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

using model chemistry: MP2/cc-pVDZ

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/cc-pVDZ
 hartrees
Energy at 0K-284.536117
Energy at 298.15K-284.542580
HF Energy-283.648795
Nuclear repulsion energy222.215424
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/cc-pVDZ
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 3329 3171 0.08      
2 A 3306 3149 0.14      
3 A 3208 3055 4.02      
4 A 3184 3032 9.59      
5 A 3093 2946 16.93      
6 A 1600 1524 20.69      
7 A 1511 1440 13.74      
8 A 1498 1427 12.15      
9 A 1481 1411 7.24      
10 A 1436 1368 13.43      
11 A 1402 1335 0.32      
12 A 1294 1233 0.28      
13 A 1177 1121 17.93      
14 A 1076 1025 11.62      
15 A 1062 1011 1.41      
16 A 1027 979 2.42      
17 A 989 942 8.96      
18 A 974 928 4.58      
19 A 914 870 10.25      
20 A 848 807 0.03      
21 A 783 746 43.61      
22 A 666 634 4.56      
23 A 652 621 0.00      
24 A 624 594 2.87      
25 A 331 315 5.61      
26 A 270 257 5.11      
27 A 130 123 0.00      

Unscaled Zero Point Vibrational Energy (zpe) 18930.8 cm-1
Scaled (by 0.9525) Zero Point Vibrational Energy (zpe) 18031.6 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/cc-pVDZ
ABC
0.30232 0.11654 0.08548

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

Point Group is C1

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 2.139 0.019 0.000
H2 2.540 0.528 0.892
H3 2.493 -1.022 -0.001
H4 2.540 0.530 -0.891
C5 -1.494 0.574 0.000
O6 -1.376 -0.772 0.000
N7 -0.037 -1.111 -0.000
C8 0.641 0.040 -0.000
C9 -0.251 1.156 -0.000
H10 -0.010 2.218 -0.000
H11 -2.512 0.960 0.000

Atom - Atom Distances (Å)
  C1 H2 H3 H4 C5 O6 N7 C8 C9 H10 H11
C11.10211.10001.10213.67563.60302.45181.49882.64673.07494.7458
H21.10211.78961.78284.13154.22073.18072.15402.99623.18695.1483
H31.10001.78961.78964.29493.87692.53132.13533.50354.09465.3836
H41.10211.78281.78964.13134.22133.18162.15402.99533.18525.1479
C53.67564.13154.29494.13131.35112.22762.20061.37322.21431.0888
O63.60304.22073.87694.22131.35111.38122.17372.23263.28672.0715
N72.45183.18072.53133.18162.22761.38121.33502.27713.32853.2273
C81.49882.15402.13532.15402.20062.17371.33501.42862.27323.2845
C92.64672.99623.50352.99531.37322.23262.27711.42861.08822.2702
H103.07493.18694.09463.18522.21433.28673.32852.27321.08822.8003
H114.74585.14835.38365.14791.08882.07153.22733.28452.27022.8003

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 119.698 C1 C8 C9 129.389
H2 C1 H3 108.718 H2 C1 H4 107.971
H2 C1 C8 110.911 H3 C1 H4 108.720
H3 C1 C8 109.549 H4 C1 C8 110.910
C5 O6 N7 109.220 C5 C9 C8 103.503
C5 C9 H10 127.845 O6 C5 C9 110.068
O6 C5 H11 115.784 O6 N7 C8 106.296
N7 C8 C9 110.913 C8 C9 H10 128.652
C9 C5 H11 134.148
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability