Mass Spectra of Isothiocyanates.

POSITIVE AND NEGATIVE ION MASS SPECTRA OF RING - SUBSTITUTED NITROBENZENES

The 70 ev positive and negative ion mass spectra of ring-substituted nitrobenzenes were studied. The influence of the substituent group on the fragmentation modes of the molecular ions is discussed. The effect of pressure in the formation of negative ions was also studied. As expected, the ratio of fragment ions to negative molecular ions decreased with increasing pressure in ion source.

Modelling CDA mass spectra

We present the initial results from a simulation of ion behaviour within Cassini’s cosmic dust analyser (CDA) instrument, using an inhouse ion dynamics code. This work is to enable and enhance the detailed interpretation of dust impact ionisation mass spectra returned from the Saturnian system. Early work has already provided insights into the properties of the impact plasma in both lowand high...

accurate-mass spectra

Hydroxy Isothiocyanates

antifungal and antibacterial activities at concentrations of 7.8 to 15,6uglml, respectively, and that a possible target of the ITC compounds might be the cellular sulfhydryl group, In recent years, a number of multidrug transporters have been found in various organisms including bacteria and human cells.3) A promising way to conquer such multidrug resistance is to inactivate the eMux protein in...

Isothiocyanates. XXX. Synthesis, Ultraviolet and Infrared Spectra of 3-Substituted Rhodanines

Our preceding papers [1 — 3] referring to the quantitative study of nucleophilic addi­ tion reactions of isothiocyanates (ITC) deal with the reactivity of alkyl and particu­ larly aryl isothiocyanates with —OH ions, amino groups (of various amines and amino acids), and thioglycolate. Results thus obtained together with further analogous ones from investigation of the reactivity of ITC with othe...