulfonated poly(ether ether ketone) (SPEEK) membranes containing 1,6-bis(4-vinylphenyl)hexane (BVPH) were crosslinked by EB ...

Formation of 3-[(carboxymethyl)thio]-3-(1H-imidazol-4-yl)propanoic acid (I) and S-[2-carboxy-1-(1H-imidazol-4-yl)ethyl]cysteine II, compounds found in human urinee, has been demonstrated by enzymatic degradation of S-[2-carboxy-1(1H-imidazol-4-yl)ethyl]glutathione (III). Compound (III) was chemi...

Three chiral metal–organic coordination polymers (CCPs) [Co(L)(bimb)] (1), [Cd(L)(bimb)] (2), [Zn(L)(bimb)] (3), (L = (R)-4-(4-(1-carboxyethoxy)phenoxy)-3-nitrobenzoic acid; bimb = 4,4′-bis((1H-imidazol-1-yl)methyl)-1,1′-biphenyl) have been successfully obtained via solvothermal reactions. Th...

A series of 4-(1H-benzo[d]imidazol-2-yl)-furazan-3-amines (BIFAs) were prepared in good yields (60–90% for each reaction step) via a novel procedure from aminofurazanyl hydroximoyl chlorides and o-diaminobenzenes. The synthetic sequence was run under mild reaction conditions, it was robust and ...

Retinoic acid (RA), the biologically active metabolite of vitamin A, is used medicinally for the treatment of hyperproliferative diseases including dermatological conditions and cancer. The antiproliferative effects of RA have been well documented as well as the limitations owing to toxicity and...

A new corrosion inhibitor namely, 2-amino-3-((4-((S)-2-amino-2-carboxyethyl)-1H-imidazol-2-yl)thio)propionic acid (AIPA) has been synthesized and its inhibition action on corrosion of mild steel in 1 M HCl has been investigated using Electrochemical impedance spectroscopy (EIS),Potentiodynamic p...

Reported in this work is the synthesis of HDA (hexadecylamine)-capped ZnS nanoparticles by a single source route using Zinc(II) N-ethyl-N-phenyldithiocarbamate as a precursor. By varying the growth temperature, the temporal evolution of the optical properties and morphology of the nanocrystals w...

Zinc (II) complexes of phenyl dithiocarbamate and para-methylphenyl dithiocarbamate ligands, represented as [Zn(S2CNHPh)2] and [Zn(S2CNHp-MePh)2], have been synthesized and characterized. The thermal properties and the ionic conductivity of the complexes were investigated using TG/DSC analysis a...

Organotin(IV) dithiocarbamate complexes have shown a large spectrum of biological activities, which includes antioxidants, anti-inflammatory, antimicrobial, antituberculosis, anticancer and antiviral. In this report, organotin(IV) dithiocarbamate complexes derived from N-methyl-N-phenyldithiocar...

The reaction of ammonium N-butyl-N-phenyldithiocarbamate with the chloride salts of platinum and palladium, at room temperature, leads to the formation of [PtL2] and [PdL2](L = N-butyl-N-phenyldithiocarbamate). These compounds have been fully characterized by elemental analysis, UV–vis, NMR and...