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: MP3/6-31+G**

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at MP3/6-31+G**
 hartrees
Energy at 0K-245.396912
Energy at 298.15K-245.401529
HF Energy-244.643655
Nuclear repulsion energy163.092970
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 MP3/6-31+G**
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' 3405 3168 0.58      
2 A' 3386 3151 0.25      
3 A' 3373 3138 2.31      
4 A' 1645 1530 16.17      
5 A' 1594 1484 37.18      
6 A' 1412 1314 3.23      
7 A' 1319 1227 0.10      
8 A' 1229 1144 41.20      
9 A' 1153 1073 9.14      
10 A' 1142 1062 5.04      
11 A' 1108 1031 46.41      
12 A' 943 877 17.03      
13 A' 929 864 14.87      
14 A" 861 801 8.17      
15 A" 835 777 31.55      
16 A" 756 704 28.73      
17 A" 656 610 31.61      
18 A" 607 565 3.25      

Unscaled Zero Point Vibrational Energy (zpe) 13175.9 cm-1
Scaled (by 0.9305) Zero Point Vibrational Energy (zpe) 12260.2 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 MP3/6-31+G**
ABC
0.33579 0.32216 0.16442

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP3/6-31+G**

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
O1 -1.102 0.310 0.000
C2 0.000 1.100 0.000
N3 1.128 0.465 0.000
C4 0.753 -0.879 0.000
C5 -0.600 -0.965 0.000
H6 -0.165 2.160 0.000
H7 1.480 -1.669 0.000
H8 -1.311 -1.766 0.000

Atom - Atom Distances (Å)
  O1 C2 N3 C4 C5 H6 H7 H8
O11.35612.23522.20381.37022.07413.25322.0866
C21.35611.29392.11762.15011.07323.13973.1519
N32.23521.29391.39552.24242.13172.16333.3057
C42.20382.11761.39551.35573.17521.07322.2472
C51.37022.15012.24241.35573.15522.19541.0718
H62.07411.07322.13173.17523.15524.16784.0904
H73.25323.13972.16331.07322.19544.16782.7928
H82.08663.15193.30572.24721.07184.09042.7928

picture of Oxazole state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
O1 C2 N3 114.995 O1 C2 H6 116.777
O1 C5 C4 107.892 O1 C5 H8 116.872
C2 O1 C5 104.113 C2 N3 C4 103.820
N3 C2 H6 128.227 N3 C4 C5 109.179
N3 C4 H7 121.851 C4 C5 H8 135.236
C5 C4 H7 128.970
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability