Infrared laser spectroscopy of uracil and thymine in helium nanodroplets: Vibrational transition moment angle study

被引：52

作者：

Choi, Myong Yong

Miller, Roger E.

机构：

[1] Univ N Carolina, Dept Chem, Chapel Hill, NC 27599 USA

[2] Gyeongsang Natl Univ, Dept Chem, Jinju 660701, South Korea

[3] Gyeongsang Natl Univ, Res Inst Nat Sci, Jinju 660701, South Korea

来源：

JOURNAL OF PHYSICAL CHEMISTRY A | 2007年 / 111卷 / 13期

关键词：

D O I：

10.1021/jp0674625

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Vibrational spectra are reported in the N-H stretching region for uracil and thymine monomers in helium nanodroplets. Each monomer shows only a single isomer, the global minimum, in agreement with previous experimental and theoretical studies. The assignment of the infrared vibrational bands in the spectra is aided by the measurement of the corresponding vibrational transition moment angles (VTMAs) and ab initio frequency calculations. The ambiguity in the VTMA assignment of the N3H band for the uracil monomer is explained by the presence of dimer bands, which are overlapped with the monomer band.

引用

收藏

页码：2475 / 2479

页数：5

相关论文

共 48 条

[1] SPECTROSCOPY OF PENDULAR STATES - THE USE OF MOLECULAR-COMPLEXES IN ACHIEVING ORIENTATION [J].

BLOCK, PA ;

BOHAC, EJ ;

MILLER, RE .

PHYSICAL REVIEW LETTERS, 1992, 68 (09) :1303-1306

[2] DENSITY OF STATES AND EVAPORATION RATE OF HELIUM CLUSTERS [J].

BRINK, DM ;

STRINGARI, S .

ZEITSCHRIFT FUR PHYSIK D-ATOMS MOLECULES AND CLUSTERS, 1990, 15 (03) :257-263

[3] MICROWAVE-SPECTRUM OF URACIL [J].

BROWN, RD ;

GODFREY, PD ;

MCNAUGHTON, D ;

PIERLOT, AP .

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 1988, 110 (07) :2329-2330

[4] MICROWAVE-SPECTRUM OF THE MAJOR GAS-PHASE TAUTOMER OF THYMINE [J].

BROWN, RD ;

GODFREY, PD ;

MCNAUGHTON, D ;

PIERLOT, AP .

JOURNAL OF THE CHEMICAL SOCIETY-CHEMICAL COMMUNICATIONS, 1989, (01) :37-38

[5] A STARK-MODULATED SUPERSONIC NOZZLE SPECTROMETER FOR MILLIMETRE-WAVE SPECTROSCOPY OF LARGER MOLECULES OF LOW VOLATILITY [J].

BROWN, RD ;

CROFTS, JG ;

GODFREY, PD ;

MCNAUGHTON, D ;

PIERLOT, AP .

JOURNAL OF MOLECULAR STRUCTURE, 1988, 190 :185-193

[6] Helium nanodroplet isolation rovibrational spectroscopy: Methods and recent results [J].

Callegari, C ;

Lehmann, KK ;

Schmied, R ;

Scoles, G .

JOURNAL OF CHEMICAL PHYSICS, 2001, 115 (22) :10090-10110

[7] Direction of the transition dipole moment of nitrobenzene determined from oriented molecules in a uniform electric field [J].

Castle, KJ ;

Abbott, J ;

Peng, XH ;

Kong, W .

JOURNAL OF CHEMICAL PHYSICS, 2000, 113 (04) :1415-1419

[8] Theoretical study on the excitation energies of six tautomers of guanine: Evidence for the assignment of the rare tautomers [J].

Chen, Hui ;

Li, Shuhua .

JOURNAL OF PHYSICAL CHEMISTRY A, 2006, 110 (45) :12360-12362

[9] Infrared spectroscopy of helium nanodroplets: novel methods for physics and chemistry [J].

Choi, M. Y. ;

Douberly, G. E. ;

Falconer, T. M. ;

Lewis, W. K. ;

Lindsay, C. M. ;

Merritt, J. M. ;

Stiles, P. L. ;

Miller, R. E. .

INTERNATIONAL REVIEWS IN PHYSICAL CHEMISTRY, 2006, 25 (1-2) :15-75

[10] Multiple isomers of uracil-water complexes: infrared spectroscopy in helium nanodroplets [J].

Choi, MY ;

Miller, RE .

PHYSICAL CHEMISTRY CHEMICAL PHYSICS, 2005, 7 (20) :3565-3573

← 1 2 3 4 5 →