Infrared multiphoton dissociation of electrosprayed crown ether complexes

Peiris, Dilrukshi M.; Yang, Yarjing; Ramanathan, Ragulan; Williams, Kathryn R.; Watson, Clifford H.; Eyler, John R.

doi:10.1016/s0168-1176(96)04462-x

Cited by 37 publications

(29 citation statements)

References 40 publications

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“…3.1 eV for 18c6-Na + and 15c5-Na + , 2.6 eV for 12c4-Na + , and 2.1 eV for 15c5-K + ). These results were in qualitative agreement with the relative stabilities observed in early infrared multiple photon dissociation (IRMPD) experiments performed by Eyler and coworkers at a fixed wavelength (10.6 µm) 5 and have been corroborated in more recent FT-ICR-MS experiments by Dearden and coworkers. 6 Complementary to those studies, Bowers and coworkers explored the coarsegrain conformation of the crown-alkali complexes with ion mobility chromatography.…”

Section: Introductionsupporting

confidence: 89%

Spectroscopic Investigation of the Gas-Phase Conformations of 15-Crown-5 Ether Complexes with K⁺

et al. 2009

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Infrared multiple photon dissociation action spectra of the binary and ternary gas-phase complexes formed by 15-crown-5 ether with potassium cations (15c5-K + and 15c5-K + -15c5) are reported. The spectra span the 800-1500 cm -1 infrared range. Particularly significant differences are found in the position and structure of the CO-stretching band of the two types of complexes. The computational prediction at the DFT-B3LYP/ 6-31G* level of theory agrees well with the experimental observations, and provides a correlation between the spectral differences and the structural changes associated with the coordination of the ether oxygens with the alkali cation. The 15c5-K + complex adopts a pyramidal structure, with the cation lying above the center of mass of the ether ring at a distance similar to its ionic radius. The ternary 15c5-K + -15c5 complex features a less tight coordination of the cation and a relative rotation between the backbones of the two crown ethers, which minimizes the intermolecular repulsions between the oxygens.

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Section: Introductionsupporting

confidence: 89%

Spectroscopic Investigation of the Gas-Phase Conformations of 15-Crown-5 Ether Complexes with K⁺

et al. 2009

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“…(ii) The binding energy of any ligand L in the ML n þ complexes under study decreases from Li þ to Cs þ , probably due to the more concentrated charge on Li þ and better orbital overlap, because Li þ and the oxygen donor are in the same row of the periodic table. This trend has also been observed in a study that employed the infrared multiphoton dissociation (IRMPD) technique (Peiris et al, 1996). (iii) The binding energy increases from 12-crown-4 to 18-crown-6 for all metal ions (for Li þ , this trend still must be confirmed because no binding energies have been 15-crown-5) and Li þ (18-crown-6) complexes).…”

Section: Gas-phase Binding Energies From Threshold Collision-inducsupporting

confidence: 60%

Molecular recognition and supramolecular chemistry in the gas phase

Schalley

2001

Mass Spectrometry Reviews

289

180

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Supramolecular chemistry, in particular, the fields of molecular recognition and self-assembly, profit much from the development of soft ionization techniques and advanced methods for mass analysis and gas-phase chemistry. Vice versa, weakly bonded architectures and host-guest complexes represent a veritable challenge for the mass spectrometrist, leading to further development of methods and techniques. This review describes the state-of-the-art in this field, and includes topics such as the effects of solvation on meta binding to crown ethers, chiral discrimination of guests by chiral hosts, the elucidation of the secondary structure of self assembled complexes, and the mechanistic pathways of self assembly or the fragmentations of supramolecular complexes in the gas phase.

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“…FeðOCH 3 Þ 2 ðDXEÞ þ þ C 2 H 4 For comparison, IRMPD of crown ether complexes of alkali metals or H 3 O þ at 943 cm À1 , reported by Peiris et al [28], follows very different schemes: dissociation of crown ether alkali metal complexes leads to the loss of the ligand at low laser fluences, the dissociation of the crown ether being not observed. Dissociation of crown ether H 3 O þ complexes proceeds via loss of water to generate protonated crown ether, which is fragmented at high fluence through loss of C 2 H 4 O units.…”

Section: Fragmentation Efficiencymentioning

confidence: 96%

Structural characterization of selectively prepared cationic iron complexes bearing monodentate and bidentate ether ligands using infrared photodissociation spectroscopy

Caër

Héninger

Lemaire

et al. 2004

Chemical Physics Letters

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Infrared multiphoton dissociation of electrosprayed crown ether complexes

Cited by 37 publications

References 40 publications

Spectroscopic Investigation of the Gas-Phase Conformations of 15-Crown-5 Ether Complexes with K⁺

Spectroscopic Investigation of the Gas-Phase Conformations of 15-Crown-5 Ether Complexes with K⁺

Molecular recognition and supramolecular chemistry in the gas phase

Structural characterization of selectively prepared cationic iron complexes bearing monodentate and bidentate ether ligands using infrared photodissociation spectroscopy

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Infrared multiphoton dissociation of electrosprayed crown ether complexes

Cited by 37 publications

References 40 publications

Spectroscopic Investigation of the Gas-Phase Conformations of 15-Crown-5 Ether Complexes with K+

Spectroscopic Investigation of the Gas-Phase Conformations of 15-Crown-5 Ether Complexes with K+

Molecular recognition and supramolecular chemistry in the gas phase

Structural characterization of selectively prepared cationic iron complexes bearing monodentate and bidentate ether ligands using infrared photodissociation spectroscopy

Contact Info

Product

Resources

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Spectroscopic Investigation of the Gas-Phase Conformations of 15-Crown-5 Ether Complexes with K⁺

Spectroscopic Investigation of the Gas-Phase Conformations of 15-Crown-5 Ether Complexes with K⁺