For this study, the synthesis of dandelion-like Co3O4 nanoflowers is presented via the straightforward solvothermal approach and specified by various analytical methods. Furthermore, electrochemical activity of dandelion-like Co3O4 nanoflowers and multiwall carbon nanotubes (MWCNT) concerning th...

The ultraviolet spectra and some other properties of products obtained by the action, on some commonly used barbituric acid derivatives, of different strengths of sulphuric acid at 100° have been studied. In this work the products examined included those which are not extracted into ether from ...

The partition coefficients between 0.001 M HCl and octan-1-ol at 25°C are reported for seventeen 5, 5-disubstituted 2-oxobarbituric acids (1). The mean deviation for duplicate values of the partition coefficients was ±0.56% (largest deviation ±0.008 log units). Both phases were analyzed and t...

Solubility-temperature dependence data for four 5,5-disubstituted barbituric acids in 0.001 M HCl are presented. The solubility data were fitted to the Valentiner equation by the method of multiple linear regression and by the sigma plot method. Curvature m van 't Hoff (reciprocal temperatu...

Tri-t-butylsilane has been prepared by treatment of t-butyllithium with HSiCl3 or HSiF3. Reactions of this compound with the halogens Cl2, Br2, I2, and the pentafluorides PF5 or SbF5 gave the expected tri-t-butylhalosilanes. With SO3 bis(tri-t-butylsilyl) sulfate is obtained via tri-t-butylsilan...

Tri-t-butylsilane reacts with di(t-butyl)mercury with loss of isobutane and formation of bis(tri-t-butylsilyl)mercury. Infrared, Raman, 1H NMR, and 13C NMR spectra are reported and compared with the spectra of bis(tri-t-butylsilyl)-cadmium.

Tri-t-butysilane has been synthesized in excellent yield from the condensation-reduction reaction of t-butyllithium on silicon tetrafluoride. The relative reactivity of this sterically crowded silane towards ozone, chlorine, and hydroxylion has been examined, relative to the behavior of less hin...

Under aprotic conditions, Cr(CO)5CNCCl3 (1) reacts with triphenylphosphine in the presence of aromatic aldehydes or ketones to give the α-chloroalkenylisocyanide complexes cis(Z)- and trans(E)-Cr(CO)5CNCClCRR′ {R = H, R′ = 4-C6H4F (7), 4-C6H4-CHC(Cl)NCCr(CO)5 (8)} and Cr(CO)5CNCClCR2 {CR2 = f...

A reactive blend of poly(lactic acid) (PLA) and a surface modified starch by silane coupling agent to achieve compatibility is proposed. A detailed structural analysis by using 1H–1H TOCSY NMR spectrum clarifies, for the first time, that chloropropyl trimethoxysilane (CPMS) forms covalent bonds...

Covalently assembled monolayers (CAMs) of Mg-porphyrazine complex on glass and silicon substrates were fabricated and employed as “Turn off” sensor for ppm level detection and degradation of a sulfur mustard analogue: 2-chloroethyl ethyl sulfide (CEES). The detection process was read-out optic...

A practical and general synthetic approach to a series of 4-aryl-but-3-en-1-ynes is described. In the presence of palladium complexes a variety of aryl bromides (or iodides) undergo coupling with two equivalents of trimethylsilylacetylene with the formation of (E)-4-aryl-1,3-bis(trimethylsilyl)b...

When solvolysis of the bromide Me3SiCH2CD2Br by aqueous methanol is allowed to proceed to about 50% completion, the recovered bromide contains Me3SiCD2CH2Br and Me3SiCH2CD2Br, in 12 ratio. This migration of the Me3Si group is consistent with a mechanism involving anchimerically assisted ionizati...

An unusual binuclear complex, Ru2(CO)4[μ-Me3Si-NSN-COSiMe3]2, is formed when bis(trimethylsilyl) sulfur diimide, S(NSiMe3)2, reacts with Ru3(CO)12 in boiling hexane. The X-ray structure analysis reveals a centrosymmetric molecule containing two [Ru(CO)2] units which are incorporated into a pent...

A series of donor–acceptor (D–A) alternating copolymers including P(2CNNDI-T), P(2CNNDI-TT), P(2CNNDI-BT), and P(2CNNDI-BDT) based on dicyanated naphthalene diimide (2CN-NDI) in backbones were presented and characterized in this contribution. Their structures were unambiguously identified by N...

Reactions of bis[bis(trimethylsilyl)amido] zinc with amides of sulfonimidic acids are leading to the corresponding bischelate complexes 1–3. Compounds 1–3 were characterized by means of NMR spectroscopy and elemental analysis. The X-ray analysis of [p-MeC6H4S(O)(Nt-Bu)2]2Zn (3) demonstrates a ...

We report electronic polarization spectroscopy of aluminum phthalocyanine hydroxide embedded in superfluid helium droplets orientated by a DC electric field. By monitoring the laser induced fluorescence as a function of the polarization direction of the excitation laser, we conclude that the tra...

This study investigated the activity of photosensitive phthalocyanines on promastigotes and amastigotes of Leishmania (L.) amazonensis. Aluminum phthalocyanine chloride (AlPcCl), Aluminum phthalocyanine hydroxide (AlPcOH) and zinc phthalocyanine (PcZn) were tested in the presence (matte red LED,...

For developing intramolecular charge transfer (ICT) chemosensors for low pH values, 2-{2-[4-(dimethylamino)phenyl]-6-methyl-4H-pyran-4-ylidene}malononitrile (DPM) was designed and synthesized. The spectroscopic and pH-sensing properties of DPM were investigated by UV–Vis and fluorescence spectr...

The fluorescence properties of methyl 4-(N,N-dimethylamino)benzoate in a variety of solvents are reported. “Normal” fluorescence from a distribution of excited solute/solvent arrangements is observed in most solvents. Additionally, in acetonitrile, a longer wavelength fluorescence band is obse...

Two groups of the formulae, 4-(4′-hexyloxy)phenylazo-2-(and 3)methyl phenyl-4″-substituted benzoates (Ia–e and IIa–e) were prepared and investigated for their mesophase behavior. Each group consists of five derivatives that differ from each other by the terminal polar substituent X which var...