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All results from a given calculation for C4H5NO (3-Methylisoxazole)

using model chemistry: MP3=FULL/6-31G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C1 1A
Energy calculated at MP3=FULL/6-31G*
 hartrees
Energy at 0K-284.528437
Energy at 298.15K-284.534928
HF Energy-283.629301
Nuclear repulsion energy223.525026
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 MP3=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 3347 3140 0.31      
2 A 3325 3120 0.03      
3 A 3212 3014 5.18      
4 A 3182 2986 11.41      
5 A 3113 2921 12.03      
6 A 1696 1592 20.19      
7 A 1571 1474 8.89      
8 A 1549 1453 5.46      
9 A 1541 1446 8.67      
10 A 1509 1416 47.08      
11 A 1467 1377 1.30      
12 A 1338 1255 1.06      
13 A 1212 1138 17.87      
14 A 1122 1052 10.07      
15 A 1100 1033 1.94      
16 A 1071 1005 2.91      
17 A 1008 945 25.73      
18 A 1006 944 2.09      
19 A 941 883 10.97      
20 A 860 807 3.18      
21 A 784 736 41.71      
22 A 678 636 6.36      
23 A 658 617 0.40      
24 A 614 576 6.74      
25 A 343 322 6.47      
26 A 275 258 4.44      
27 A 124 116 0.07      

Unscaled Zero Point Vibrational Energy (zpe) 19323.1 cm-1
Scaled (by 0.9383) Zero Point Vibrational Energy (zpe) 18130.8 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 MP3=FULL/6-31G*
ABC
0.30620 0.11777 0.08643

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP3=FULL/6-31G*

Point Group is C1

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 2.131 0.022 0.000
H2 2.517 0.537 0.885
H3 2.499 -1.006 0.000
H4 2.517 0.536 -0.885
C5 -1.479 0.574 0.000
O6 -1.376 -0.765 0.000
N7 -0.036 -1.102 -0.000
C8 0.635 0.021 0.000
C9 -0.253 1.149 -0.000
H10 0.000 2.199 -0.000
H11 -2.484 0.970 0.000

Atom - Atom Distances (Å)
  C1 H2 H3 H4 C5 O6 N7 C8 C9 H10 H11
C11.09411.09161.09413.65193.59392.44091.49582.63693.04624.7118
H21.09411.77811.76994.09334.19913.16022.14272.97193.14385.0979
H31.09161.77811.77814.28013.88232.53662.12813.49534.06385.3610
H41.09411.76991.77814.09334.19913.16002.14272.97193.14385.0980
C53.65194.09334.28014.09331.34242.21182.18511.35472.19761.0809
O63.59394.19913.88234.19911.34241.38202.15912.21933.26762.0592
N72.44093.16022.53663.16002.21181.38201.30862.26213.30143.2082
C81.49582.14272.12812.14272.18512.15911.30861.43562.26833.2607
C92.63692.97193.49532.97191.35472.21932.26211.43561.07962.2388
H103.04623.14384.06383.14382.19763.26763.30142.26831.07962.7717
H114.71185.09795.36105.09801.08092.05923.20823.26072.23882.7717

picture of 3-Methylisoxazole state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C8 N7 120.863 C1 C8 C9 128.179
H2 C1 H3 108.878 H2 C1 H4 107.966
H2 C1 C8 110.693 H3 C1 H4 108.877
H3 C1 C8 109.682 H4 C1 C8 110.691
C5 O6 N7 108.544 C5 C9 C8 103.053
C5 C9 H10 128.701 O6 C5 C9 110.742
O6 C5 H11 115.948 O6 N7 C8 106.703
N7 C8 C9 110.959 C8 C9 H10 128.246
C9 C5 H11 133.310
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability