Summary
The positive chemical ionization mass spectra, with ammonia and isobutane at 0.5 torr of (η6-arene)Cr(CO)3, where arene is C6H5COMe, C6H5COEt, C6H5COC3H7, C6H5COCMe3, 2-MeC6H4COC3H7, C6H5COOMe, C6H5CH2 COEt, C6H5Me and 1,3,5-Me3C6H3 are reported. All these compounds exhibit [M + H]+ as base peak, with isobutane. In the presence of ammonia, [M + NH4]+ is the most abundant ion, when the arene is a ketone or an ester and the addition site is suggested to be the ligand. Conversely [M + H]+ is the base peak when arene is toluene and mesitylene and the protonation site is likely to be the metal atom. In the presence of ammonia, ions such as [M — 3 CO + NH3]+ and [M — 3 CO + 2 NH3]+ are also observed and their abundances strongly depend on the pressure of the reagent gas.
Similar content being viewed by others
References
W. J. Richter and H. Schwarz,Angew. Chem. Int. Ed. Engl., 17, 439 (1978).
D. F. Hunt, J. W. Russell and R. Z. Torian,J. Organometal. Chem., 43, 175 (1972).
W. P. Anderson, N. Hsu, C. W. Stanger Jr. and B. Munson,J. Organometal. Chem., 69, 249 (1974).
W. J. A. Vandenheuvel, R. W. Walker, S. B. Nagelberg and B. R. Willeford,J. Organometal. Chem., 190, 73 (1980).
G. A. Vaglio, P. Volpe and L. Operti,Org. Mass Spectrom, in press.
J. van Thuijl, W. C. M. M. Luijten and W. Onkenhout,J. Chem. Soc., Chem. Comm., 106 (1980).
W. C. M. M. Luijten, W. Onkenhout and J. van Thuijl,Org. Mass Spectrom., 15, 329 (1980).
J. Müller and P. Göser,Chem. Ber., 102, 3314 (1969).
W. E. Silverthorn,Adv. Organometal. Chem., 13, 48 (1975).
Author information
Authors and Affiliations
Rights and permissions
About this article
Cite this article
Gambino, O., Michelin-Lausarot, P., Vaglio, G.A. et al. Positive chemical ionization mass spectra of (η6-arene) tricarbonylchromium complexes with ammonia and isobutane. Transition Met Chem 7, 330–332 (1982). https://doi.org/10.1007/BF00618344
Received:
Issue Date:
DOI: https://doi.org/10.1007/BF00618344