return to home page Computational Chemistry Comparison and Benchmark DataBase Release 22 (May 2022) Standard Reference Database 101 National Institute of Standards and Technology
You are here: Calculated > Energy > Optimized > Energy

All results from a given calculation for NH2COOC2H5 (Urethane)

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

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/6-31+G**
 hartrees
Energy at 0K-322.899770
Energy at 298.15K-322.909076
HF Energy-321.894101
Nuclear repulsion energy246.718682
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/6-31+G**
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 3824 3562 45.18      
2 A 3705 3452 35.06      
3 A 3245 3023 20.52      
4 A 3230 3009 19.92      
5 A 3181 2963 18.66      
6 A 3142 2927 14.78      
7 A 3111 2898 38.56      
8 A 1895 1766 637.94      
9 A 1696 1580 131.53      
10 A 1585 1477 2.17      
11 A 1554 1448 2.66      
12 A 1537 1432 6.32      
13 A 1490 1388 11.63      
14 A 1455 1356 39.96      
15 A 1400 1304 397.16      
16 A 1345 1253 1.47      
17 A 1218 1134 5.25      
18 A 1196 1114 31.18      
19 A 1160 1081 128.35      
20 A 1139 1061 14.22      
21 A 1027 957 15.26      
22 A 890 829 15.63      
23 A 859 801 0.25      
24 A 790 736 48.94      
25 A 599 558 133.51      
26 A 582 542 47.56      
27 A 568 529 5.71      
28 A 442 412 75.27      
29 A 391 364 4.58      
30 A 265 247 0.81      
31 A 225 209 1.98      
32 A 101 94 0.54      
33 A 93 87 3.00      

Unscaled Zero Point Vibrational Energy (zpe) 24470.0 cm-1
Scaled (by 0.9316) Zero Point Vibrational Energy (zpe) 22796.3 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 MP3=FULL/6-31+G**
ABC
0.29320 0.07128 0.05881

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

Point Group is C1

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 2.544 -0.252 0.055
H2 2.692 -0.832 -0.853
H3 3.357 0.465 0.150
H4 2.568 -0.927 0.907
C5 1.220 0.477 0.003
H6 1.056 1.054 0.913
H7 1.199 1.158 -0.852
O8 0.198 -0.512 -0.135
N9 -1.381 1.162 0.075
H10 -0.762 1.836 -0.336
H11 -2.360 1.377 0.006
C12 -1.106 -0.189 -0.021
O13 -1.952 -1.048 0.050

Atom - Atom Distances (Å)
  C1 H2 H3 H4 C5 H6 H7 O8 N9 H10 H11 C12 O13
C11.08691.08831.08671.51292.15832.14972.36794.17273.93015.16823.65194.5660
H21.08691.76951.76642.14753.05792.48742.61444.62894.39475.58033.94104.7355
H31.08831.76951.76992.14222.49442.47793.31854.78964.36785.79094.51395.5211
H41.08671.76641.76992.14582.49163.05172.62114.54434.50175.51393.86054.6018
C51.51292.14752.14222.14581.09041.09331.42842.69072.42683.69132.41943.5194
H62.15833.05792.49442.49161.09041.77452.07022.57972.34053.54922.66293.7696
H72.14972.48742.47793.05171.09331.77452.07522.74192.13813.66792.79653.9508
O82.36792.61443.31852.62111.42842.07022.07522.31152.54533.18361.34902.2236
N94.17274.62894.78964.54432.69072.57972.74192.31151.00351.00451.38212.2828
H103.93014.39474.36784.50172.42682.34052.13812.54531.00351.69792.07833.1439
H115.16825.58035.79095.51393.69133.54923.66793.18361.00451.69792.00622.4595
C123.65193.94104.51393.86052.41942.66292.79651.34901.38212.07832.00621.2075
O134.56604.73555.52114.60183.51943.76963.95082.22362.28283.14392.45951.2075

picture of Urethane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C5 H6 110.961 C1 C5 H7 110.100
C1 C5 O8 107.191 H2 C1 H3 108.879
H2 C1 H4 108.712 H2 C1 C5 110.307
H3 C1 H4 108.924 H3 C1 C5 109.799
H4 C1 C5 110.185 C5 O8 C12 121.155
H6 C5 H7 108.703 H6 C5 O8 109.829
H7 C5 O8 110.051 O8 C12 N9 115.639
O8 C12 O13 120.771 N9 C12 O13 123.513
H10 N9 H11 115.466 H10 N9 C12 120.364
H11 N9 C12 113.467
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability