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All results from a given calculation for C3H3NO (Isoxazole)

using model chemistry: B2PLYP=FULL/6-31G*

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/6-31G*
 hartrees
Energy at 0K-245.797203
Energy at 298.15K 
HF Energy-245.546334
Nuclear repulsion energy161.653701
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/6-31G*
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' 3334 3162 0.06 112.70 0.10 0.18
2 A' 3313 3143 0.01 48.82 0.73 0.85
3 A' 3293 3123 1.63 88.27 0.40 0.57
4 A' 1615 1531 7.49 2.14 0.09 0.16
5 A' 1483 1407 31.79 26.64 0.38 0.55
6 A' 1421 1347 4.76 2.29 0.12 0.22
7 A' 1261 1196 5.57 10.51 0.23 0.38
8 A' 1174 1113 19.45 4.44 0.60 0.75
9 A' 1140 1081 6.32 8.83 0.15 0.25
10 A' 1065 1010 5.78 4.22 0.68 0.81
11 A' 934 886 9.62 4.34 0.55 0.71
12 A' 919 872 1.00 1.62 0.54 0.70
13 A' 885 839 23.93 6.43 0.17 0.29
14 A" 894 848 6.13 2.60 0.75 0.86
15 A" 854 810 0.11 0.17 0.75 0.86
16 A" 784 744 49.43 1.48 0.75 0.86
17 A" 644 611 2.10 0.39 0.75 0.86
18 A" 606 575 14.07 1.14 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 12809.6 cm-1
Scaled (by 0.9484) Zero Point Vibrational Energy (zpe) 12148.6 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/6-31G*
ABC
0.32609 0.31925 0.16132

See section I.F.4 to change rotational constant units
Geometric Data calculated at B2PLYP=FULL/6-31G*

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 1.128 0.368 0.000
C2 0.621 -0.959 0.000
C3 0.000 1.129 0.000
N4 -0.694 -0.997 0.000
O5 -1.096 0.345 0.000
H6 2.155 0.695 0.000
H7 1.167 -1.892 0.000
H8 -0.186 2.192 0.000

Atom - Atom Distances (Å)
  C1 C2 C3 N4 O5 H6 H7 H8
C11.42061.36002.27692.22371.07782.26042.2471
C21.42062.17801.31582.15602.25571.08113.2521
C31.36002.17802.23661.34732.19783.23821.0790
N42.27691.31582.23661.40133.31382.06523.2293
O52.22372.15601.34731.40133.26943.18212.0587
H61.07782.25572.19783.31383.26942.76902.7779
H72.26041.08113.23822.06523.18212.76904.3017
H82.24713.25211.07903.22932.05872.77794.3017

picture of Isoxazole state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 N4 112.572 C1 C2 H7 128.753
C1 C3 O5 110.442 C1 C3 H8 133.910
C2 C1 C3 103.099 C2 C1 H6 128.552
C2 N4 O5 104.981 C3 C1 H6 128.349
C3 O5 N4 108.906 N4 C2 H7 118.675
O5 C3 H8 115.648
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability