Molecular motion in plastic phases of organometallic compounds: iron-57 Mössbauer and carbon-13 n.m.r. spectra of tricarbonyl(1–5-hapto-cyclohexadienyl)iron tetrafluoroborate and related compounds

Author(s):  
Malcolm J. Buckingham ◽  
Brian W. Fitzsimmons ◽  
Ian Sayer
2015 ◽  
Vol 44 (18) ◽  
pp. 6452-6463 ◽  
Author(s):  
Israel Fernández ◽  
Gernot Frenking ◽  
Gabriel Merino

In this review, we focus on the aromaticity of a particular family of organometallic compounds known as metallabenzenes, which are characterized by the formal replacement of a CH group in benzene by an isolobal transition metal fragment.


1969 ◽  
Vol 47 (4) ◽  
pp. 559-568 ◽  
Author(s):  
R. B. King

The mass spectra of the following complexes have been investigated: (a) the indenylmolybdenum carbonyl derivatives CH3Mo(CO)3C9H7, π-C3H5Mo(CO)2C9H7, π-CH3SCH2Mo(CO)2C5H5, and C9H7Mo(CO)2I; (b) the bisindenyl derivative (C9H7)2Fe; (c) the series of compounds C5H5FeC9H7, C5H5FeC9H9, and C5H5FeC9H11 with different degrees of hydrogenation of the π-indenyl ligand. The following features of particular interest were noted: (a) evidence for the existence of small amounts of the new compound π-C3H5Mo(CO)2C9H6C3H5 in the sample of π-C3H5Mo(CO)2C9H7; (b) evidence for the pyrolysis of C9H7Mo(CO)2I to give [C9H7MoI2]2 and (C9H7)2MoCOI; (c) evidence for the fragmentation of C9H7Fe+ to give the ion C9H7+ and a neutral iron atom; (d) evidence for parallel pathways for fragmentation of the parent ion from C5H5FeC9H11 involving elimination of CH3, C2H4, C3H5, C5H6, and H2. Diagnostic features from the mass spectrum for the presence of a π-indenyl ligand in a complex appear to be the ions C9H8+, C9H7+, C7H5+, C5H3+, and C9H72+.


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