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 (Isoxazole)

using model chemistry: B2PLYP=FULL/daug-cc-pVDZ

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=FULL/daug-cc-pVDZ
 hartrees
Energy at 0K-245.847870
Energy at 298.15K 
HF Energy-245.581979
Nuclear repulsion energy161.195519
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=FULL/daug-cc-pVDZ
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' 3313 3313 0.10 134.81 0.09 0.17
2 A' 3290 3290 0.34 49.37 0.71 0.83
3 A' 3270 3270 0.51 92.76 0.38 0.55
4 A' 1583 1583 9.68 5.45 0.01 0.01
5 A' 1462 1462 31.87 35.35 0.23 0.38
6 A' 1392 1392 4.02 6.24 0.02 0.03
7 A' 1235 1235 5.05 18.00 0.07 0.13
8 A' 1145 1145 21.78 4.14 0.30 0.46
9 A' 1117 1117 6.40 14.07 0.05 0.10
10 A' 1042 1042 8.00 2.65 0.68 0.81
11 A' 926 926 10.18 2.78 0.65 0.79
12 A' 908 908 1.09 0.66 0.48 0.65
13 A' 861 861 22.48 7.69 0.12 0.21
14 A" 907 907 6.71 0.15 0.75 0.86
15 A" 869 869 0.05 0.72 0.75 0.86
16 A" 775 775 63.81 0.11 0.75 0.86
17 A" 641 641 2.15 0.15 0.75 0.86
18 A" 605 605 12.92 0.41 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 12669.8 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 12669.8 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=FULL/daug-cc-pVDZ
ABC
0.32417 0.31747 0.16039

See section I.F.4 to change rotational constant units
Geometric Data calculated at B2PLYP=FULL/daug-cc-pVDZ

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 1.131 0.366 0.000
C2 0.622 -0.966 0.000
C3 0.000 1.132 0.000
N4 -0.697 -0.997 0.000
O5 -1.098 0.348 0.000
H6 2.162 0.697 0.000
H7 1.164 -1.905 0.000
H8 -0.181 2.201 0.000

Atom - Atom Distances (Å)
  C1 C2 C3 N4 O5 H6 H7 H8
C11.42621.36642.28092.22931.08222.27202.2555
C21.42622.18811.31922.16382.26631.08523.2662
C31.36642.18812.24041.34902.20563.25321.0834
N42.28091.31922.24041.40333.32312.07143.2386
O52.22932.16381.34901.40333.27843.19302.0666
H61.08222.26632.20563.32313.27842.78682.7844
H72.27201.08523.25322.07143.19302.78684.3207
H82.25553.26621.08343.23862.06662.78444.3207

picture of Isoxazole state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 N4 112.304 C1 C2 H7 129.051
C1 C3 O5 110.362 C1 C3 H8 133.727
C2 C1 C3 103.148 C2 C1 H6 128.717
C2 N4 O5 105.227 C3 C1 H6 128.136
C3 O5 N4 108.958 N4 C2 H7 118.645
O5 C3 H8 115.911
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability