ZIB

Hits per page

hits 1 - 2 | 2 hits

Sorting

Electronic Resource

Saturated 2D-LIF of OH and 2D determination of effective collisional lifetimes in atmospheric pressure flames (1991)

Schäfer, M. ; Ketterle, W. ; Wolfrum, J.

Springer

Applied physics 52 (1991), S. 341-346

add to mindlist on the mindlist

Details

ISSN: 1432-0649

Keywords: 42.60 ; 34.50

Source: Springer Online Journal Archives 1860-2000

Topics: Physics

Notes: Abstract Saturation of two-dimensional laser-induced fluorescence is demonstrated using the coincidence between the strong 0–0 vibrational transition of OH around 308 nm and the emission of a tunable XeCl excimer laser. The 2D images were insensitive to variations in the laser power, implying reduced sensitivity to quenching processes. The ratio of the 2D images in the linear and saturated regimes show two-dimensional variations in the saturation intensity. Since saturation intensity is proportional to the quenching rate, this novel method allows one to check for variations in collisional lifetimes across the flame.

Type of Medium: Electronic Resource

URL: http://dx.doi.org/10.1007/BF00325493

Permalink

Library	Location	Call Number	Volume/Issue/Year	Availability

Others were also interested in ...

Paper (German National Licenses)

Fulltext

Electronic Resource

Ionische Kronenetherkomplexe von Zinn(II) und Zinn(IV): [Sn(15-Krone-5)] [SnCl6] und [SnCl3(18-Krone-6)]2[Sn2Cl10]; Synthesen, IR-Spektren und 119Sn-Mößbauer-Spektren (1992)

Schäfer, M. ; Dehnicke, K.

Weinheim : Wiley-Blackwell

Zeitschrift für anorganische Chemie 615 (1992), S. 127-130

add to mindlist on the mindlist

Details

ISSN: 0044-2313

Keywords: Ionic Crown Ether Complexes of Tin(II) and Tin(IV) ; synthesis ; IR spectra ; 119Sn-Mössbauer spectra ; Chemistry ; Inorganic Chemistry

Source: Wiley InterScience Backfile Collection 1832-2000

Topics: Chemistry and Pharmacology

Description / Table of Contents: Ionic Crown Ether Complexes of Tin(II) and Tin(IV): [Sn(15-Crown-5)][SnCl6] and [SnCl3(18-Crown-6)]2[Sn2Cl10]; Syntheses, IR Spectra, and 119Sn-Mössbauer Spectra[Sn(15-crown-5)][SnCl6] (1,) has been prepared by the reaction of SnCl2, SnCl4, and 15-crown-5 in the molar ratio of 1 : 1 : 1 in acetonitrile solution, forming a white insoluble crystal powder. [SnCl3(18-crown-6)]2[Sn2Cl10] (2,) as well as [SnCl3(18-crown-6)][BiCl4] · CH3CN (3,) are prepared by the reaction of SnCl4 with 18-crown-6 (molar ratio 2 : 1), and of SnCl4, 18-crown-6, and BiCl3 (molar ratio 1 : 1 : 1), respectively. According to IR-spectroscopy and 119Sn-Mössbauer-spectroscopy 1-3, have ionic structures; the cation of 1, being polymeric via a sandwich-like structure.

Notes: [Sn(15-Krone-5)] [SnCl6] (1,) entsteht als schwerlösliches weißes Kristallpulver aus SnCl2, SnCl4 und 15-Krone-5 im Molverhältnis 1 : 1 : 1 in Acetonitrillösung, während [SnCl3(18-Krone-6)]2[Sn2Cl10] (2,) aus SnCl4 und 18-Krone-6 im Molverhältnis 2 : 1 und [SnCl3(18-Krone-6)] [BiCl4] · CH3CN (3,) aus SnCl4, 18-Krone-6 und BiCl3 im Molverhältnis 1 : 1 : 1 gebildet werden. Aus den IR- und den 119Sn-Mößbauer-Spektren wird auf ionische Strukturen geschlossen; das Kation von 1, besitzt eine polymere Struktur, in der das Sn2+ -Ion über (15-Krone-5)-Moleküle sandwichartig gestapelt ist.

Additional Material: 3 Ill.