Excited State Properties of Myochrysin and Auranofin
نویسندگان
چکیده
Z. Naturforsch. 51 b, 1067-1071 (1996); received March 8, 1996 Myochrysin, Auranotin. Gold(I) Complexes, Photochemistry, Luminescence Myochrysin (sodium aurothiomalate hydrate) and auranofin [2,3.4,6-tetra-O-acetyl-l-thio-ßD-glucopyranosato-S)(triethylphospine)gold(I)] are luminescent in the solid state and in ethanol glasses at 77 K (myochrysin: Amax = 600 nm; auranofin: 618 nm). Aqueous myochrysin and auranofin in acetonitrile undergo a photodecomposition. It is assumed that the luminecence originates from a metal-centered ds excited state with partial ligand-to-metal charge transfer (LMCT) character while the photodecomposition is induced by LMCT excitation.
منابع مشابه
Microscopic Parameters in the Excited State of Toluene and Some of Its Haloderavatives
The Ultraviolet-visible (UV) spectra of toluene, ortho-bromo and para-bromo toluene in different solvents have been studied. The electric dipole moments and polarizabilities in the molecular excited electronic states were determined. It was found that the electric dipole moments for the excited states (µ*) and the ground states (µ) of these compounds are equal, and the change in dipole moment i...
متن کاملExcited States of Gold(I) Compounds, Luminescence and Gold-Gold Bonding
It has long been established by Khan that the superoxide anion, O(2) (-), generates singlet oxygen, O(2) (1)Delta(g), during dismutation. Auranofin, gold-phosphine thiols, beta-Carotene, and metal-sulfur compounds can rapidly quench singlet O(2). The quenching of the O(2) (1)Delta(g), which exists at 7752 cm(-1) above the ground state triplet, may be due to the direct interaction of the singlet...
متن کاملExcited-State Parameters of One Intramolecular Cyclization by TD-DFT, CIS and ZINDO Methods
Using a time-dependent-density functional theory (TD-DFT), Configuration Interaction Singles (CIS) and Zerner’s Intermediate Neglect of Differential Overlap (ZINDO) methods, we have investigated the UV-Visible spectra of one new intramolecular cyclization at before and after intramolecular attack. All structures were optimized at the B3LYP/6-311++G** level while UV-Visible parameters were calcul...
متن کاملStudy of Oral Gold ( Auranofin ) in Treatment of Iranian Patient with Rheumatoid Arthritis (RA). Preliminary Report of 6 Months Treatment
28 patients with classical / definite RA entered to a prospective open study evaluating efficacy and side effects of Auranofin. 21 patients completed 6 months of therapy with 6 mg Auranofin daily. Parameters of disease activity including Joint Tenderness Score, Joint Swelling Score, Walking Time and duration of Morning Stiffness improved significantly after 6 months (p<0.001). Grip strength, Su...
متن کاملمقدمهای بر سیستمهای اسپینی کوانتمی
This manuscript is the collection of lectures given in the summer school on strongly correlated electron systems held at Isfahan university of technology, June 2007. A short overview on quantum magnetism and spin systems is presented. The numerical exact diagonalization (Lanczos) alghorithm is explained in a pedagogical ground. This is a method to get some ground state properties on finite clus...
متن کامل