Trinitrato

Cobalt, trichlorotris(l,2-ethylenediamine)-conformation, 1, 197 Cobalt, (triethylcnetetramine)-isomerism, 1, 200,201 Cobalt, trinitrato-structure, 1,67 Cobalt, tris(acetylacetone)-structure, 1, 62,65,67 Cobalt, tris(bipyridyl)-structure, 1,64... 

Iron, trinitrato(dinitrogen tetroxide)-structure, 1,28 Iron, tris(acetylacetone)-electron recording system, 6,127 structure, 1, 65 Iron, tris(bipyridyl)-... 

When l,3r5-triazine is allowed to react with dinitrogen pentoxide and quenched with methanol the cis and trans isomers of 13 3-trinitro-2,4,6-trimethoxy-hexahy drotriazine are obtained. Nitration of the triazine in deuterated nitromethane at -10 °C affords the mixture of cis and trans 2,4,6-trinitrato-l,3,5-trinitro-hexahydro-13,5-triazines which are decomposed at room temperature . Hexahydro-13,5-triaryl-133-triazines cyclorevert upon exposure to HC1 gas to give solid arylmethylene iminium chlorides as new versatile reagents... 

Triaquo-triammino-cobaltic Chloride, [Co(NH3)3(H20)3]C13, is produced by dissolving trinitrato-triammine cobalt in water with the addition of a little acetic acid and allowing the liquid to stand for twenty hours. It is then cooled and treated with hydrochloric acid at 0° C., when a yellowish-red crystalline powder is precipitated. This is quickly separated from the mother-liquor and dried on a porous plate.2 Other triaquo-triammino-salts have been prepared. 

Dictiloro - aquo - triammino - cobaltic Chloride (Dichro -chloride), [Co (NH,)3H20.Cl 2]Cl, may be prepared from trinitrato-tri-ammine cobalt by treatment with concentrated sulphuric acid and subsequent treatment with concentrated hydrochloric acid, or from trinit.ro-triammino-cobalt on treatment with concentrated hydrochloric acid.2... 

A notable feature of this stereochemistry is that the dihedral angle between any two bidentate ligands is close to 90°.397 For example, in the above trinitrato complexes it is 88°. The three bidentate ligands can therefore be considered to form half an icosahedral [M(bidentate)6] unit (Section 2.9.2), whereas the three unidentate ligands form half an octahedral [M(umdentate)6] unit. 

The repulsion energy calculations also predict that each bidentate ligand will be unsymmetrically bonded, the capping atom experiencing more repulsion than the prismatic atom. This is experimentally observed (M—D)/(M—G) 1.05 for the above trinitrato complexes. 

The triacetate uranyl complex (24) is structurally similar to the trinitrate uranyl complex (6) (three bidentate ligands arranged equa-torially around the uranyl O—U—O axis). It was expected that the visible, near ultraviolet spectrum of the triacetate uranyl complex would be similar to the spectrum of U02(N03)3 as are the spectra of 1102(804)3, 1102(003)3 , and other uranyl complexes which apparently have the same structure (17). The absorption spectrum of uranyl acetate extracted into tri-n-octylamine in xylene from dilute acetic acid is different from the trinitrato uranyl spectrum. This indicates that the triacetate uranyl complex is probably not the species involved. By analogy to the uranyl nitrate system 14), formation of a tetraacetate uranyl complex might be expected. The purpose of this work is to determine the nature of the anionic hexavalent actinide acetate complexes and to identify the species involved in the amine extraction and anion exchange of the hexavalent actinides from acetate systems. 

---