Thiourea perchlorate

Braun, T., Farag, A. B. Reversed-phase foam-chromatography. Chemical enrichment and separation of gold in the tributyl-phosphate-thiourea-perchloric acid system. Anal. Chim. Acta 65, 115 (1973)... 

Tetrakis(thiourea)manganese(II) perchlorate, 1785 Triamminenitratoplatinum(II) nitrate, 4582 Triamminetrinitrocobalt(III), 4204... 

There are several compounds which have the formula MX(L) where X is a halide, thiocyanate, or less commonly, nitrate or perchlorate, and L is a neutral molecule containing one or more of the ligand atoms 0, N, and, in thiourea, S (see IV. 1). Usually they exist only in the solid state, and their formation may be correlated with one or more of the factors ... 

Oxetanes are much less susceptible to cleavage by nucleophiles than oxiranes, except in the presence of acids. Several types of acid-catalyzed nucleophilic reactions are described in the previous section, such as reaction of hydrogen halides to give 3-halogeno-1-propanols and various acid-catalyzed solvolysis reactions. Another example of this type is the reaction of thiourea with 2-alkyloxetanes in the presence of hydrochloric or perchloric acid to give excellent yields of 3-alkyl-3-hydroxybutylisothiouronium salts (equation 39) <67CR(C)(264)1309>. 

Spectrophotometric studies have been carried out on solutions of Pd11 containing thiourea in perchlorate, chloride, bromide and thiocyanate media,116 such solutions being of practical importance in the analytical chemistry of palladium.117... 

CA 20, 1141(1926)(Description of chlorate expls used in Russia) F)A.C.Scott Mexco, Ltd, BritP 248089(1926) CA 21, 652(1927) (Crysts of O-carrying substs, such as K chlorate are coated with synthetic resin such as may be formed from a phenol, a phenol formaldehyde, or from urea or thiourea. Other ingredients such as MNN, DNT, a perchlorate or woodmeal may be added) G)Dr. Roman, NC 3, l6l-3(1932)(Compn props of some chlorate... 

Tetrakis(2-methyltetrazol-5-yl)-hexaaza-l, 5-diene, 3008a 5,10,15,20-Tetrakis(2-nitrophenyl)porphine, 3901 Tetrakis(pentafluorophenyl)titanium, 3836 Tetrakis(pyrazole)manganese(II) sulfate, 3532 Tetrakis(pyridine)bis(tetracarbonylcobalt)magnesium, 3861 Tetrakis(thiourea)manganese(II) perchlorate, 1779... 

Only a few examples of this class of compounds containing divalent tellurium are known. The aryl tellurium nitrates and perchlorates have been isolated only in the form of their adducts with thiourea, triphenylarsine oxide, or as hetaryl A -oxidcs. 

Phenyl thiourea tellurium nitrate and perchlorate were isolated when nitric or perchloric acid were added to aqeuous solutions containing phenyl tellurium chloride and thiourea. 

Condensation of thioamides or thiourea with, -unsaturated ketones is a general method for the construction of the 1,3-thiazine skeleton . -Chlorovinyl ketones 343 and the thioamide 344 in the presence of perchloric acid give intermediate thioimidium salts 345, which cyclize to yield 1,3-thiazinium salts 346 (Scheme 160) <1982T937>. 

Other fuel-type additives were effective in promoting the deflagration of hydrazine perchlorate. Experiments have been performed with thiourea and naphthalene. The results of the deflagration experiments for preheated pure hydrazine perchlorate and for the hydrazine per-chlorate-fuel mixtures are summarized in Table III and Figure 2. The strands used were all pressed to about 95% of the crystal density—i.e., to a density of about 1.85 grams/cc. 

Flame temperature measurements by the sodium line reversal method were made with hydrazine perchlorate strands containing 2% thiourea and 2% sodium chloride. This amount of sodium chloride was necessary to achieve a sufficient intensity of emission of the sodium D-line for these experiments. It may be pointed out that in oxygen-rich, chlorine-containing flames such as this, the concentration of sodium atoms is decreased... 

Thermodynamic calculations for the composition containing 2% thiourea and 2% sodium chloride were made, and the theoretical flame temperature was found to be 2224° K. A series of measurements by the sodium line reversal method gave 2275 50° K. for the flame temperature. This is close enough agreement so that we feel that thermodynamic equilibrium is achieved in the flame, and the reaction products are as written above. This differs markedly from the results with ammonium perchlorate where a substantial fraction of the nitrogen was present as oxides of nitrogen even at elevated pressures (16). 

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