As a continuation of our studies devoted to the vibrational and bond properties of molecules and ions containing interhalogen or halogen-oxygen bonds we have now performed an analysis of the bond characteristics of chlorine trifluoride oxide (chlorosyl trifluoride, F3ClO), through a calculation of its mean amplitudes of vibration from spectroscopic data. The interesting F3ClO molecule has been ...

diels–alder [2+4] cycloaddition products of the reaction between c20 and c4h4x2 or c2o2x2 (x = h, f, cl, ch3, nh2, no2, and oh) were studied atb3lyp level of theory with 6-31g, 6-31g(d, p) and 6-311g(d, p) basis sets. the homo–lumo gaps of kohn–sham orbitals for most of the adducts show evident increase compared with the gap value of c20, suggestive of more stability in the adducts. the thermod...

Abstract Fluorine (F) and chlorine (Cl) are important volatiles in olivine its high-pressure polymorphs, which would significantly affect phase transition, melting temperature, physical property of the mantle. F Cl concentrations can be detected by electron probe microanalysis (EPMA). However, analytical accuracy precision impeded severe peak overlaps, low intensities traditional crystals, seco...

Let X be a completely regular Hausdorff space, E a Hausdorff topological vector space, CL(E) the algebra of continuous operators on E, V a Nachbin family on X and F ⊆ CVb(X,E) a topological vector space (for a given topology). If π : X → CL(E) is a mapping, consider the induced multiplication operator Mπ : F → F given by Mπ(f)(x) := π(x)f(x), f ∈ G, x ∈ coz(F). In this paper we give necessary a...

current researches have showed that n3, n5-diaryl-2, 6-dimethyl -1, 4-dihydropyrine-3, 5- dicarboxamide analogues demonstrate notable anti-tubercular activity. in this study, hantzsch condensation was used to design and synthesize new analogues of dihydropyridine (dhp). different diary carboxamides were inserted at positions 3 and 5 of the dhp ring. 4(5)-chloro-2-ethyl-5(4)-imidazolyl moiety wa...

Transepithelial secretion in Malpighian tubules of the yellow fever mosquito (Aedes aegypti) is mediated by active transport of Na(+) and K(+) through principal cells and passive Cl(-) transport through the shunt. Permeation through the shunt was assessed by measuring transepithelial halide diffusion potentials in isolated perfused Malpighian tubules, after first inhibiting active transport wit...

An open (resp., closed) subset A of a topological space (X, T ) is called F-open F-closed) set if cl(A)\A A\int(A)) finite set. In this work, we study the main properties these definitions and examine relationships between F-closed sets with other kinds such as regularly open, closed, sets. Then, establish some operators F-interior, F-closure, F-derived...etc., using At end introduce F-continuo...

Based on the calculated electric field gradient (q) from ab initio Cl wavefunctions with large basis set (including / functions on N and d functions on H) and the experimental nuclear quadrupole coupling constant (e Q q) for nitrogen in N H 3, an improved value o f the quadrupole moment o f l4N is proposed as Q ('4N ) = 2.08 x 10~ 26 cm2. The value calculated using a wavefunction near the Hartr...