return to home page Computational Chemistry Comparison and Benchmark DataBase Release 22 (May 2022) Standard Reference Database 101 National Institute of Standards and Technology
You are here: Calculated > Energy > Optimized > Energy

All results from a given calculation for C3H3NO (Oxazole)

using model chemistry: QCISD/6-31G

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at QCISD/6-31G
 hartrees
Energy at 0K-245.025098
Energy at 298.15K-245.029567
HF Energy-244.494952
Nuclear repulsion energy158.965487
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 QCISD/6-31G
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
4/u)
Dep P Dep U
1 A' 3319 3198 0.40      
2 A' 3309 3189 0.16      
3 A' 3281 3161 1.53      
4 A' 1558 1502 3.01      
5 A' 1505 1450 26.13      
6 A' 1329 1281 12.52      
7 A' 1263 1217 0.52      
8 A' 1162 1120 11.84      
9 A' 1038 1000 4.70      
10 A' 1017 980 40.23      
11 A' 997 961 16.73      
12 A' 892 859 4.24      
13 A' 875 843 48.89      
14 A" 828 798 0.01      
15 A" 810 780 35.08      
16 A" 739 712 22.10      
17 A" 633 610 34.31      
18 A" 586 564 13.70      

Unscaled Zero Point Vibrational Energy (zpe) 12570.8 cm-1
Scaled (by 0.9636) Zero Point Vibrational Energy (zpe) 12113.2 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 QCISD/6-31G
ABC
0.31573 0.30876 0.15610

See section I.F.4 to change rotational constant units
Geometric Data calculated at QCISD/6-31G

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
O1 -1.115 0.312 0.000
C2 0.000 1.154 0.000
N3 1.131 0.478 0.000
C4 0.766 -0.906 0.000
C5 -0.604 -1.006 0.000
H6 -0.162 2.224 0.000
H7 1.509 -1.694 0.000
H8 -1.316 -1.820 0.000

Atom - Atom Distances (Å)
  O1 C2 N3 C4 C5 H6 H7 H8
O11.39792.25282.24181.41412.13643.30362.1413
C21.39791.31812.19872.24381.08173.22393.2528
N32.25281.31811.43152.28352.17292.20503.3573
C42.24182.19871.43151.37423.26521.08292.2745
C51.41412.24382.28351.37423.26042.22231.0814
H62.13641.08172.17293.26523.26044.25994.2054
H73.30363.22392.20501.08292.22234.25992.8284
H82.14133.25283.35732.27451.08144.20542.8284

picture of Oxazole state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
O1 C2 N3 112.051 O1 C2 H6 118.437
O1 C5 C4 107.024 O1 C5 H8 117.588
C2 O1 C5 105.866 C2 N3 C4 106.121
N3 C2 H6 129.512 N3 C4 C5 108.939
N3 C4 H7 121.938 C4 C5 H8 135.388
C5 C4 H7 129.123
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability