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All results from a given calculation for C3H3NO (Oxazole)

using model chemistry: CBS-Q

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at CBS-Q
 hartrees
Energy at 0K-245.696155
Energy at 298.15K-245.691692
HF Energy-244.630089
Nuclear repulsion energy165.364949
The energy at 298.15K was derived from the energy at 0K and an integrated heat capacity that used the calculated vibrational frequencies.
Vibrational Frequencies calculated at CBS-Q
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
(Å4/u)
Dep P Dep U
1 A' 3491 3491 1.17      
2 A' 3463 3463 1.63      
3 A' 3450 3450 4.12      
4 A' 1775 1775 35.30      
5 A' 1712 1712 32.43      
6 A' 1498 1498 11.56      
7 A' 1392 1392 0.26      
8 A' 1291 1291 37.88      
9 A' 1222 1222 17.52      
10 A' 1188 1188 12.61      
11 A' 1158 1158 47.62      
12 A' 1016 1016 15.62      
13 A' 994 994 24.01      
14 A" 1008 1008 1.65      
15 A" 984 984 6.03      
16 A" 868 868 34.23      
17 A" 711 711 34.76      
18 A" 672 672 11.90      

Unscaled Zero Point Vibrational Energy (zpe) 13946.5 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 13946.5 cm-1
See section III.C.1 List or set vibrational scaling factors to change the scale factors used here.
See section III.C.2 Calculate a vibrational scaling factor for a given set of molecules to determine the least squares best scaling factor.
Rotational Constants (cm-1) from geometry optimized at CBS-Q
ABC
0.33761 0.31769 0.16367

See section I.F.4 to change rotational constant units
Geometric Data calculated at CBS-Q

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
O1 -1.078 0.306 0.000
C2 0.000 1.083 0.000
N3 1.105 0.467 0.000
C4 0.738 -0.868 0.000
C5 -0.589 -0.955 0.000
H6 -0.168 2.139 0.000
H7 1.466 -1.653 0.000
H8 -1.300 -1.751 0.000

Atom - Atom Distances (Å)
  O1 C2 N3 C4 C5 H6 H7 H8
O11.32932.18912.16301.35252.04723.21082.0689
C21.32931.26492.08622.12121.06963.10383.1182
N32.18911.26491.38452.21112.10162.15043.2715
C42.16302.08621.38451.32973.14111.07012.2213
C51.35252.12122.21111.32973.12272.16971.0678
H62.04721.06962.10163.14113.12274.12924.0519
H73.21083.10382.15041.07012.16974.12922.7674
H82.06893.11823.27152.22131.06784.05192.7674

picture of Oxazole state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
O1 C2 N3 115.070 O1 C2 H6 116.745
O1 C5 C4 107.494 O1 C5 H8 116.995
C2 O1 C5 104.549 C2 N3 C4 103.800
N3 C2 H6 128.185 N3 C4 C5 109.087
N3 C4 H7 121.823 C4 C5 H8 135.511
C5 C4 H7 129.091
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability