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All results from a given calculation for NH2COOC2H5 (Urethane)

using model chemistry: MP2/SDD

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/SDD
 hartrees
Energy at 0K-322.383353
Energy at 298.15K-322.392177
HF Energy-321.768617
Nuclear repulsion energy239.246027
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/SDD
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 3780 3649 46.54      
2 A 3628 3502 50.35      
3 A 3164 3054 32.19      
4 A 3140 3031 29.47      
5 A 3092 2985 35.39      
6 A 3038 2932 25.00      
7 A 3023 2918 42.15      
8 A 1719 1659 386.95      
9 A 1673 1615 201.58      
10 A 1553 1499 2.79      
11 A 1541 1488 8.12      
12 A 1522 1470 7.56      
13 A 1465 1415 10.86      
14 A 1426 1376 17.97      
15 A 1313 1267 0.36      
16 A 1298 1253 395.92      
17 A 1179 1138 5.12      
18 A 1150 1110 5.37      
19 A 1080 1043 49.69      
20 A 1051 1015 105.58      
21 A 958 925 78.93      
22 A 870 840 0.58      
23 A 788 760 32.91      
24 A 703 679 40.38      
25 A 542 523 4.09      
26 A 535 516 162.55      
27 A 518 500 5.08      
28 A 365 353 0.67      
29 A 356 344 210.78      
30 A 246 237 0.00      
31 A 207 200 3.45      
32 A 97 93 0.00      
33 A 55 53 0.64      

Unscaled Zero Point Vibrational Energy (zpe) 23537.3 cm-1
Scaled (by 0.9653) Zero Point Vibrational Energy (zpe) 22720.6 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/SDD
ABC
0.27893 0.06657 0.05489

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

Point Group is C1

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -2.622 -0.269 0.000
H2 -2.690 -0.907 0.896
H3 -3.469 0.441 -0.000
H4 -2.690 -0.907 -0.895
C5 -1.291 0.506 -0.000
H6 -1.190 1.131 -0.908
H7 -1.190 1.131 0.907
O8 -0.217 -0.538 -0.000
N9 1.437 1.189 0.000
H10 0.733 1.914 -0.000
H11 2.415 1.456 0.000
C12 1.157 -0.183 0.000
O13 2.037 -1.074 0.000

Atom - Atom Distances (Å)
  C1 H2 H3 H4 C5 H6 H7 O8 N9 H10 H11 C12 O13
C11.10161.10531.10161.54022.19892.19882.42014.31264.00255.32433.77994.7277
H21.10161.79621.79142.18043.10702.53022.65574.71384.52455.69584.01524.8134
H31.10531.79621.79622.17862.54792.54793.39624.96224.45205.97084.66765.7102
H41.10161.79141.79622.18042.53043.10702.65564.71404.52475.69604.01524.8133
C51.54022.18042.17862.18041.10651.10651.49842.81202.46543.82612.54323.6840
H62.19893.10702.54792.53041.10651.81472.13512.77992.26573.73202.83904.0126
H72.19882.53022.54793.10701.10651.81472.13512.77972.26543.73182.83894.0126
O82.42012.65573.39622.65561.49842.13512.13512.39122.63013.30231.41902.3164
N94.31264.71384.96224.71402.81202.77992.77972.39121.01121.01421.40002.3413
H104.00254.52454.45204.52472.46542.26572.26542.63011.01121.74412.13993.2609
H115.32435.69585.97085.69603.82613.73203.73183.30231.01421.74412.06622.5584
C123.77994.01524.66764.01522.54322.83902.83891.41901.40002.13992.06621.2524
O134.72774.81345.71024.81333.68404.01264.01262.31642.34133.26092.55841.2524

picture of Urethane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C5 H6 111.306 C1 C5 H7 111.301
C1 C5 O8 105.581 H2 C1 H3 108.962
H2 C1 H4 108.806 H2 C1 C5 110.147
H3 C1 H4 108.962 H3 C1 C5 109.785
H4 C1 C5 110.148 C5 O8 C12 121.300
H6 C5 H7 110.167 H6 C5 O8 109.175
H7 C5 O8 109.177 O8 C12 N9 116.034
O8 C12 O13 120.122 N9 C12 O13 123.844
H10 N9 H11 118.879 H10 N9 C12 124.323
H11 N9 C12 116.799
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability