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All results from a given calculation for C3H3NO (Isoxazole)

using model chemistry: MP2=FULL/3-21G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at MP2=FULL/3-21G*
 hartrees
Energy at 0K-243.726304
Energy at 298.15K 
HF Energy-243.202266
Nuclear repulsion energy157.192288
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 MP2=FULL/3-21G*
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' 3335 3161 0.94 108.67 0.11 0.20
2 A' 3309 3137 0.33 37.15 0.70 0.82
3 A' 3293 3121 0.81 74.33 0.46 0.63
4 A' 1529 1449 7.18 11.16 0.14 0.25
5 A' 1391 1319 26.56 5.09 0.70 0.82
6 A' 1359 1288 9.76 15.19 0.38 0.55
7 A' 1184 1123 3.93 12.19 0.26 0.42
8 A' 1155 1095 13.81 4.01 0.75 0.86
9 A' 1079 1023 0.80 6.09 0.17 0.29
10 A' 1017 964 11.91 1.19 0.75 0.85
11 A' 937 888 3.31 6.09 0.53 0.69
12 A' 897 850 0.38 2.87 0.32 0.49
13 A' 818 775 11.26 7.46 0.13 0.23
14 A" 875 829 11.32 2.15 0.75 0.86
15 A" 858 813 1.31 1.02 0.75 0.86
16 A" 779 739 74.22 1.69 0.75 0.86
17 A" 633 600 8.58 0.29 0.75 0.86
18 A" 589 558 7.15 1.33 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 12518.0 cm-1
Scaled (by 0.948) Zero Point Vibrational Energy (zpe) 11867.0 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 MP2=FULL/3-21G*
ABC
0.30966 0.30035 0.15247

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2=FULL/3-21G*

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 1.133 0.393 0.000
C2 0.661 -0.963 0.000
C3 0.000 1.161 0.000
N4 -0.685 -1.066 0.000
O5 -1.149 0.354 0.000
H6 2.156 0.730 0.000
H7 1.244 -1.871 0.000
H8 -0.181 2.223 0.000

Atom - Atom Distances (Å)
  C1 C2 C3 N4 O5 H6 H7 H8
C11.43511.36912.33032.28221.07722.26632.2534
C21.43512.22481.34992.23882.25801.07913.2956
C31.36912.22482.33011.40432.19873.27771.0771
N42.33031.34992.33011.49413.36052.09003.3274
O52.28222.23881.40431.49413.32633.26792.1048
H61.07722.25802.19873.36053.32632.75592.7735
H72.26631.07913.27772.09003.26792.75594.3352
H82.25343.29561.07713.32742.10482.77354.3352

picture of Isoxazole state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 N4 113.557 C1 C2 H7 128.129
C1 C3 O5 110.749 C1 C3 H8 133.846
C2 C1 C3 104.983 C2 C1 H6 127.419
C2 N4 O5 103.736 C3 C1 H6 127.598
C3 O5 N4 106.975 N4 C2 H7 118.315
O5 C3 H8 115.405
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability