Dinitrato

Increased interest in the chemistry of ylides has produced X-ray structures for compounds 123 (R = OMe) (91T5277) and 138 (92H(34)1005), while possibilities of complex formation have led to structures for bidentate copper complex of 135 (94JCS(D)2651), monodentate copper complex of the 3-phenyltria-zolopyridine 139, monodentate (through N2) dinitrato ligand of 3-methyl-triazolopyridine 140 (99MI4), and dinitrato bidentate copper complex of... 

An improvement in M2 propint is offered by the work of Kuhn and Duckworth of BRL (Ref 2). By incorporating independently several diazidodinitrates viz, 2,3-Diazido-l, 4-Dinitrato-butane and 3,3-Diazido-2,4-Dinitratopentane, they obtd pro pint films that compare favorably with M2 propint but have lower flame temps (see tabulated data below). See also Organic... 

Calcium, tetrakis(methanol)dinitrato-structure, 1, 89 Calcium alkoxides synthesis, 2, 336... 

Of the reaction steps, only the first three have values of AG° > 0 however, the large negative value of the fourth step makes the overall reaction AG°x negative, thus favoring the extraction of the complex. The first step can be measured by the determination of the dinitrato complex in the aqneons phase. The second is related to the distribution constant A btbp in the solvent system. Also, the formation constant of the aqneons U02(N03)2(TBP)2 can be measnred (for example by NMR on P of TBP in the aqneons phase). Thns, AG can be derived. 

The trans-salts are readily soluble in water, and are prepared by the action of concentrated aqueous ammonia or liquid ammonia on dinitrato-diethylenediamino-eobaltic salts. 

Trans-diethylenediamino-diammino-cobaltic Nitrate, [Co en2 (XH3)2](N03)3, is formed when 1-, 2-dinitrito-diethylenediamino-cobaltic nitrate, [Co en2(N02)2]X03, is heated with nitric acid. It is first converted into the dinitrato-sait, which separates in dark red triclinie crystals. This then reacts with liquid ammonia, forming diethylene-diamino-diammino-eobaltic nitrate together with a small quantity of the ci.s-salt. The nitrate forms a red viscid syrup which is soluble in water and on the addition of potassium iodide yields the iodide, which separates from hot -water in small orange-yellow crystals or refractive rhombic plates. 

Cis-dinitrato-diammino-platinum, [Pt(NH3)2(N03)2], is produced by acting on the dichloro-eompound with silver nitrate. It is a yellow powder. 

Dinitrato - tetrammino - platinic Chloride, [Pt(NH3)4(N03)2] C12.H20, is prepared by treating a boiling solution of hydroxo-nitrato-tetrammino-platinic nitrate, [Pt(NH3)4(0H)(N03)](N03)2, with hydrochloric acid. It separates as a white crystalline powder which may be reerystallised from water in large rhombic crystals. It is soluble in cold water, and loses water of hydration on heating to 100° C. Chlorine is completely precipitated by silver nitrate it therefore differs in this respect from the nitrate of dichloro-tetrammino-platinic series, with which it is isomeric. 

Dichloro-dinitrito-diammino - platinum, [Pt(NH3)2Cl2(N02)2], is obtained as a soluble crystalline substance on warming a concentrated solution of dinitrato-mtrito-triamniino-platinie nitrite, [Pt(NH3)3 (N03)2(N02)](N02), with excess of hydrochloric acid. 

Ethanohydroxyacetamide and derivs 6 El83 N-ethanolhydroxyacetamide dinitrato 6 El83... 

Reaction with N03 yields an aqua nitrato complex (structure IX), and Kx =0.022 M 2 (25°C, 2 M NaN03) has been determined spec-trophotometrically. At very high nitric acid concentration, evidence for another nitrato complex has been obtained and a /i-amido-/i-nitrato complex is considered more likely than, e.g., a dinitrato complex (385). 

Alyea, E.C., Dias, S.A., Ferguson, G. and Restivo, R.J. (1977) Structural studies of steric effects in phosphine complexes. Synthesis and crystal and molecular structure of the dinitrato (tricyclohexylphosphine)mercury(II) dimmer. Inorg. Chem., 16, 2329. 

No corresponding dinitro complex is known, but two routes have been discovered to the dinitrato complex [Rh(N0)(N03)2(PPh3)2] (equations 309 and 310).,330,1M1... 

The reaction with molecular oxygen gives an jj -peroxy complex, [Pt(jj -02)(PPh3)2], in which the oxygen is reactive, and the complex can oxidize PPhs, RNC, and alkenes to OPPh3, RNCO, and the epoxide. SO2, NO2, NO, and CO2 react to give the sulphate, dinitrato, dinitro, and carbonate complexes. The dioxygen complex is planar and seems to have substantial Pt character. ... 

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