Endor spectrum and heat of dissociation of the 9,10-dipropylanthracene dimer cation

1981 ◽  
Vol 84 (1) ◽  
pp. 44-47 ◽  
Author(s):  
Fujito Nemoto ◽  
Kazuhiko Ishizu
Keyword(s):  
Endor Spectrum ◽  
Heat Of Dissociation

The first ENDOR spectrum of naked metal clusters: 7Li3, 6Li 7Li2 and 7Li3(H2O)x in an adamantane matrix

1996 ◽  
Vol 263 (5) ◽  
pp. 710-714 ◽  
Author(s):  
Brynmor Mile ◽  
Philip D. Sillman ◽  
Abdul R. Yacob
Keyword(s):  
Metal Clusters ◽  
Endor Spectrum

Rigorous Approach to the Prediction of the Heat of Dissociation of Gas Hydrates

2003 ◽  
Vol 42 (5) ◽  
pp. 1111-1114 ◽  
Author(s):  
Ji-Ho Yoon ◽  
Yoshitaka Yamamoto ◽  
Takeshi Komai ◽  
Hironori Haneda ◽  
Taro Kawamura
Keyword(s):  
Gas Hydrates ◽  
Rigorous Approach ◽  
Heat Of Dissociation

scholarly journals The determination of the heat of dissociation of fluorine and of the latent heat of vaporisation of lithium

1932 ◽  
Vol 136 (829) ◽  
pp. 76-82 ◽  
Keyword(s):  
High Temperature ◽  
Absorption Spectra ◽  
Latent Heat ◽  
Chemical Reactivity ◽  
Direct Method ◽  
Thermal Methods ◽  
Heat Of Dissociation

The heats of dissociation of chlorine, bromine, and iodine have been determined by thermal methods and estimated to be 58·9, 45·2 and 35·2 kilo-cals. respectively. But no data are yet known concerning the heat of dissociation of fluorine. It is very difficult to subject fluorine to the same treatment as Cl 2 , Br 2 and I 2 ( i. e ., heating to a high temperature in a sealed quartz bulb) owing to its extreme chemical reactivity, and hence no direct method of determining the heat of dissociation of fluorine has yet been devised. In the present paper I have determined it indirectly by interpretation of the absorption spectra of alkali fluorides (for the present only NaF and KF). A short theory of the experiment is given below.

Note on the Chemical Constant of Chlorine

1925 ◽  
Vol 22 (4) ◽  
pp. 491-492 ◽  
Author(s):  
R. R. S. Cox
Keyword(s):  
Experimental Data ◽  
Good Deal ◽  
Absolute Zero ◽  
Chemical Constant ◽  
The Difference ◽  
Heat Of Dissociation ◽  
Good Agreement

Since the publication of a previous paper on chemical constants, some further experimental data upon the dissociation of chlorine by Wohl have appeared, from which a new and rather more satisfactory value of the chemical constant of diatomic chlorine can be calculated. Wohl concludes that Q0, the heat of dissociation at absolute zero, is – 57,000 calories. This is in good agreement with Henglein's value – 54,000 but differs from that of Trautz and Stackel, namely – 71,000, which is the value adopted in the previous paper. Q0 is necessarily an adjustable constant, and since Wold's value gives results which are a good deal more concordant with each other and with the theory, we now take Q0 = − 57,000. Wohl also uses hv0/k = 902 instead of 1093, but as the difference made by this change is very small compared with other disagreements, we retain the value 1093. The following table gives the new values of Γ (Cl2), calculated in the same way as before. The initials at the heads of the columns refer to the results of Henglein, Trautz and Wohl respectively.

Einfluß von Kohärenzeffekten auf die Linienformen im ENDOR-Spektrum des Perinaphthenyl-Radikals / Influence of Coherence Effects On Line Shapes in the ENDOR Spectrum of the Perinaphthenyl Radical

1973 ◽  
Vol 28 (7) ◽  
pp. 1069-1080 ◽  
Author(s):  
K.-P. Dinse
Keyword(s):  
Free Radicals ◽  
Satisfactory Agreement ◽  
High Power ◽  
Endor Spectrum ◽  
Relaxation Times ◽  
Neutral Radical ◽  
Endor Line ◽  
Line Shapes ◽  
Coherence Effects ◽  
On Line

A cw high-power ENDOR spectrometer is described. Freed's theory of coherence effects on ENDOR line shapes of free radicals in solution was tested with cw NMR fields up to 30 Gauss. The neutral radical Perinaphthenyl (PNT) with groups of three and six equivalent protons served as example. A satisfactory agreement with the theory was found, even in quantitative terms. Very reasonable values for relaxation times T1e , T2e and T1n of the PNT could be determined by fitting Te-1/We, Wn/We and using measured values for BMW, BNMR and the EPR line width.

Emissivity and heat of dissociation of CN

1969 ◽  
Vol 65 ◽  
pp. 1199 ◽  
Author(s):  
B. P. Levitt ◽  
A. B. Parsons
Keyword(s):  
Heat Of Dissociation
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