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All results from a given calculation for C4H7NO (Oxazole, 4,5-dihydro-2-methyl-)

using model chemistry: MP2/6-31G

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C1 1A'
Energy calculated at MP2/6-31G
 hartrees
Energy at 0K-285.301245
Energy at 298.15K-285.310151
HF Energy-284.700196
Nuclear repulsion energy235.479081
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 MP2/6-31G
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 3194 3056 6.30      
2 A 3118 2983 30.26      
3 A 3105 2970 25.88      
4 A 3082 2949 8.60      
5 A 1678 1606 56.42      
6 A 1589 1521 0.49      
7 A 1573 1505 0.61      
8 A 1560 1493 13.14      
9 A 1488 1423 11.89      
10 A 1380 1320 10.23      
11 A 1355 1297 0.72      
12 A 1256 1202 97.20      
13 A 1097 1049 4.03      
14 A 958 916 1.30      
15 A 924 884 27.04      
16 A 894 856 70.45      
17 A 847 810 25.80      
18 A 734 702 8.58      
19 A 650 622 4.50      
20 A 349 334 7.25      
21 A 3187 3049 35.91      
22 A 3160 3024 8.84      
23 A 3156 3019 3.60      
24 A 1550 1483 9.97      
25 A 1280 1224 0.24      
26 A 1198 1146 0.56      
27 A 1137 1088 0.87      
28 A 1112 1064 2.04      
29 A 863 826 0.22      
30 A 575 550 6.75      
31 A 241 231 14.85      
32 A 139 133 1.28      
33 A 100 96 0.42      

Unscaled Zero Point Vibrational Energy (zpe) 24264.0 cm-1
Scaled (by 0.9568) Zero Point Vibrational Energy (zpe) 23215.8 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 MP2/6-31G
ABC
0.24744 0.10908 0.07913

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2/6-31G

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.352 2.167 0.000
C2 0.534 -1.560 0.000
C3 -1.012 -1.320 0.000
N4 -1.191 0.191 0.000
O5 1.122 -0.168 0.000
C6 0.000 0.714 0.000
H7 0.899 -2.066 0.899
H8 0.899 -2.066 -0.899
H9 -1.500 -1.730 0.891
H10 -1.500 -1.730 -0.891
H11 0.948 2.414 0.888
H12 0.948 2.414 -0.888
H13 -0.571 2.756 0.000

Atom - Atom Distances (Å)
  C1 C2 C3 N4 O5 C6 H7 H8 H9 H10 H11 H12 H13
C13.73113.74402.50722.45851.49484.36164.36164.40584.40581.09761.09761.0946
C23.73111.56402.45721.51082.33561.09431.09432.22712.22714.09304.09304.4546
C33.74401.56401.52112.42452.27172.23992.23991.09591.09594.30954.30954.0995
N42.50722.45721.52112.34011.30093.20453.20452.13992.13993.21043.21042.6391
O52.45851.51082.42452.34011.42692.11162.11163.17933.17932.73622.73623.3782
C61.49482.33562.27171.30091.42693.05693.05693.00313.00312.13942.13942.1200
H74.36161.09432.23993.20452.11163.05691.79722.42303.01244.48034.82345.1203
H84.36161.09432.23993.20452.11163.05691.79723.01242.42304.82344.48035.1203
H94.40582.22711.09592.13993.17933.00312.42303.01241.78254.81325.13154.6671
H104.40582.22711.09592.13993.17933.00313.01242.42301.78255.13154.81324.6671
H111.09764.09304.30953.21042.73622.13944.48034.82344.81325.13151.77621.7918
H121.09764.09304.30953.21042.73622.13944.82344.48035.13154.81321.77621.7918
H131.09464.45464.09952.63913.37822.12005.12035.12034.66714.66711.79181.7918

picture of Oxazole, 4,5-dihydro-2-methyl- state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C6 N4 127.347 C1 C6 O5 114.566
C2 C3 N4 105.583 C2 C3 H9 112.512
C2 C3 H10 112.512 C2 O5 C6 105.285
C3 C2 O5 104.078 C3 C2 H7 113.654
C3 C2 H8 113.654 C3 N4 C6 106.967
N4 C3 H9 108.618 N4 C3 H10 108.618
N4 C6 O5 118.088 O5 C2 H7 107.218
O5 C2 H8 107.218 C6 C1 H11 110.290
C6 C1 H12 110.290 C6 C1 H13 108.931
H7 C2 H8 110.410 H9 C3 H10 108.830
H11 C1 H12 108.020 H11 C1 H13 109.648
H12 C1 H13 109.648
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability