The single crystal absorption spectra of p-benzoquinonc and toluquinone have been observed at 4.2OK for three perpendicular directions of polarization. The electronic otQins of the two n-n\* transitions are located; their separation amounts to 255 cm-\* inp-benzoquinone and 560 cm-l in toluquinone.
Zeeman effect in the Q-band absorption spectrum of palladiumporphin in an n-octane single crystal
โ Scribed by G.W. Canters; M. Noort; J.H. van der Waals
- Publisher
- Elsevier Science
- Year
- 1975
- Tongue
- English
- Weight
- 499 KB
- Volume
- 30
- Category
- Article
- ISSN
- 0009-2614
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โฆ Synopsis
The Zeeman effect in the high resolution spectrum of palladiumporphin in a single crystal o'Cn*ctane at 4.2 K is reported. The tWo zero-point vibrdnic components Ix) and ly) of the state S, are split by 30 cm-l. They show a lygc second order Zeeman effect from which one derives IC~l~~ly)l> 4.4A, In the field the hi@ energy component shows a broadening proportional to Ht.
๐ SIMILAR VOLUMES
We report absorption spectra from the ground state to the photoexcited triplet state of platinum porphin (PtP) in single crystals of n-octane (ca) and n-decane (Clo) at 4.2 K, with and anthout a magnetic field. For PtP in C1o the same transition was studied m emission. From the euperunents, values a
St ~rl, rxprrmlrnts rlrc reporwd on the Si -So O-O transitions of chlonn (7.8-dihydroporphin) and its photorsomer m dilrfcrLn1 utrc tn u-iwune .md aoct.me single cry\t.ds b) photochemical hole-burnmgat 1 2 I<. For chlorin fifi=+O.23 I) \\a111 +kja(So) I or Uie photoproduct we esrmwe JI(SI) = 2 2 D