2011
DOI: 10.1016/j.ica.2010.10.018
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Synthesis and characterization of amine complexes of the cyclopentadienyliron dicarbonyl complex cation, [Cp(CO)2Fe]+

Abstract: [{CpFe(CO) 2 } 2 l-(NH 2 (CH 2 ) n NH 2 )](BF 4 ) 2 (n = 2-4) (3), respectively. These complexes have been fully characterized and the mass spectral patterns of complexes 2 are reported. The structures of compounds 2a (n = 2) and 2b (n = 3) have been confirmed by single crystal X-ray crystallography. The single crystal X-ray diffraction data show that complex 2a, [CpFe(CO) 2 NH 2 (CH 2 ) 2 CH 3 ]BF 4 , crystallizes in a triclinic P 1 space group while 2b, [CpFe(CO) 2 NH 2 (CH 2 ) 3 CH 3 ]BF 4 , crystallizes in… Show more

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Cited by 21 publications
(15 citation statements)
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“…The two {Cp(CO) 2 Fe} units are linked by the HMTA ligand through the nitrogen atoms in which the coordination geometry around Fe can be described as distorted octahedral with three sites occupied by a cyclopentadienyl ligand, while the two carbonyls and the HMTA ligand occupy the remaining three sites. The Fe-N bond distances were found to be 2.0817(17) and 2.0858(18) Å, which are comparable to the 2.092(4) Å in [(CO) 4 Fe(DABCO) [30], but longer than the Fe-N bond lengths previously reported for cyclopentadienylirondicarbonyl amine complexes [44,48,50]. The three carbon atoms adjacent to the iron centre form a base with a distorted tetragonal geometry about nitrogen with N-C bonds in the range 1.514 ± 0.010 Å. Valence angles are: Fe-N-C, 111.89 ± 1.51°and C-N-C, 106.94 ± 0.84°.…”
Section: Cpsupporting
confidence: 67%
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“…The two {Cp(CO) 2 Fe} units are linked by the HMTA ligand through the nitrogen atoms in which the coordination geometry around Fe can be described as distorted octahedral with three sites occupied by a cyclopentadienyl ligand, while the two carbonyls and the HMTA ligand occupy the remaining three sites. The Fe-N bond distances were found to be 2.0817(17) and 2.0858(18) Å, which are comparable to the 2.092(4) Å in [(CO) 4 Fe(DABCO) [30], but longer than the Fe-N bond lengths previously reported for cyclopentadienylirondicarbonyl amine complexes [44,48,50]. The three carbon atoms adjacent to the iron centre form a base with a distorted tetragonal geometry about nitrogen with N-C bonds in the range 1.514 ± 0.010 Å. Valence angles are: Fe-N-C, 111.89 ± 1.51°and C-N-C, 106.94 ± 0.84°.…”
Section: Cpsupporting
confidence: 67%
“…The IR spectra of compounds 3a-4b show two strong absorption bands in the range 2058-1982 cm À1 assignable to the two terminal carbonyls as expected for cationic amine complexes [44,[48][49][50]. The IR spectra of 4a and 4b exhibited characteristic v(CO) stretching vibrations at wavenumbers lower than those of 3a and 3b by ca.…”
Section: Resultsmentioning
confidence: 74%
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“…In the IR spectra of compounds 3e9, the n(CO) bands are in the expected range for terminal carbonyl groups of amine-coordinated iron dicarbonyl complexes [20,22]. The infrared spectra of the Cp* complexes 4 and 6 show the n(CO) bands at lower frequencies than their Cp counterparts due to the electron releasing ability of the pentamethylcyclopentadienyl ligand which consequently increases the metal / carbon back donation.…”
Section: Synthesis Of [(H 5 -C 5 R 5 )(Co) 2 Fel]bf 4 (3e9)mentioning
confidence: 97%
“…The title compound is a water-soluble organometallic compound which was prepared as part of our ongoing study on functionalized alkyl transition metal complexes (M'thiruaine et al, 2011;Changamu & Friedrich 2008;Friedrich et al, 2005;Changamu, Friedrich, Howie, & Rademeyer, 2007;Changamu et al, 2009). The asymmetric unit ( (Table 1).…”
Section: Methodsmentioning
confidence: 99%