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All results from a given calculation for C3H3NO (Isoxazole)

using model chemistry: MP2=FULL/STO-3G

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/STO-3G
 hartrees
Energy at 0K-241.793664
Energy at 298.15K 
HF Energy-241.480522
Nuclear repulsion energy157.159815
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/STO-3G
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
(Å4/u)
Dep P Dep U
1 A' 3594 3195 15.99 55.24 0.12 0.22
2 A' 3562 3166 15.42 19.03 0.44 0.62
3 A' 3555 3160 9.34 58.69 0.55 0.71
4 A' 1652 1469 2.64 6.00 0.22 0.37
5 A' 1487 1322 23.70 5.20 0.59 0.74
6 A' 1450 1289 18.11 10.95 0.50 0.66
7 A' 1287 1144 5.22 0.73 0.04 0.08
8 A' 1213 1078 5.20 12.77 0.38 0.56
9 A' 1178 1047 3.14 3.56 0.18 0.31
10 A' 1113 989 0.17 7.25 0.58 0.74
11 A' 1058 941 5.10 4.85 0.13 0.22
12 A' 949 843 0.81 4.42 0.74 0.85
13 A' 927 824 2.02 0.09 0.74 0.85
14 A" 928 825 0.02 0.41 0.75 0.86
15 A" 883 784 1.29 2.31 0.75 0.86
16 A" 803 714 23.17 1.15 0.75 0.86
17 A" 646 574 2.50 0.21 0.75 0.86
18 A" 605 538 0.17 0.56 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 13444.3 cm-1
Scaled (by 0.8889) Zero Point Vibrational Energy (zpe) 11950.6 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 MP2=FULL/STO-3G
ABC
0.30768 0.30245 0.15252

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 1.149 0.386 0.000
C2 0.667 -0.972 0.000
C3 0.000 1.156 0.000
N4 -0.718 -1.030 0.000
O5 -1.140 0.341 0.000
H6 2.187 0.732 0.000
H7 1.243 -1.906 0.000
H8 -0.180 2.240 0.000

Atom - Atom Distances (Å)
  C1 C2 C3 N4 O5 H6 H7 H8
C11.44051.38282.34272.28881.09422.29422.2808
C21.44052.22971.38632.23342.28271.09753.3213
C31.38282.22972.30051.40112.22743.30471.0987
N42.34271.38632.30051.43423.39702.14753.3134
O52.28882.23341.40111.43423.34933.27502.1273
H61.09422.28272.22743.39703.34932.80202.8064
H72.29421.09753.30472.14753.27502.80204.3833
H82.28083.32131.09873.31342.12732.80644.3833

picture of Isoxazole state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 N4 111.927 C1 C2 H7 128.860
C1 C3 O5 110.605 C1 C3 H8 133.275
C2 C1 C3 104.309 C2 C1 H6 127.952
C2 N4 O5 104.703 C3 C1 H6 127.740
C3 O5 N4 108.457 N4 C2 H7 119.213
O5 C3 H8 116.120
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability