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Records of densely spaced shots along the Sino-US reflection line INDEPTH II at offsets between 70 and 130 km parallel to the main profile provide an image of the crust straddling the Indus-Yarlung suture. The major features are prominent reflections at about 20 km

Darstellung und Eigenschaften der Alkinylphenole 3af werden beschrieben. Ihre Dehydrierung ergibt die entsprechenden Phenoxyle 4, die ESR-spektroskopisch untersucht wurden. Es zeigt sich, daR an den acetylenischen Kohlenstoffatomen endliche freie Spindichten auftreten. Daher kannen an diesen Atomen auch Radikalreaktionen erfolgen, wie die Dimerisierung von 4d zu dem Allenather 8a fur C-Atom 3' beweist. Spin Density Distribution in Free Radicals, Vm') Participation of the CC-Triple Bond in the Mesomerism of Phenoxy RadicalsThe preparation and some properties of the alkinyl phenols 3 a -f are described. These phenols are dehydrogenated to form the corresponding phenoxy radicals 4, which are studied by e.s.r. spectroscopy. It is evident that there are final spin densities of the odd electron on the acetylenic carbon atoms. Therefore, these may be directly involved in free-radical reactions as is demonstrated for carbon atom 3' by the dimerization of 4a to give the allenic ether 8a.

4‐Phenyläthinyl‐2,6‐di‐tert.‐butyl‐phenol (I) liefert bei der Oxidation über (IIa) 6 (IIb) das Dimere (III), das weiter in das Cyclobuten (IV) übergeht.