Comparison of electron impact, desorption, chemical ionization, field desorption, and fast atom bombardment mass spectra of nine monosubstituted group VI metal carbonyls

Journal Article · Fri Jul 01 04:00:00 EDT 1988 · Anal. Chem.; (United States)

DOI:https://doi.org/10.1021/ac00164a014· OSTI ID:7191016

van Breemen, R B; Martin, L B; Schreiner, A F

Nine monosubstituted group VI metal pentacarbonyls of the type M(CO)/sub 5/L (where M = Cr, Mo, or W; and L = P(C/sub 6/H/sub 5/)/sub 3/, As(C/sub 6/H/sub 5/)/sub 3/, or Sb(C/sub 6/H/sub 5/)/sub 3/) were synthesized and purified by recrystallization so that they contained no unbound ligands, excess reagents, or other contaminants as measured by high-performance liquid chromatography. Positive ion mass spectra were obtained by electron impact (EI), desorption chemical ionization (DCI), field desorption (FD), and fast atom bombardment (FAB) mass spectrometry. B/E linked scanning was used to confirm the fragmentation pathway in FAB mass spectra. While all four ionization methods formed molecular ions, M/sup +/, the desorption ionization methods tended to produce more abundant molecular ions than EI. FD, for instance, formed molecular ions without any fragmentation. The most abundant fragment ions of the ligand (L) were observed with DCI. FAB spectra contained abundant molecular ions and extensive structural information in ion fragments.

• Research Organization: North Caroling State Univ., Raleigh (USA)
• OSTI ID: 7191016
• Journal Information: Anal. Chem.; (United States), Journal Name: Anal. Chem.; (United States) Vol. 60:13; ISSN ANCHA
• Country of Publication: United States
• Language: English

Related Subjects

37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400201* -- Chemical & Physicochemical Properties
CARBONYLS
CHROMIUM COMPOUNDS
DATA
DESORPTION
EXPERIMENTAL DATA
INFORMATION
IONIZATION
MASS SPECTRA
MASS SPECTROSCOPY
MOLYBDENUM COMPOUNDS
NUMERICAL DATA
REFRACTORY METAL COMPOUNDS
SPECTRA
SPECTROSCOPY
STRUCTURAL CHEMICAL ANALYSIS
TRANSITION ELEMENT COMPOUNDS
TUNGSTEN COMPOUNDS