Laser excitation spectra of the C̃2A1-X̃2A1 system of CaNH2 are reported. Due to the spectral density, individual lines could only be resolved and measured using a filtered fluorescence excitation technique, with a monochromator acting as an optical bandpass filter; 140 line positions were measured in this way and assigned to the parallel K−1 = 1 subband of what is believed to be the vibrational 0-0 band. The molecular constants were determined from a weighted nonlinear least-squares fit of the line positions. Main parametersX̃2A1C̃2A1Tk−1 = 13-17375.129(5)B0.30079(6)0.30562(6)C0.29319(6)0.29789(8)ϵaa3-−0.66(4)ϵbb3-−0.0356(8)ϵcc3-−0.0453(8) The electronic structure and spin-rotation parameters of this new class of molecules are discussed and compared to the isoelectronic CaF.

The monoamides of calcium, strontium, and barium were observed for the first time as products of low-pressure chemiluminescent reactions of the metal atom vapors with a hydrazine oxidant. The monoamide chemiluminescence spectra are assigned by comparison with those of the isoelectronic alkaline-earth monohydroxides and monofluorides, formed with water and sulfur hexafluoride oxidants. These comparisons also allow the amide's position in the spectrochemical series for monovalent alkaline-earth compounds to be established as follows: F− > OH− > NH2− > Cl− > Br− > I−. Dynamical aspects of the reactions along with prospects for the generation and study of other polyatomic alkaline-earth compounds by similar gas-phase reactions are discussed.

AbstractDie Titelverbindungen (II)‐(VIII) wurden nach Schema dargestellt (R4N Cl" = Tricaprylylmethylammoniumchlorid; (VI) und (VII) bei Ge‐samtausb.

AbstractNach dem Mikrowellenspektrum wird dem Tränenreiz‐verursachenden Inhaltsstoffen der Zwiebel die Struktur (Z)‐Propanthial‐S‐oxid (III) zuerkannt.

AbstractWährend Derivate der Titelverbindung (III) seit langem bekannt sind, ist (III) selbst bislang unbekannt geblieben; sie läßt sich einfach darstellen durch Umsetzung des Dichlorids (I) mit Na‐sulfid in Gegenwart des Katalysators Tricaprylmethylammoniumchlorid [→(II) ] und nachfolgende Reduktion.

AbstractDie Titelverbindung (Thioformaldehyd‐ S‐oxid) ist durch Vakuum‐Blitzpyrolyse einer Reihe von Verbindungen wie z.B. 1,3‐Dithietan‐1‐oxid, Jodmethylmethylsulfoxid oder Methansulfinylchlorid zugänglich.