Photoinduced electron transfer in contact ion pairs

1988 ◽  
Vol 110 (4) ◽  
pp. 1294-1295 ◽  
Author(s):  
T. M. Bockman ◽  
Jay K. Kochi
Keyword(s):  
Electron Transfer ◽  
Photoinduced Electron Transfer ◽  
Ion Pairs ◽  
Contact Ion Pairs

Elektronentransfer und Ionenpaare, 15 [ 1– 3] Radikalanion und Radikal-Kontakt-Ionenpaare von Dimesityl-tetraketon / Electron Transfer and Ion Pairing, 15 [1-3] Radical Anion and Radical Ion Pairs of Dimesityl Tetraketone

1990 ◽  
Vol 45 (8) ◽  
pp. 1197-1204 ◽  
Author(s):  
H. Bock ◽  
P. Hänel ◽  
H.-F. Herrmann
Keyword(s):  
Electron Transfer ◽  
Radical Anion ◽  
Ion Pairs ◽  
Ion Pairing ◽  
Single Electron ◽  
Single Electron Transfer ◽  
Temperature Dependent ◽  
Contact Ion Pairs

The radical anion of dimesityltetraketone (ERed, I = -0.40 V) is easily generated in THF by potassium mirror/[2.2.2]-cryptand reduction. Its contact ion pairs with Na⊕, Cs⊕ and Ba⊕⊕ counter cations, prepared in THF solution by single electron transfer from the respective metals, are characterized by their ESR/ENDOR spectra, which exhibit temperature-dependent metal couplings of aNa⊕ = 0.061 mT (190 K), aCs⊕ = 0.021 mT (190 K), and aBa⊕⊕ = 0.145 mT (295 K).

Elektronentransfer und Ionenpaar-Bildung, 7 [1, 2] Kontakt-Ionenpaare Schwefel enthaltender Radikalanionen / Electron Transfer and Ion Pairing, 7 [1, 2] Contact Ion Pairs of Sulfur-Containing Radical Anions

1988 ◽  
Vol 43 (10) ◽  
pp. 1240-1246 ◽  
Author(s):  
Hans Bock ◽  
Peter Hänel ◽  
H.-F Herrmann ◽  
Heindirk torn Dieck
Keyword(s):  
Electron Transfer ◽  
Ion Pairs ◽  
Ion Pairing ◽  
Radical Anions ◽  
Contact Ion Pairs ◽  
Sulfur Containing

The structurally different radical anions M⊖ of peralkylated 1-sila-2,5-diazacyclopentane-3,4-dithione and of tetrakis(isopropylthio)-p-benzoquinone are generated by reduction with potassium/2.2.2-cryptand under aprotic conditions in THF solution. On addition of Li⊕B(C6H5)4⊖, both form hitherto elusive sulfur-containing contact ion pairs, which are characterized by their ESR/ENDOR spectra.

scholarly journals Electronic and spatial control over the formation of transient ion pairs during photoinduced electron transfer between proflavine–amine systems in a subpicosecond time regime

RSC Advances ◽  
2017 ◽  
Vol 7 (25) ◽  
pp. 15149-15157 ◽  
Author(s):  
Chaitrali Sengupta ◽  
Piyali Mitra ◽  
Banabithi Koley Seth ◽  
Debabrata Mandal ◽  
Samita Basu
Keyword(s):  
Physical Chemistry ◽  
Electron Transfer ◽  
Free Energy ◽  
Photoinduced Electron Transfer ◽  
Ion Pairs ◽  
Spatial Control ◽  
Rate Of Reaction ◽  
Reaction Free Energy ◽  
Time Regime

Probing photoinduced electron transfer (PET) in solution in terms of rate of reaction and reaction free energy is a great challenge in physical chemistry.

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