Lithium-chlorine

At 62% yield, the main product of the reaction of 42b with MeLi (molar ratio 1 5.5) was l,2-dichloro-2-methylbicyclo[2.1.1]hexane (66). Again, the most probable mechanism leading to 66 is addition of MeLi to carbene 54 (X=H, X=C1), followed by lithium chlorine exchange of the intermediate tertiary alkyllithium base 67 with the trichloride 42b. An alternative mechanism, addition of LiCl to carbene 54 and methylation of the intermediate carbenoid by MeLi, formed during the reaction from MeLi and 42b, is less probable.24... 

Fig. 8.9 Schematic diagram of a vertical experimental lithium-chlorine cell...

The remaining species present, M and X", are supporting electrolytes and are present as ions dissociated from the salt form of hgh, as products of the dissolved salt MX, or (in the case of X ) as counterions for H+. They are generic ions and were given equal diffusion coefficients in the range of the coefficients for diffusion of ionic sodium, lithium, chlorine, and bromine in water (8). The permeating species are hgh (represented as S), H+, M+ and X. The system is represented in Figure 2. 

TETRACHLOROVANADIUM (7632-51-1) Keep away from water (decomposes, producing heat and forming hydrogen chloride, vanadium trichloride, vanadium oxychloride), radiant heat, and flammable materials lithium, chlorine, and trifluoride. Decomposes slowly to vanadium trichloride and chloride. Fumes in moist air open containers in dry, oxygen-free atmosphere or in inert gas, wearing appropriate personal protective equipment. Chill to below 68°F/20°C before opening. Corrosive to metals, especially in the presence of moisture. 

EXPLOSION and FIRE CONCERNS not flammable, but may increase intensity of fire when in contact with combustible materials NFPA rating (not available) mixtures with calcium + sulfur + water may ignite spontaneously incompatible with lithium, chlorine trifluoride, and peroxyformic acid heating to decomposition emits irritating fumes of oxides of nitrogen use flooding quantities of water for firefighting purposes. 

Trichloro-2-thienyllithium prepared from tetrachlorothiophene by lithium-chlorine exchange (Bu"Li) reacted with aldehydes and ketones to generate carbinols. Treatment of the (2-hydroxymethyl) trichlorothiophene (406) with catalytic TsOH in refluxing benzene gave the electrophilic substitution product (407). Replacement of benzene with nitrobenzene as solvent led to... 

The splitting of the experimental band at 200 nm can be described by electronic transitions of 207, 210, and 219 nm in complex VI. Transitions between jt-orbitals of L and n -orbitals of the nucleotide base contribute to these frequencies. The electronic transition due to the transfer of electron density from lithium chlorine to U also contributes to the 210 nm frequency, while the transition between the occupied orbitals of the coordination bond N-I and unoccupied orbitals of I2... 

The lithium-chlorine battery is light in weight and is unsurpassed in the high level of energy (20 times that of the lead-acid battery) that can be achieved. One modification of this battery can be operated at temperatures around 350°C, but its wide application is again restricted by problems of corrosion. 

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