Gas-phase rotational spectroscopy of AlCCH : A model system for organo-aluminum compounds

2012 ◽  
Vol 553 ◽  
pp. 11-16 ◽  
Author(s):  
M. Sun ◽  
D.T. Halfen ◽  
J. Min ◽  
D.J. Clouthier ◽  
L.M. Ziurys
Keyword(s):  
Gas Phase ◽  
Model System ◽  
Rotational Spectroscopy ◽  
Aluminum Compounds

scholarly journals Elucidating the multiple structures of pipecolic acid by rotational spectroscopy

2019 ◽  
Vol 21 (8) ◽  
pp. 4155-4161 ◽  
Author(s):  
A. Simão ◽  
C. Cabezas ◽  
I. León ◽  
E. R. Alonso ◽  
S. Mata ◽  
...  
Keyword(s):  
Amino Acid ◽  
Gas Phase ◽  
Theoretical Data ◽  
Pipecolic Acid ◽  
Conformational Space ◽  
Rotational Spectroscopy ◽  
Multiple Structures ◽  
First Time

The complex conformational space of the non-proteinogenic cyclic amino acid pipecolic acid has been explored in the gas phase for the first time, with 9 conformers characterized via a combination of CP-FTMW and LA-FTMW techniques, supported by theoretical data.

scholarly journals Non covalent interactions stabilizing the chiral dimer of CH2ClF: a rotational study

2019 ◽  
Vol 21 (7) ◽  
pp. 3695-3700 ◽  
Author(s):  
Laura B. Favero ◽  
Assimo Maris ◽  
Sonia Melandri ◽  
Paolo Ottaviani ◽  
Walther Caminati
Keyword(s):  
Spectral Analysis ◽  
Gas Phase ◽  
Rotational Spectroscopy ◽  
Non Covalent Interactions ◽  
Covalent Interactions

Two C–H⋯Cl–C and one C–H⋯F–C bonds stabilize (by 5.9 kJ mol−1) the dimer of chlorofluoromethane observed by rotational spectroscopy in the gas phase. The spectral analysis is complicated by the quadrupolar effects of the two nonequivalent Cl nuclei.

The use of a silica-based heat sink to “uncouple” the matrix-assisted laser desorption/ionization (MALDI) mechanism

2011 ◽  
Vol 89 (4) ◽  
pp. 446-460 ◽  
Author(s):  
E. Lourantos ◽  
O. M. Ramirez ◽  
A. E. Giannakopulos ◽  
K. A. Beran ◽  
Peter J. Derrick ◽  
...  
Keyword(s):  
Gas Phase ◽  
Heat Sink ◽  
Model System ◽  
Model Systems ◽  
Laser Desorption Ionization ◽  
System A ◽  
The Matrix ◽  
Pass Through ◽  
Maldi Mechanism ◽  
Silicon Based

The relationships between ion yield(s) as a function of desorption alone and (or) ionization was investigated using two model systems. In the first model system, a carbohydrate (2,3,6-tri-O-methyl-β-cyclodextrin, TMBCD), which could be directly laser desorbed, was analyzed with and without a silicon-based heat sink compound (HSC). The HSC allowed heat to pass through but obstructed the flow of charge. In the second model system, a peptide (substance P), which ccould not be laser desorbed, was analyzed under similar conditions. The ion yield of TMBCD under either system of heat conductivity was similar, whereas the ion yield of the peptide with the heat sink was negligible. Compounds that are predominately cationized either in the gas phase or preformed in solution give an ion yield that is not dependent upon the surface conditions, whereas compounds that are not ordinarily cationized are affected by the emission of electrons from the metal surface.

scholarly journals Gas phase complexes of H3N⋯CuF and H3N⋯CuI studied by rotational spectroscopy and ab initio calculations: the effect of X (X = F, Cl, Br, I) in OC⋯CuX and H3N⋯CuX

2016 ◽  
Vol 18 (19) ◽  
pp. 13638-13645 ◽  
Author(s):  
Dror M. Bittner ◽  
Susanna L. Stephens ◽  
Daniel P. Zaleski ◽  
David P. Tew ◽  
Nicholas R. Walker ◽  
...  
Keyword(s):  
Ab Initio Calculations ◽  
Ab Initio ◽  
Gas Phase ◽  
Microwave Spectroscopy ◽  
Rotational Spectroscopy

Complexes of H3N⋯CuF and H3N⋯CuI have been synthesised in the gas phase and characterized by microwave spectroscopy.

Accurate Characterization of the Peptide Linkage in the Gas Phase: A Joint Quantum-Chemical and Rotational Spectroscopy Study of the Glycine Dipeptide Analogue

2014 ◽  
Vol 5 (3) ◽  
pp. 534-540 ◽  
Author(s):  
Cristina Puzzarini ◽  
Malgorzata Biczysko ◽  
Vincenzo Barone ◽  
Laura Largo ◽  
Isabel Peña ◽  
...  
Keyword(s):  
Gas Phase ◽  
Quantum Chemical ◽  
Rotational Spectroscopy ◽  
Spectroscopy Study ◽  
Peptide Linkage
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