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All results from a given calculation for C3H3NO (Oxazole)

using model chemistry: MP2/6-31G(2df,p)

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at MP2/6-31G(2df,p)
 hartrees
Energy at 0K-245.513453
Energy at 298.15K-245.518081
HF Energy-244.654300
Nuclear repulsion energy163.299805
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 MP2/6-31G(2df,p)
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' 3357 3171 0.38      
2 A' 3336 3151 0.87      
3 A' 3326 3142 2.24      
4 A' 1556 1470 7.52      
5 A' 1524 1439 23.97      
6 A' 1365 1289 5.77      
7 A' 1282 1211 1.08      
8 A' 1207 1140 33.21      
9 A' 1154 1090 5.92      
10 A' 1123 1061 3.61      
11 A' 1101 1040 31.78      
12 A' 924 872 18.42      
13 A' 911 861 13.90      
14 A" 859 812 3.08      
15 A" 835 788 25.64      
16 A" 769 726 21.33      
17 A" 674 636 21.49      
18 A" 635 600 1.89      

Unscaled Zero Point Vibrational Energy (zpe) 12968.4 cm-1
Scaled (by 0.9445) Zero Point Vibrational Energy (zpe) 12248.7 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 MP2/6-31G(2df,p)
ABC
0.33923 0.32070 0.16485

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2/6-31G(2df,p)

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
O1 -1.107 0.312 0.000
C2 0.000 1.091 0.000
N3 1.135 0.458 0.000
C4 0.756 -0.875 0.000
C5 -0.602 -0.954 0.000
H6 -0.171 2.154 0.000
H7 1.481 -1.670 0.000
H8 -1.323 -1.751 0.000

Atom - Atom Distances (Å)
  O1 C2 N3 C4 C5 H6 H7 H8
O11.35352.24672.20871.36312.06583.25992.0739
C21.35351.29942.10632.13171.07663.13313.1345
N32.24671.29941.38642.23872.14032.15613.3049
C42.20872.10631.38641.35993.16761.07622.2558
C51.36312.13172.23871.35993.13752.20291.0746
H62.06581.07662.14033.16763.13754.16554.0708
H73.25993.13312.15611.07622.20294.16552.8059
H82.07393.13453.30492.25581.07464.07082.8059

picture of Oxazole state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
O1 C2 N3 115.733 O1 C2 H6 115.981
O1 C5 C4 108.417 O1 C5 H8 116.087
C2 O1 C5 103.389 C2 N3 C4 103.253
N3 C2 H6 128.286 N3 C4 C5 109.207
N3 C4 H7 121.713 C4 C5 H8 135.496
C5 C4 H7 129.080
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability