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: B2PLYP/aug-cc-pVTZ

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at B2PLYP/aug-cc-pVTZ
 hartrees
Energy at 0K-245.980886
Energy at 298.15K-245.985514
HF Energy-245.678937
Nuclear repulsion energy163.385779
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 B2PLYP/aug-cc-pVTZ
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' 3320 3190 0.42      
2 A' 3296 3167 1.02      
3 A' 3285 3157 2.35      
4 A' 1567 1505 8.38      
5 A' 1524 1465 32.02      
6 A' 1357 1304 4.43      
7 A' 1280 1230 0.21      
8 A' 1166 1121 22.06      
9 A' 1120 1077 9.35      
10 A' 1099 1057 12.83      
11 A' 1071 1029 35.66      
12 A' 923 887 19.65      
13 A' 913 877 14.61      
14 A" 885 850 1.37      
15 A" 847 814 24.89      
16 A" 769 739 35.52      
17 A" 665 639 25.56      
18 A" 627 602 5.16      

Unscaled Zero Point Vibrational Energy (zpe) 12855.7 cm-1
Scaled (by 0.961) Zero Point Vibrational Energy (zpe) 12354.3 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 B2PLYP/aug-cc-pVTZ
ABC
0.33655 0.32391 0.16505

See section I.F.4 to change rotational constant units
Geometric Data calculated at B2PLYP/aug-cc-pVTZ

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
O1 -1.101 0.309 0.000
C2 0.000 1.100 0.000
N3 1.123 0.462 0.000
C4 0.753 -0.877 0.000
C5 -0.596 -0.964 0.000
H6 -0.167 2.161 0.000
H7 1.481 -1.666 0.000
H8 -1.308 -1.765 0.000

Atom - Atom Distances (Å)
  O1 C2 N3 C4 C5 H6 H7 H8
O11.35572.22982.20121.36972.07433.25142.0844
C21.35571.29172.11542.14801.07443.13793.1494
N32.22981.29171.38942.23352.13352.15863.2974
C42.20122.11541.38941.35173.17441.07402.2445
C51.36972.14802.23351.35173.15432.19251.0721
H62.07431.07442.13353.17443.15434.16754.0886
H73.25143.13792.15861.07402.19254.16752.7910
H82.08443.14943.29742.24451.07214.08862.7910

picture of Oxazole state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
O1 C2 N3 114.738 O1 C2 H6 116.729
O1 C5 C4 107.973 O1 C5 H8 116.697
C2 O1 C5 104.021 C2 N3 C4 104.130
N3 C2 H6 128.532 N3 C4 C5 109.138
N3 C4 H7 121.874 C4 C5 H8 135.330
C5 C4 H7 128.988
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B2PLYP/aug-cc-pVTZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 O -0.251      
2 C -0.307      
3 N -0.441      
4 C -0.256      
5 C -0.389      
6 H 0.585      
7 H 0.505      
8 H 0.555      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -1.326 -0.819 0.000 1.559
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -31.829 -1.326 0.000
y -1.326 -23.077 0.000
z 0.000 0.000 -30.274
Traceless
 xyz
x -5.154 -1.326 0.000
y -1.326 7.974 0.000
z 0.000 0.000 -2.821
Polar
3z2-r2-5.642
x2-y2-8.752
xy-1.326
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 7.021 0.132 0.000
y 0.132 7.743 0.000
z 0.000 0.000 4.505


<r2> (average value of r2) Å2
<r2> 76.011
(<r2>)1/2 8.718