ISSN:
0030-493X
Keywords:
Chemistry
;
Analytical Chemistry and Spectroscopy
Source:
Wiley InterScience Backfile Collection 1832-2000
Topics:
Chemistry and Pharmacology
Notes:
A mass spectrometric examination of five homoannularly chlorinated ferrocenes of the general formula (C5H(5-n))Fe(C5H5) where n = 1 to 5 (Series 1), and five heteroannularly chlorinated ferrocenes of the general formula (C5H(5-n)Cln)2Fe where n = 1 to 5 (Series 2) has been made. This study affords the first look at the mass spectral results of incremental additions of the same substituent up to the ultimate replacement of all hydrogens in the ferrocene molecule. The molecular ion is the most intense peak in both series. The primary fragmentation processes are, for Series 1: [M - FeCl2], [M - C5H(5-n)Cln], [M - C5H5] and [M - HCl]; and for series 2: [M - FeCl2] and [M - C5H(5-n)Cln]. The [M - FeCl2]+. peak is speculatively attributed to a fulvalene derivative. A heteroannular pathway is proposed for HCl elimination. Significant [Fe]+. and [FeCl]+ peaks occur in all compounds. In all compounds having three or more hydrogens on one ring, a peak due to [C3H3]+ is seen. Metastable studies, precise mass measurements and isotopic abundance ratios of chlorine were used to confirm many of the fragmentation processes.
Additional Material:
12 Ill.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1002/oms.1210040141
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