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: TPSSh/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 TPSSh/6-31+G**
 hartrees
Energy at 0K-246.097465
Energy at 298.15K-246.102044
HF Energy-246.097465
Nuclear repulsion energy162.750725
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 TPSSh/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' 3322 3197 0.46      
2 A' 3306 3182 0.47      
3 A' 3283 3160 2.78      
4 A' 1577 1517 12.91      
5 A' 1531 1474 31.66      
6 A' 1364 1313 3.71      
7 A' 1278 1230 0.31      
8 A' 1170 1126 22.40      
9 A' 1129 1087 9.36      
10 A' 1099 1058 8.01      
11 A' 1074 1034 42.45      
12 A' 912 878 20.55      
13 A' 902 868 12.79      
14 A" 866 833 4.77      
15 A" 826 795 36.71      
16 A" 754 725 33.09      
17 A" 656 631 25.22      
18 A" 616 593 4.14      

Unscaled Zero Point Vibrational Energy (zpe) 12831.3 cm-1
Scaled (by 0.9625) Zero Point Vibrational Energy (zpe) 12350.2 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 TPSSh/6-31+G**
ABC
0.33507 0.32034 0.16377

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
O1 -1.106 0.310 0.000
C2 0.000 1.102 0.000
N3 1.130 0.464 0.000
C4 0.756 -0.878 0.000
C5 -0.600 -0.967 0.000
H6 -0.170 2.168 0.000
H7 1.490 -1.669 0.000
H8 -1.319 -1.769 0.000

Atom - Atom Distances (Å)
  O1 C2 N3 C4 C5 H6 H7 H8
O11.36072.24062.20831.37322.08053.26392.0896
C21.36071.29752.11952.15481.07863.14663.1601
N32.24061.29751.39242.24472.14272.16303.3139
C42.20832.11951.39241.35923.18291.07932.2587
C51.37322.15482.24471.35923.16412.20491.0772
H62.08051.07862.14273.18293.16414.18034.1011
H73.26393.14662.16301.07932.20494.18032.8110
H82.08963.16013.31392.25871.07724.10112.8110

picture of Oxazole state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
O1 C2 N3 114.873 O1 C2 H6 116.581
O1 C5 C4 107.834 O1 C5 H8 116.515
C2 O1 C5 104.030 C2 N3 C4 103.936
N3 C2 H6 128.546 N3 C4 C5 109.327
N3 C4 H7 121.606 C4 C5 H8 135.651
C5 C4 H7 129.068
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at TPSSh/6-31+G** Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 O -0.235      
2 C 0.103      
3 N -0.249      
4 C -0.128      
5 C -0.014      
6 H 0.175      
7 H 0.166      
8 H 0.181      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -1.325 -0.878 0.000 1.590
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 6.842 0.134 0.000
y 0.134 7.301 0.000
z 0.000 0.000 4.026


<r2> (average value of r2) Å2
<r2> 76.343
(<r2>)1/2 8.737