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All results from a given calculation for C3H3NO (Oxazole)

using model chemistry: QCISD/3-21G*

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/3-21G*
 hartrees
Energy at 0K-243.768510
Energy at 298.15K-243.773035
HF Energy-243.244731
Nuclear repulsion energy158.994882
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/3-21G*
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' 3315 3186 0.18      
2 A' 3299 3171 0.03      
3 A' 3282 3154 0.92      
4 A' 1535 1475 2.53      
5 A' 1486 1428 16.31      
6 A' 1332 1280 16.89      
7 A' 1282 1232 0.12      
8 A' 1165 1120 10.15      
9 A' 1034 993 26.19      
10 A' 1014 975 6.81      
11 A' 981 943 17.58      
12 A' 888 854 0.70      
13 A' 875 841 46.52      
14 A" 882 847 0.63      
15 A" 855 822 24.24      
16 A" 780 750 38.71      
17 A" 646 621 22.48      
18 A" 601 578 17.87      

Unscaled Zero Point Vibrational Energy (zpe) 12626.0 cm-1
Scaled (by 0.9611) Zero Point Vibrational Energy (zpe) 12134.9 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/3-21G*
ABC
0.31584 0.30857 0.15608

See section I.F.4 to change rotational constant units
Geometric Data calculated at QCISD/3-21G*

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
O1 -1.118 0.311 0.000
C2 0.000 1.153 0.000
N3 1.129 0.480 0.000
C4 0.766 -0.907 0.000
C5 -0.599 -1.006 0.000
H6 -0.165 2.218 0.000
H7 1.504 -1.694 0.000
H8 -1.304 -1.820 0.000

Atom - Atom Distances (Å)
  O1 C2 N3 C4 C5 H6 H7 H8
O11.39942.25302.24331.41522.13173.30022.1391
C21.39941.31412.19762.24021.07783.21973.2465
N32.25301.31411.43372.27892.16672.20653.3483
C42.24332.19761.43371.36873.26071.07872.2629
C51.41522.24022.27891.36873.25282.21221.0773
H62.13171.07782.16673.26073.25284.25324.1956
H73.30023.21972.20651.07872.21224.25322.8105
H82.13913.24653.34832.26291.07734.19562.8105

picture of Oxazole state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
O1 C2 N3 112.218 O1 C2 H6 118.171
O1 C5 C4 107.360 O1 C5 H8 117.595
C2 O1 C5 105.485 C2 N3 C4 106.140
N3 C2 H6 129.611 N3 C4 C5 108.798
N3 C4 H7 122.233 C4 C5 H8 135.045
C5 C4 H7 128.969
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability