Electronic spectra ethers

Octamethyltetrabenzoporphinato(2-)]cobalt(Il) is a green-blue powder that is stable towards atmospheric oxidation in the solid state. The compound is readily soluble in pyridine bases and tetrahydrofuran, and to a lesser extent in diethyl ether, benzene, ethanol, and acetone. The electronic spectrum in pyridine shows bands at 320 (e = 13,200), 455 (e = 71300), and 645 nm (e = 36,700). 

Dilithium phthalocyanine is obtained as dark-blue crystals. The compound has high thermal stability, as is typical of many phthalocyanines. It is soluble in acetone, giving a deep-blue solution that deposits phthalocyanine when in contact with even trace amounts of water. The material is also soluble in ethanol and tetrahydrofuran, but it is insoluble in diethyl ether, hexane, or chloroform. Solutions of the dilithium complex in ethanol react rapidly and quantitatively with a variety of metal salts to give the metallophthalocyanines, which precipitate, in very pure form, from solution. The electronic spectrum contains the bands (acetone solution) 370 (e = 24,800), 596 (e = 17,300), 630 (e = 16,100), 655 nm (e = 11,100). 

This square planar nickel(ll) complex is stable in air in the solid state, but solutions of the complex react in air to produce oxidation products of unknown composition. For this reason, manipulations of the complex are best performed in an inert atmosphere. The complex is a nonelectrolyte and is soluble in most common organic solvents, including diethyl ether, but not in water. The infrared spectrum of the complex contains an intense broad band in the double-bond region centered at 1610 cm. The electronic spectrum of a solution of the compound in toluene contains several bands 17.9 (e = 107), 23.0 (e 1600), 24.5 (e 4600), 25.9 (e 2700), and 29.4 kK (e 5500). The PMR spectrum of the complex in CDCI3 contains four bands as expected singlet methyl at 5 1.88, methylene at 6 3.13, vinyl doublet at 6 4.51, and a second vinyl doublet at 5 6.63. The vinyl protons of the charged chelate ring are coupled, J = 3 Hz. 

Contents Theory of Electrons in Polar Fluids. Metal-Ammonia Solutions The Dilute Region. Metal Solutions in Amines and Ethers. Ultrafast Optical Processes. Metal-Ammonia Solutions Transition Range. The Electronic Structures of Disordered Materials. Concentrated M-NH3 Solutions A Review. Strange Magnetic Behavior and Phase Relations of Metal-Ammonia Compounds. Metallic Vapors. Mobility Studies of Excess Electrons in Nonpolar Hydrocarbons. Optical Absorption Spectrum of the Solvated Electron in Ethers and Binary Liquid Systems. Subject Index. Color Plates. 

Dorfman L.M., Jou F.-Y., Optical absorption spectrum of the solvated electron in ethers and in binary liquid systems, in "Electrons in fluids", Jortner J., Kestner N.R. (eds). Springer, New York, 1973,... 

The electronic spectrum of lithium polyisoprenyl in diethyl ether changes at higher concentration of the salt, > 10-3 M. Apparently the ion-pairs associate in this medium into higher aggregates and the concomital decrease of their reactivity implies a lower reactivity of the aggregates, a conclusion made previously by Sinn4065. 

There are also certain other facts which appear to demand such a modification of Dalton s Atomic Theory as is found in the Electronic Theory. One of the characteristics of the chemical elements is that each one gives a spectium peculiar to itself The spectrum of an element must, therefore, be due to its atoms, which in some way are able, at a sufficiently high temperature, to act upon the ether so as to produce vibrations of definite and characteristic wave-length. Now, in many cases the number of lines of definite wavelength... 

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