Sulfides, atmosphere

The parent hexathiaadamantane (185) is obtained preparatively when a solution of formic acid and hydrochloric acid in nitrobenzene is allowed to stand for several weeks in a hydrogen sulfide atmosphere the product which separated is almost insoluble in all common solvents and purification presents a problem. Only large volumes of dimethyl sulfoxide at reflux serve for recrystallization.224 The reaction of thioacetic acid with formic acid in the presence of zinc chloride gives tetramethyl-(186), monomethyl-, dimethyl-and trimethylhexathiaadamantane derivatives (187).225 Other variations include the reaction of thioacetic acid with a /i-diketone,226 and the use of boron trifluoride227 or aluminum chloride as a catalyst.228... 

The sequelae of acute poisoning appear to be quite variable and depend on duration of exposure as well as level of exposure. Patients who have been unconscious in high levels of hydrogen sulfide atmosphere for longer than 5 min may have persistent neurological and neuropsychological impairment years after exposure as a result of hydrogen sulfide-induced hypoxia. ... 

The general possibility of sugar fermentation in the presence of hydrogen sulfide, even in a hydrogen sulfide atmosphere, was recognized at an early date. ... 

Fig. 12. STM image of M0S2 nanoclusters synthesized on a Au(l 1 1) surface at 673 K in a sulfiding atmosphere. The size is 744Ax721A. Reprinted with permission from Reference (US ). Copyright (2000) by the American Physical Society.

In addition, thienothiophene 121 was synthesized by gas-phase pyrolysis of benzotrichloride at 400 °C in a hydrogen sulfide atmosphere (67% yield) (83ZOR1079). 

Watson, W. W. (1924) Sp>ectrum of water vapKJur. Astrophysical Journal 60, 145-158 Watts, S. F. (2000) The mass budgets of carbonyl sulfide, dimethyl sulfide, carbon disulfide and hydrogen sulfide. Atmospheric Environment 34, 761-779 Wayne, R. R, I. Barnes, J. P. Burrows, C. E. Canosa-Mas, J. Hjorth, G. Le Bras, G. K. Moortgat, D. Perner, G. Poulet, G. ResteUi and H. Sidebottom (1991) The nitrate radical Physics, chemistry, and the atmosphere. Atmospheric Environment 25A, 1-203 Wayne, R, P, (1994) Singlet oxygen in the environmental sciences. Research on Chemical Intermediates 20, 395-422... 

Fe(CO)5 is prepared by the direct reaction of activated iron with carbon monoxide as shown in eq. (15.1). Activated iron is obtained by the reduction of Fe2(CO)9 or Fc203 with hydrogen or by concussion of iron powder in a heptane solution under hydrogen sulfide atmosphere [7]. 

Procedure. One drop of the test solution is placed on filter paper and exposed to a hydrogen sulfide atmosphere for about 30 seconds. The spot is thoroughly washed and then developed. 

CoCrlnS Fd3m 0=10.291 Z=8 Spinel-type (inverse). X, powder. Ground stoichiometric mixtures of InjOj, CrjOj and CoO heated at 1000°C for 24 h in a hydrogen sulfide atmosphere. 74Miml ... 

Ground stoichiometric mixtures of InjOs, CrjOj and FeO heated at 1000°C for 24 h in a hydrogen sulfide atmosphere. 

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