It was subsequently shown by De Deene " et al " in 2002 that other antioxidants could be used in the manufacture of normoxic gels including tetrakis ( hydroxymethyl ) phosphonium chloride, having first been suggested to Baldock by Billingham in 1996.
22.
Compared to the simpler pattern for triangular stamps in which all diagonal perforations are parallel to each other, the tetrakis pattern has the advantage that, when folded along any of its perforations, the other perforations line up with each other, making repeated folding possible.
23.
Palladium ( II ) acetate, tetrakis ( triphenylphosphine ) palladium ( 0 ) ( Pd ( PPh 3 ) 4, and tris ( dibenzylideneacetone ) dipalladium ( 0 ) ( Pd 2 ( dba ) 3 ) serve either as catalysts or as starting materials for catalysts.
24.
The tetrakis square tiling is an infinite arrangement of lines forming a periodic tiling that resembles a multigrid with four parallel families, but in which two of the families are more widely spaced than the other two, and in which the arrangement is simplicial rather than simple.
25.
A fourth isohedral deltahedron with the same face planes, also a stellation of the compound of three octahedra, has the same combinatorial structure as the tetrakis hexahedron but with the cube faces dented inwards into intersecting pyramids rather than attaching the pyramids to the exterior of the cube.
26.
"' Tetrakis ( triphenylphosphine ) palladium ( 0 ) "'( sometimes called quatrotriphenylphosphine ) is the chemical compound Pd [ P ( C 6 H 5 ) 3 ] 4, often abbreviated PPh 3 ) 4, or even PdP 4, as well as.
27.
A different form of the tetrakis hexahedron, formed by using taller pyramids on each face of the cube, is non-convex but has equilateral triangle faces that again lie on the same planes as the faces of the three octahedra; it is another of the known isohedral deltahedra.
28.
The halide ( Br, Cl ) or triflate is an aryl, benzyl, or vinyl compound and the alkene contains at least one hydrogen and is often electron-deficient such as acrylate ester or an acrylonitrile . The catalyst can be tetrakis ( triphenylphosphine ) palladium ( 0 ), palladium chloride or palladium ( II ) acetate.
29.
The materials required for the production of the nanoshells are the following; Tetraethyl orthosilicate, ammonium hydroxide, hydroxylamine hydrochloride, 3-aminopropyl tris, hydrogentetrachloroaurate ( III ) trihydrate, tetrakis ( hydroxymethyl ) phosphonium chloride, sodium hydroxide, potassium carbonate, ethanol, Ultrapure water and glassware washed in aqua regia and rinsed thoroughly in water . :)
30.
Since all the six-membered rings in C 80-I h are equal This is evidenced by the presence of only two signals in the 13 C-silyl group in a reaction of Ce 2 @ C 80 with 1, 1, 2, 2-tetrakis ( 2, 4, 6-trimethylphenyl )-1, 2-disilirane.
