Programm zur Eröffnung des jüdisch-theologischen Seminars zu Breslau "Fränckel'sche Stiftung" : den 16. Ab 5614, 10. August 1854

Enth.: Über palästinische und alexandrinische Schriftforschung / vom Direktor Z. Frankel. Zur Geschichte des jüdisch-theologischen Seminars / vom Kuratorium

Accurate rotational constant and bond lengths of hexafluorobenzene by femtosecond rotational Raman coherence spectroscopy and ab initio calculations

The gas-phase rotational motion of hexafluorobenzene has been measured in real time using femtosecond (fs) time-resolved rotational Raman coherence spectroscopy (RR-RCS) at T = 100 and 295 K. This four-wave mixing method allows to probe the rotation of non-polar gas-phase molecules with fs time resolution over times up to ∼5 ns. The ground state rotational constant of hexafluorobenzene is determined as B 0 = 1029.740(28) MHz (2σ uncertainty) from RR-RCS transients measured in a pulsed seeded supersonic jet, where essentially only the v = 0 state is populated. Using this B 0 value, RR-RCS measurements in a room temperature gas cell give the rotational constants B v of the five lowest-lying thermally populated vibrationally excited states ν7/8, ν9, ν11/12, ν13, and ν14/15. Their B v constants differ from B 0 by between −1.02 MHz and +2.23 MHz. Combining the B 0 with the results of all-electron coupled-cluster CCSD(T) calculations of Demaison et al. [Mol. Phys.111, 1539 (2013)] and of our own allow to determine the C-C and C-F semi-experimental equilibrium bond lengths r e(C-C) = 1.3866(3) Å and r e(C-F) = 1.3244(4) Å. These agree with the CCSD(T)/wCVQZ r e bond lengths calculated by Demaison et al. within ±0.0005 Å. We also calculate the semi-experimental thermally averaged bond lengths r g(C-C)=1.3907(3) Å and r g(C-F)=1.3250(4) Å. These are at least ten times more accurate than two sets of experimental gas-phase electron diffraction r g bond lengths measured in the 1960s.

Bonaventura Cornelius Bertramus De republica Ebraeorum, Recensitus Commentarioque illustratus Opera Constant l'Empereur ab Oppijck

Enth. außerdem: De republica Hebraeorum ... / Petrus Cunaeus

De re grammatica Hebraeorum opus, in gratiam studiosorum linguae sanctae methodo quam facilima conscriptum : Accessit etiam liber de Notis Hebraeorum ab eodem Quinquarboreo ... media parte auctus, ...Hebraicari volentibus ... utilis

auctore Iohanne Quinquarboreo

De re grammatica Hebraeorum opus, in gratiam studiosorum linguae sanctae methodo quam facilima conscriptum : Accessit etiam liber de Notis Hebraeorum ab eodem Quinquarboreo ... media parte auctus, ...Hebraicari volentibus ... utilis

auctore Iohanne Quinquarboreo

Der Reichspudel : So geht ab- Ally, diese Ordre zu dem ...

Bibliograph. Nachweis: Wolf, Sylvia: Politische Karikaturen in Deutschland 1848/49. Mittenwald 1982. – vgl. 1.52 Nr. 5

Sēfer Šabbat šabbātôn : 1. abṭheilung enṭhalṭ foršrifṭen loiṭ den geboṭen der toire ... di am šabbes tzu beobachṭen zind ...

ferfasṭ und heroisgegeben fon ... Šimʿôn Miller

Hisṭorišes magatzin fir feršṭand und hertz : ersṭe und tzweiṭe abṭheilung

Digitalisat der Ausg. Metz, [circa 1800?]

Excitonic splittings in molecular dimers: why static ab initio calculations cannot match them

After decades of research on molecular excitons, only few molecular dimers are available on which exciton and vibronic coupling theories can be rigorously tested. In centrosymmetric H-bonded dimers consisting of identical (hetero)aromatic chromophores, the monomer electronic transition dipole moment vectors subtract or add, yielding S0 → S1 and S0 → S2 transitions that are symmetry-forbidden or -allowed, respectively. Symmetry breaking by 12C/13C or H/D isotopic substitution renders the forbidden transition weakly allowed. The excitonic coupling (Davydov splitting) can then be measured between the S0 → S1 and S0 → S2 vibrationless bands. We discuss the mass-specific excitonic spectra of five H-bonded dimers that are supersonically cooled to a few K and investigated using two-color resonant two-photon ionization spectroscopy. The excitonic splittings Δcalc predicted by ab initio methods are 5–25 times larger than the experimental excitonic splittings Δexp. The purely electronic ab initio splittings need to be reduced (“quenched”), reflecting the coupling of the electronic transition to the optically active vibrations of the monomers. The so-called quenching factors Γ < 1 can be determined from experiment (Γexp) and/or calculation (Γcalc). The vibronically quenched splittings Γ·Δcalc are found to nicely reproduce the experimental exciton splittings.

Kundmachung: Mit dem heutigen Tage um 12 Uhr läuft die von dem Herrn Feldmarschall Fürsten Windischgrätz der Stadt gestellte Frist ab ...

Welsch (Projektbearbeiter): Aufruf anläßlich des Verstreichens des von Fürst Windisch-Graetz gestellten Ultimatums zur Übergabe Wiens, die Barrikadenbauten fortzuführen und Ruhe und Besonnenheit zu bewahren. Mit einer Beschießung der Stadt muß gerechnet werden. Warnung vor der Verschwendung von "Kanonen, Munition und Menschen"