Detail of "7641-77-2"

CAS Number:
7641-77-2
Name:
Bicyclo[2.2.0]hexa-2,5-diene,1,2,3,4,5,6-hexamethyl-
Molecular Structure:
Formula:
C12H18
Molecular Weight:
162.30
Synonyms:
Bicyclo[2.2.0]hexa-2,5-diene,hexamethyl- (7CI); 1,2,3,4,5,6-Hexamethylbicyclo[2.2.0]hexa-2,5-diene;Hexamethyl Dewar benzene; Hexamethylbicyclo[2.2.0]hexa-2,5-diene
Melting Point:
7 °C(lit.)
Boiling Point:
60 °C20 mm Hg(lit.)
Safety:
Questionable carcinogen with experimental tumorigenic data. When heated to decomposition it emits acrid smoke and fumes. Details

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Adiabatic isomerization of an exciplex: the 1-cyanonaphthalene-hexamethyldewarbenzene case: Adiabatic isomerization of an exciplex: the 1-cyanonaphthalene-hexamethyldewarbenzene case. Taylor, Gary N. (Bell Lab. 87-85-4 and 7641-77-2 are also occured in this study., Murray Hill, N. J., USA). Z. Phys. Chem. (Frankfurt am Main), 101(1-6), 237-54 (English) 1976. CODEN: ZPCFAX. DOCUMENT TYPE: Journal CA Section: 22 (Physical Organic Chemistry) The adiabatic photoisomerization of hexamethyl(Dewar benzene) to C6Me6 sensitized by 1-cyanonaphthalene excited singlet was studied by fluorescence with 2 structureless bands characteristic of exciplex emission. Charge-transfer stabilization of the initially formed exciplex was a necessary factor in the sensitization of the isomerization. .

High pressure experiments: High pressure experiments. VI. The rearrangement of hexamethyl Dewar benzene to hexamethylbenzene. Muendnich, R.; Plieninger, H. (Org. Chem. Inst., Univ. Heidelberg, Heidelberg, Ger.). Tetrahedron, 32(19), 2335-7 (German) 1976. CODEN: TETRAB. DOCUMENT TYPE: Journal CA Section: 22 (Physical Organic Chemistry) A strong acceleration of the rearrangement of hexamethyl Dewar benzene into hexamethylbenzene occurs at high pressure. Values for the activation vol. (.DELTA.V0.thermod.) and vol. decrease (.DELTA.V) were detd. as -34.6 .+-. 2.5 and -22. 7641-77-2 is just another one chemical used in this study.5 .+-. 1 cm3/mol, resp. .