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

using model chemistry: MP2/CEP-121G

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/CEP-121G
 hartrees
Energy at 0K-51.841504
Energy at 298.15K-51.850257
HF Energy-51.251580
Nuclear repulsion energy126.542030
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/CEP-121G
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 3131 3056 10.98      
2 A 3040 2967 49.80      
3 A 3025 2953 35.55      
4 A 2997 2925 16.27      
5 A 1616 1577 55.88      
6 A 1539 1502 1.22      
7 A 1522 1485 5.77      
8 A 1516 1479 11.66      
9 A 1461 1426 12.79      
10 A 1363 1330 7.34      
11 A 1351 1319 1.23      
12 A 1222 1193 97.32      
13 A 1074 1049 6.14      
14 A 949 927 2.35      
15 A 913 891 30.99      
16 A 883 862 74.62      
17 A 814 794 37.00      
18 A 714 697 8.61      
19 A 627 612 5.42      
20 A 333 325 7.36      
21 A 3126 3051 48.58      
22 A 3096 3022 15.34      
23 A 3093 3018 5.73      
24 A 1498 1462 11.72      
25 A 1231 1202 0.39      
26 A 1171 1142 1.13      
27 A 1119 1092 0.03      
28 A 1086 1060 0.98      
29 A 829 809 0.25      
30 A 546 533 4.45      
31 A 237 231 15.76      
32 A 135 131 1.23      
33 A 59 58 0.42      

Unscaled Zero Point Vibrational Energy (zpe) 23657.1 cm-1
Scaled (by 0.976) Zero Point Vibrational Energy (zpe) 23089.3 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/CEP-121G
ABC
0.24257 0.10678 0.07747

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2/CEP-121G

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.385 2.189 0.000
C2 0.501 -1.584 0.000
C3 -1.057 -1.313 0.000
N4 -1.214 0.213 0.000
O5 1.116 -0.193 0.000
C6 0.000 0.724 0.000
H7 0.859 -2.092 0.905
H8 0.859 -2.092 -0.905
H9 -1.553 -1.712 0.898
H10 -1.553 -1.712 -0.898
H11 0.988 2.421 0.891
H12 0.988 2.421 -0.891
H13 -0.529 2.797 0.000

Atom - Atom Distances (Å)
  C1 C2 C3 N4 O5 C6 H7 H8 H9 H10 H11 H12 H13
C13.77483.78782.54202.49211.51444.40174.40174.44754.44751.10101.10101.0976
C23.77481.58152.48321.52072.36201.09841.09842.24462.24464.13194.13194.5001
C33.78781.58151.53402.44522.29582.25822.25821.10001.10004.35034.35034.1440
N42.54202.48321.53402.36491.31723.22933.22932.15082.15083.24333.24332.6733
O52.49211.52072.44522.36491.44502.11942.11943.19933.19932.76522.76523.4129
C61.51442.36202.29581.31721.44503.08083.08083.02553.02552.15632.15632.1389
H74.40171.09842.25823.22932.11943.08081.81072.44163.03514.51524.85965.1624
H84.40171.09842.25823.22932.11943.08081.81073.03512.44164.85964.51525.1624
H94.44752.24461.10002.15083.19933.02552.44163.03511.79514.85185.17114.7101
H104.44752.24461.10002.15083.19933.02553.03512.44161.79515.17114.85184.7101
H111.10104.13194.35033.24332.76522.15634.51524.85964.85185.17111.78291.7993
H121.10104.13194.35033.24332.76522.15634.85964.51525.17114.85181.78291.7993
H131.09764.50014.14402.67333.41292.13895.16245.16244.71014.71011.79931.7993

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 127.586 C1 C6 O5 114.706
C2 C3 N4 105.693 C2 C3 H9 112.429
C2 C3 H10 112.429 C2 O5 C6 105.556
C3 C2 O5 104.024 C3 C2 H7 113.620
C3 C2 H8 113.620 C3 N4 C6 107.020
N4 C3 H9 108.354 N4 C3 H10 108.354
N4 C6 O5 117.708 O5 C2 H7 106.927
O5 C2 H8 106.927 C6 C1 H11 110.060
C6 C1 H12 110.060 C6 C1 H13 108.896
H7 C2 H8 111.017 H9 C3 H10 109.370
H11 C1 H12 108.127 H11 C1 H13 109.845
H12 C1 H13 109.845
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability