Metal nitrate

Hence dinitrogen tetroxide (sometimes mixed with an organic solvent) can be used to prepare anhydrous metal nitrates (many heavy metal nitrates are hydrated when prepared in aqueous solution, and they cannot be dehydrated without decomposition). 

Nitric acid is a strong monobasic acid, a powerful oxidising agent, and nitrates many organic compounds. Until the end of the nineteenth century, it was made by heating a metallic nitrate salt with less volatile concentrated sulfuric acid. Removal of the volatile nitric acid permits the reaction to go to completion. This method is still used for laboratory preparation of the acid. 

TBP), ( -C4HgO)2PO, forms with the neutral metal nitrates ... 

Example. The Pechini method for fuel cell electrode preparation. La, Ba, Mn niU ates - - CgHgO — citrate complex - - C2FI6O2 — gel. Metal nitrates are complexed with citric acid, and then heated with ethylene glycol to form a transparent gel. This is then heated to 600 K to decompose the organic content and then to temperatures between 1000 and 1300K to produce tire oxide powder. The oxide materials prepared from the liquid metal-organic procedures usually have a more uniform particle size, and under the best circumstances, this can be less than one micron. Hence these particles are much more easily sintered at lower temperatures than for the powders produced by tire other methods. 

The successful introduction of silver nitrate leads us to test other nitrates. In particular some transition metal nitrates have even lower melting temperatures (=55°C for cobalt nitrate). 

Unsubstituted positions inpolyfluonnated aromatics are nitrated under vigorous conditions 1,3 5-Tnfluorobenzene reacts with oleum and a metal nitrate at elevated temperature to provide l,3,5-trifluoro-2,4,6 tnnitrobenzene [11] (equation 12)... 

Alkali metal nitrates can be prepared by direct reaction of aqueous nitric acid on the appropriate hydroxide or carbonate. LiN03 is used for scarlet flares and pyrotechnic displays. Large deposits of NaN03 (saltpetre) are found in Chile and were probably formed by bacterial decay of small marine organisms the NH3 initially produced... 

Alkali metal nitrates are low-melting salts that decompose with evolution of oxygen above about 500 C, e.g. 

N2O4 has been extensively studied as a nonaqueous solvent system and it is uniquely useful for preparing anhydrous metal nitrates and nitrato complexes (p. 468). Much of the chemistry can be rationalized in terms of a selfionization equilibrium similar to that observed for... 

Such reactions provide an excellent route to anhydrous metal nitrates, particularly when metal bromides or iodides are used, since then the nitrosyl halide decomposes and this prevents the possible... 

The Raman spectrum of aqueous mer-cury(I) nitrate has, in addition to lines characteristic of the N03 ion, a strong absorption at 171.7 cm which is not found in the spectra of other metal nitrates and is not active in the infrared it is therefore diagnostic of the Hg-Hg stretching vibration since homonuclear diatomic vibrations are Raman active not infrared active. Similar data have subsequently been produced for a number of other compounds in the solid state and in solution. 

Uran-metail, n. uranium metal, -nitrat, n. uranium nitrate. 

A student is asked to identify the metal nitrate present in an aqueous solution. The cation in the solution can either be Na+, Ba2+, Ag+, or Ni24. Results of solubility experiments are as follows ... 

A slight but systematic decrease in the wave number of the complexes bond vibrations, observed when moving from sodium to cesium, corresponds to the increase in the covalency of the inner-sphere bonds. Taking into account that the ionic radii of rubidium and cesium are greater than that of fluorine, it can be assumed that the covalent bond share results not only from the polarization of the complex ion but from that of the outer-sphere cation as well. This mechanism could explain the main differences between fluoride ions and oxides. For instance, melts of alkali metal nitrates display a similar influence of the alkali metal on the vibration frequency, but covalent interactions are affected mostly by the polarization of nitrate ions in the field of the outer-sphere alkali metal cations [359]. 

Neonite. A fast burning, 30 grain, gelatinized smokeless powder introduced in 1907 by the New Explosives Co of Engl. It contains NC (insol) 73.0, NC (sol) 9.0, metallic nitrates 10.5, vaseline 5.9 moisture 1.6% (Ref 1)... 

Several lesser known nitrating agents, which have been used on a lab scale are metal nitrates in the presence of acetic acid or acetic anhydride, tetranitromethane and hexanitroethane in an alkaline medium, and nitroguanidine in soln in sulfuric acid, used for the nitration of aromatic... 

Nitron fonns v si sol compds with metallic nitrates, perchlorates, picrates, trinitrocresylates, as well as with organic nitrates such as NG,... 

In general, ammonia is evolved before anion breakdown in the decompositions of ammonium metal nitrates [960,961], Decomposition of hydrazonium nitrate [962] obeys second-order kinetics and presumably occurs in a melt. 

Anhydrous metal nitrates. C. C. Addison and N. Logan, Prep. Inorg. React., 1964,1,141-164 (62). 

Metal nitrates are sometimes used instead of halides. 

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