52 resultados para BIS(PHTHALOCYANINATO)TERBIUM
em Deakin Research Online - Australia
Resumo:
New α,ω-bis(trichlorostannyl)alkanes, Cl3Sn(CH2)nSnCl3 [n = 3-5, 8], have been synthesized via tin-phenyl bond cleavage reactions on α,ω-bis(triphenylstannyl)alkanes, Ph3Sn(CH2)nSnPh3 [n = 3-5, 8], using either SnCl4 or concentrated hydrochloric acid. Some key missing links, (H2O)Cl3Sn(CH2)3SnCl3(H2O) (1a) and (H2O)2Cl3Sn(CH2)3SnCl3(H2O)2 (6), in the hydrolysis pathway of organotin trichlorides were identified. Crystal structures of the nonassociated di-tin compounds (H2O)Cl3Sn(CH2)3SnCl3(H2O) (1a) and (H2O)2Cl3Sn(CH2)3SnCl3(H2O)2 (6, isolated as the 18-crown-6 cocrystal acetonitrile solvate) as well as the polymeric hydrolysis product [H2O(OH)Cl2Sn(CH2)3SnCl2(OH)H2O·2H2O]n (7·2H2O) are reported.
Resumo:
The reactions between X3Sn(CH2)nSnX3 (X = Cl, Br; n = 1, 3, 4, 8) and halide in solution are described. 119Sn NMR spectroscopy (CD2Cl2) indicates formation of five-coordinate dinuclear 1:2 adducts, [X4Sn(CH2)nSnX4]2-, with chloride and bromide. A trigonal-bipyramidal geometry has been confirmed in the solid state for the compound having X = Cl and n = 4. In contrast, fluoride reacts with X3Sn(CH2)nSnX3 to give six-coordinate tin species, [F5Sn(CH2)nSnF5].4- There was no evidence indicating that the tin atoms could act as a bidentate acid.
Resumo:
This paper describes, for the first time, a simple and effective synthetic route for covalently bonding the chemiluminescence reagent, (4-[4-(dichloromethylsilanyl)-butyl]-4’-methyl-2,2’-bipyridyl)bis(2,2’-bipyridyl)ruthenium(II) onto silica particles. The subsequent preparation of chemically regeneratable detection cells and their preliminary analytical evaluation with both sequential injection analysis and flow injection analysis are also reported. Unoptimised analytical figures of merit were established for standard solutions of codeine and sodium oxalate with detection limits calculated from three times the standard deviation of the blank signal, of 1 × 10–8 M and 3 × 10–7 M respectively. The chemically immobilised reagent exhibited some intriguing solvent and kinetic effects, which are also briefly discussed.
Resumo:
The title compound was prepared by base hydrolysis of (p-MeOC6H4)2SeCl2 in water and isolated as the crystalline monohydrate, (p-MeOC6H4)2SeO·H2O, in which the water molecule is associated via hydrogen-bonding. Water-free (p-MeOC6H4)2SeO was obtained crystalline after drying and recrystallisation from toluene. Both crystal phases were investigated by single crystal X-ray diffraction. Preliminary DFT calculations at the B3LYP/LANL2DZdp level of theory suggest that the hydrogen bonded complexes R2SeO·H2O (R = H, Me, Ph) are by 2.79, 3.36 and 11.10 kcal mol-1 more stable than the corresponding elusive diorganoselenium dihydroxides R2Se(OH)2. The hydrogen bond energies of R2SeO·H2O (R = H, Me, Ph) are 5.98, 7.18 and 5.89 kcal mol-1.
Resumo:
The Ni atom in the linear polymeric title complex, {[Ni(C11H17OS2)2(C10H8N2)]·2CHC13}n or {Ni[S2C(-)-OC10H17)]2(NC5H4C5H4N)·2CHC13}n, is octahedrally coordinated within a trans-N2S4 donor set. There are two crystallographically independent polymers and two independent CHC13 molecules in the structure. For each polymer unit, the Ni atom and the axis of the 4,4'-bipyridine ligand are located on a twofold axis.
Resumo:
The synthesis, characterisation and polymerisation studies of a homologous series of α,ω-bis(pyrrolyl)alkanes are described. These α,ω-bis(pyrrolyl)alkanes were produced using Friedel–Crafts acylation followed by reduction of the carbonyl group using Red-Al®. Chemical polymerisation of the resultant dimers using FeCl3 produced poly(α,ω-bis(pyrrolyl)alkane) films, which were characterised by SEM, FTIR and tested for conductivity.
Resumo:
Cross-linked poly(α,ω-bis(3-pyrrolyl)alkanes) were directly applied to woven wool substrates by either chemical, vapour or mist polymerization methods. Choice of dopant could greatly improve the surface resistance. The optimum coating on textiles with the lowest surface resistance, highest colour-fastness and stability was achieved using a mist polymerization method with 1,8-bis(pyrrolyl)octane, iron(III) chloride (FeCl3) as the oxidant and p-toluene sulfonic acid sodium salt (pTSA) as the dopant.