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

using model chemistry: MP2/TZVP

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C1 1A
Energy calculated at MP2/TZVP
 hartrees
Energy at 0K-284.653106
Energy at 298.15K-284.659382
HF Energy-283.717716
Nuclear repulsion energy223.399977
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/TZVP
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 3160 0.06      
2 A 3312 3140 0.29      
3 A 3198 3032 5.11      
4 A 3174 3009 10.12      
5 A 3094 2933 16.34      
6 A 1598 1515 19.48      
7 A 1523 1444 13.49      
8 A 1499 1421 14.52      
9 A 1491 1413 9.32      
10 A 1439 1364 9.48      
11 A 1426 1351 7.94      
12 A 1308 1240 0.31      
13 A 1184 1122 20.50      
14 A 1088 1032 10.66      
15 A 1066 1010 0.01      
16 A 1036 982 1.75      
17 A 993 941 1.60      
18 A 967 917 15.55      
19 A 918 870 11.08      
20 A 783 742 0.53      
21 A 731 692 51.87      
22 A 666 631 4.87      
23 A 598 566 0.48      
24 A 560 531 5.61      
25 A 340 322 5.95      
26 A 227 215 3.82      
27 A 105 100 0.01      

Unscaled Zero Point Vibrational Energy (zpe) 18827.4 cm-1
Scaled (by 0.9479) Zero Point Vibrational Energy (zpe) 17846.5 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/TZVP
ABC
0.30581 0.11778 0.08640

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2/TZVP

Point Group is C1

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 2.085 0.013 -0.000
H2 2.462 0.202 1.004
H3 2.470 -0.948 -0.341
H4 2.453 0.794 -0.664
C5 -1.445 0.607 -0.001
O6 -1.367 -0.744 0.002
N7 -0.079 -1.091 -0.002
C8 0.622 0.008 0.001
C9 -0.198 1.094 0.003
H10 0.076 2.097 -0.005
H11 -2.352 1.117 -0.005

Atom - Atom Distances (Å)
  C1 H2 H3 H4 C5 O6 N7 C8 C9 H10 H11
C11.08931.08991.08933.57923.53332.42911.46272.52602.89424.5717
H21.08931.76961.76944.05434.06933.02362.10482.97903.20895.0025
H31.08991.76961.77254.22643.85792.57602.10873.37793.88795.2563
H41.08931.76941.77253.95814.17103.22562.10052.74972.78874.8601
C53.57924.05434.22643.95811.35252.17882.15201.33882.12951.0404
O63.53334.06933.85794.17101.35251.33362.12592.17793.18592.1050
N72.42913.02362.57603.22562.17881.33361.30342.18843.19153.1683
C81.46272.10482.10872.10052.15202.12591.30341.36132.15913.1738
C92.52602.97903.37792.74971.33882.17792.18841.36131.03952.1537
H102.89423.20893.88792.78872.12953.18593.19152.15911.03952.6184
H114.57175.00255.25634.86011.04042.10503.16833.17382.15372.6184

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 122.745 C1 C8 C9 126.849
H2 C1 H3 108.588 H2 C1 H4 108.614
H2 C1 C8 110.271 H3 C1 H4 108.846
H3 C1 C8 110.551 H4 C1 C8 109.924
C5 O6 N7 108.413 C5 C9 C8 105.688
C5 C9 H10 126.668 O6 C5 C9 108.044
O6 C5 H11 122.674 O6 N7 C8 107.447
N7 C8 C9 110.406 C8 C9 H10 127.639
C9 C5 H11 129.282
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability