Nitrate ammine

In the complex [Co(NH3)6]Cl3, the cation is [Co(NH3)6]3+, and it is named first. The coordinated ammonia molecules are named as ammine, with the number of them being indicated by the prefix hexa. Therefore, the name for the compound is hexaamminecobalt(III) chloride. There are no spaces in the name of the cation. [Co(NH3)5C1]C12 has five NH3 molecules and one CN coordinated to Co3+. Following the rules just listed leads to the name pentaamminechlorocobalt(III) chloride. Potassium hexacyanoferrate(III) is K3[Fe(CN)6j. Reinecke s salt, NH4[Cr(NCS)4(NH3)2], would be named as ammonium diamminetetrathiocyanatochro mate (III). In Magnus s green salt, [Pt(NH3)4][PtCl4], both cation and anion are complexes. The name of the complex is tetraammineplatinum(II) tetrachloroplatinate(II). The compound [Co(en)3](N03)3 is named as tris(ethylenediamine)cobalt(III) nitrate. 

Octammine-/Li-hydroxy[/Li-(peroxy-(9 (9 )]dirhodium(3+) perchlorate, 4138 Octaammine-/Li-hydroxy[-/Li-(superoxido-(9,(9 )]dirhodium(4+) nitrate, 4597 Oxybis(iV,iV-dimethylacetamidetriphenylstibonium) perchlorate, 3911 Pentaammineaquacobalt(III) chlorate, 4124 Pentaamminechlorocobalt(III) perchlorate, 4123 Pentaamminedinitrogenosmium(II) perchlorate, 4072 Pentaamminenitratocobalt(III) nitrate, 4207 Pentaamminenitrochromium(III) nitrate, 4233 Pentaamminephosphinatochromium(III) perchlorate, 4053 Pentaamminephosphinatocobalt(III) perchlorate, 4050 Pentaamminepyrazineruthenium(II) perchlorate, 1792 Pentaamminepyridineruthenium(II) perchlorate, 2048 Pentaamminethiocyanatocobalt(III) perchlorate, 0519 Pentaamminethiocyanatoruthenium(III) perchlorate, 0520 Perchloratotris(triethylphosphine)palladium(II) perchlorate, 3778 /Li-Peroxobis[ammine(2,2, 2"-triaminotriethylamine)cobalt(III)](4- -) perchlorate, 3591... 

Ephraim and Bolle 3 find that the stability of the ammines of general formula [M(NII3) ]R2 depends not only on the central atom but also on the anion. These influences oppose one another, and the stability of the whole molecule is therefore the resultant of the two influences consequently, very little parallelism may appear between analogous compounds. For instance, the temperatures of decomposition of the hexanunino-salts of nickel decrease in the order perchlorate, iodide, bromide, chlorate, nitrate, chloride, sulphate whilst in the ease of the liexammino-salts of zinc, the order for decreasing stability is iodide, bromide, chloride, perchlorate, sulphate, nitrate, chlorate. 

Hydrate Isomerism.—As its name implies, this depends on the position of water in the molecule, just as in the case of the acido compounds. If two or more molecules of water are present in a molecule of ammine, the water may be present within the co-ordination complex or outside of it. For instance, the compound Cr en2.(H20)2.Br3 exists in isomeric forms. It may have all the water within the complex, in which case the formula will be [Cr en2(H20)2]Br3. In solution the whole of the bromine is precipitated by silver nitrate. On the other hand, the compound may have one molecule of water in the complex and the other outside, in which case the formula is [Cr en2(IT20)Br]Br2.H20, and only two-thirds of the bromine are precipitated by silver nitrate. Another example of this kind occurs in the cobalt series chloro-aquo-tetrammino-cobaltic chloride, [Co(NTI3)4Cl.H20]Cl2, is violet in colour, and is isomeric with dichloro-tetrammino-cobaltie chloride monohydrate, [Co(N1I3)4CI2]C1.H20, which is green. 

Diammino-silver nitrate forms glistening rhombic or prismatic crystals which blacken on exposure to light. It is fairly stable, and may be heated to 100° C. without loss of ammonia. Further heating causes it to decompose, and finally to melt with evolution of nitrogen and ammonia, leaving a residue of metallic silver and ammonium nitrate. It is soluble in water, but partial dissociation takes place so that the solution is alkaline in reaction, and it therefore yields a precipitate of silver chloride and soluble chlorides. Certain of the metals—for example, zinc, cadmium, and copper—quickly reduce the ammine in solution to metallic silver. 

The only salt corresponding to the mercuro-ammines which seems capable of existence is the hydrazine derivative of mercurous nitrate, [Hg(N2II4)2]N03, prepared by Hoffmann and Marburg.2 The corresponding ammonia derivative has not been obtained. 

The resolution was carried out by means of d-bromo-camphor-sulphonie acid. The salts of the bromo-series are more easily resolved on account of the great difference between the isomeric d-bromo-camphor sulphonates. In both series the d-bromo-eamphor sulphonate of the d-isomer is more sparingly soluble. These active compounds are very stable, and aqueous solutions of the bromides of the bromo-ammine series may be kept for a considerable time at ordinary temperatures, and even on heating to boiling racemisation does not occur. If the bromine in the complex be removed by means of silver nitrate activity... 

Tetrammino-nickel Nitrate, [Ni(NH3)4](N03)2.H 0, is obtained by the addition of ammonia to a solution of nickel nitrate and the addition of alcohol to the well-cooled liquid. The precipitated ammine crystallises in large transparent octahedra of a blue colour. It decomposes in air with loss of ammonia, and falls to a bluish-white powder. On heating it melts, loses water and ammonia, leaving a residue of 1 Werner, Ber., 1914, 47, 3087. 

T rihydr azino - nickel Nitrate, [Ni(N2H4)3](N03)2.—Hydrazine may take the place of ammonia, yielding a derivative with properties resembling those of the ammines.5... 

The Ammines of Corps , Silver, and Gold—Ammino-derivatives of Cupric Sulphate—Hydroxylamine-derivatives of Cupric Sulphate—Cupro-ammino-sulphates—Ammino-salts of Cuprio Halides—Ammino-ouprous Halides— Ammino-derivatives of Silver Halides—Ammino-derivatives of Silver Nitrate —Ammino-derivatives of Gold Salts—Aurous Halides—Auric Halides— Derivatives of Auric Oxide, Auric Nitrate, Anrie Phosphate, Perohlorate— Derivatives of Mixed Salts. 

CA 35, 1636(1941)(Biasting expls contg AN and ammine complexes are prepd by interaction of inorg nitrates, other than those of alkali metals, with ammonia) 28)T.W, Hauff H.H.Holmes, USP 2,222,175(1940)... 

CA 351636(1941 )(Nonsetting expls obtained by coating AN grains with tetram-minezinc nitrate) 29)O.Schmitz-Dumont, ZElektrochem 47, 221-2(1941) CA 35, 5052(I941)(Interaction of Co and Cr ammines with alkali metal amides results in formation of Co and Cr amides) 30)W.V,Smith, CanP 401,643(1941) CA 36, 1744(1942)(Prepn of... 

Co(NH8) + is stable in aqueous solution whereas fCo(NH3)5 X)2+ Ihdeigoes moderately rapid substitution of water for the acid group X, f e rates of aquation reaction depends strongly on basicity of X-, for Sample, nitrate acetate is 103 1. The difference in behaviour between Cr(III) and Co(III) ammines may be due to necessity for energy of activation m the transition state for reaction with the latter. 

Complex salts contg ammine and nitrate groups 3C462... 

Most authorities attribute the discovery of the first metal ammine to Tassaert, a Parisian chemist about whom virtually nothing is known — not even his first name. In his short article12 he is identified only as Citoyen Tassaert — Citizen Tassaert. Some chemists imply or even openly state that Tassaert was the first to prepare hexaamminecobalt(III) chloride, [Co(NH3)6]C13, the parent compound from which all cobalt ammines may be considered to be derived. Yet he merely observed the brownish mahogany color of the solution formed when excess aqueous ammonia is added to a solution of cobalt chloride or cobalt nitrate, and he failed to follow up his accidental discovery. 

The chlorides of the other polyhasic ammine complexes with cobalt described in (II) may easily be prepared in solution by a similar procedure, but only the ethylenedi-amine compound can be directly isolated as a solid. The other chlorides must be made indirectly from the nitrates, bromides, or iodides of the respective series,... 

As the compound is unstable it loses water after a few months reverting to the chloropentammme chloride It is photosensitive, like the nitrate and all the other aquopent-ammine series of salts ... 

Three of the complexes contg ammine and nitrate groups have been recently prepd and investigated at the laboratory of Wasag-Chemie AG at Neumarkt by Preller (Ref). 

Copper (II) ammine Explosive Complexes. Following complexes are listed in Vol 1 of this Encyclopedia Copper (II) ammine Azides, p A280 (See also Ref, p 149) Copper (ll) ammine Bro-mates p A281(See also Ref, p 387) Copper (II) ammine Chlorates, p A281(See also Ref, p 334) Copper (II) ammine lodates, p A281 (See also Ref, p 428 Copper (II) ammine Nitrates, pp A280 (See also item listed below) Copper (ll) ammine Perchlorates, p A28l(See also Ref, p 340)... 

Copper (II) ammine Nitrates. Several complexes of general formula, Cu(N03)2-xNH3- yHzO, are listed in Ref 2, pp 179-82. Izzo (Ref 1, p 214) lists the following blue signal light compn contg one of the complexes K chlorate 53, "nitrato di rame ammonicale 26, charcoal 16 sulfur 5%... 

---