Zobrazeno 1 - 10
of 44
pro vyhledávání: '"Joseph I. Bullock"'
Autor:
Claire R. Whitaker, Angela F. Danil de Namor, J. L. Brianso, Angel Garcia, Jordi Rius, Jaime D. Cárdenas, Joseph I. Bullock
Publikováno v:
Polyhedron. 16:4323-4330
Complexes of ethylenediamine-N,N,N′,N′-tetraacetanilide (edtan, C34H36N6O14) with cobalt(II), nickel(II) and copper(II) in the solid state and in solution are reported for the first time. Thermodynamic data (stability constant, and derived Gibbs
Autor:
Joseph I. Bullock, M. Oulabi
Publikováno v:
Polyhedron. 14:219-222
Equilibrium constants (log10 β1) for the formation of nine-coordinate adducts of tetrakis(thenoyltrifluoroacetonato)uranium(IV), [U(TTA)4] have been determined for some imidazole and antipyrine derivatives in benzene solution in which [U(TTA)4] itse
Autor:
M. Oulabi, Joseph I. Bullock
Publikováno v:
Polyhedron. 12:1895-1900
Time-averaged chemical shifts in the 1H NMR spectra of aniline, pyridine and some derivatives, induced by coordination in 1:1 complexes to the paramagnetic 5f2 uranium(IV) as its complex with the thenoyltrifluoroacetonato anion [U(TTA)4], have been u
Effect of phytate on the in-vitro solubility of Al+, Ca2+, Hg2+ and Pb2+ as a function of pH at 37°C
Publikováno v:
Journal of the Science of Food and Agriculture. 67:507-509
The effect of phytate on the solubility of Al3+ and Pb2+ has been investigated in vitro at 37°C across the pH ranges 3–7 (Pb2+) and 2–5 (Al3+). For both ions minimum solubility was found when the initial metal ion: phytate ratio was in the range
Publikováno v:
Journal of the Science of Food and Agriculture. 63:261-263
The in vitro hydrolysis of phytate at 95·C across the pH range 1–12 is reported. The reaction is slow. The first order rate constant varied from 3·98 × 10−4 min−1 at pH 1 to 0·28 × 10−4 min−1 at pH 12 with a maximal value of 8·74 × 1
Publikováno v:
Inorganica Chimica Acta. 43:101-108
The crystal structure of an hydrated uranium(III) compound has been determined for the first time. Crystals of [NH4]U[So4]2·4H2O are monoclinic with a = 6.7065(2), b = 19.0328(6), c = 8.8305(3) A, β = 97.337(10°, z = 4 and space group P21/c. The s
Autor:
R.J. Hobson, Joseph I. Bullock
Publikováno v:
Inorganica Chimica Acta. 19:79-85
The preparation and properties of nickel(II) and cobalt(II) complexes of phenolates with 2-methoxy, 2-ethoxy, and 2,6-dichloro-substituents as adducts with pyridine, N,N,N 1 ,N 1 -tetramethylethylenediamine, and water are reported. The electronic spe
Publikováno v:
J. Chem. Soc., Dalton Trans.. :1536-1540
The title complex (1) is one product of the reaction between MoCl5, PMeCl2, and ButCl. It can also be prepared by direct reaction between MoCl5 and the phosphine. Crystals of (1) are trigonal, with unit-cell dimensions a=b= 9.760(2), c= 71.167(16)A,
Autor:
Fawzi H. Al-Dabbagh, Joseph I. Bullock
Publikováno v:
Inorganica Chimica Acta. 110:69-76
The uranium(IV) complexes [U(EDTA)(H2O)2], [U(HOEDTA)]+, and [U(DTPA)]− are well-formed in the pH fange 2–3 ([DTPA]5- = diethylenetriaminepentaacetate; [HOEDTA]3- N-(2-hydroxyethyl)ethylenediaminetriacetate). Of these, only [U(DTPA)]- is extr
Autor:
Joseph I. Bullock, Shahrara Afshar
Publikováno v:
Inorganica Chimica Acta. 38:145-149
The Schiff base, H 2 busalen, forms polymeric M 2 (busalen) 3 (M = Pr, Nd, Sm, Eu, Gd, and Ho) and monomeric M(busalen) 2 (M = Ce, Th, and U) complexes which are readily soluble in CDCl 3 , a properly conferred by the presence of the t-butyl groups.