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All results from a given calculation for NH2COOC2H5 (Urethane)

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-62.558512
Energy at 298.15K-62.567769
HF Energy-61.638696
Nuclear repulsion energy136.998557
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 3705 3530 30.59      
2 A 3582 3413 24.34      
3 A 3197 3046 23.88      
4 A 3181 3031 21.77      
5 A 3141 2993 17.92      
6 A 3082 2936 16.31      
7 A 3056 2911 43.51      
8 A 1810 1724 491.19      
9 A 1678 1598 132.83      
10 A 1560 1487 2.09      
11 A 1535 1463 4.01      
12 A 1521 1449 7.01      
13 A 1461 1392 11.42      
14 A 1426 1359 23.06      
15 A 1349 1285 364.28      
16 A 1319 1256 2.56      
17 A 1195 1139 4.32      
18 A 1167 1112 13.70      
19 A 1122 1069 168.49      
20 A 1106 1054 30.18      
21 A 994 947 18.29      
22 A 859 818 21.87      
23 A 846 806 2.09      
24 A 761 725 70.95      
25 A 623 593 186.22      
26 A 564 538 5.91      
27 A 547 521 3.35      
28 A 444 423 49.58      
29 A 381 363 3.93      
30 A 271 258 0.91      
31 A 222 211 1.58      
32 A 110 105 0.83      
33 A 98 93 2.78      

Unscaled Zero Point Vibrational Energy (zpe) 23955.4 cm-1
Scaled (by 0.9528) Zero Point Vibrational Energy (zpe) 22824.7 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
0.28574 0.07030 0.05794

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

Point Group is C1

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 2.539 -0.241 0.068
H2 2.699 -0.855 -0.822
H3 3.349 0.492 0.145
H4 2.559 -0.886 0.950
C5 1.200 0.481 -0.021
H6 1.009 1.082 0.875
H7 1.172 1.127 -0.911
O8 0.186 -0.551 -0.138
N9 -1.421 1.145 0.123
H10 -0.835 1.799 -0.384
H11 -2.414 1.319 0.009
C12 -1.139 -0.220 -0.015
O13 -1.992 -1.096 0.037

Atom - Atom Distances (Å)
  C1 H2 H3 H4 C5 H6 H7 O8 N9 H10 H11 C12 O13
C11.09291.09521.09281.52452.17762.16822.38234.19593.96915.19373.67924.6108
H21.09291.78081.77792.16193.07982.50382.62194.67604.44155.61793.97304.7745
H31.09521.78081.78102.15592.52142.50193.34264.81454.41565.82414.54725.5728
H41.09281.77791.78102.15902.50613.07272.63194.54394.52875.52103.87944.6462
C51.52452.16192.15592.15901.09541.09971.45142.70712.45133.70992.44183.5602
H62.17763.07982.52142.50611.09541.79362.09002.54402.34483.53902.66463.8009
H72.16822.50382.50193.07271.09971.79362.09412.79142.18133.70712.82123.9807
O82.38232.62193.34262.63191.45142.09002.09412.35082.57413.20621.37142.2516
N94.19594.67604.81454.54392.70712.54402.79142.35081.01381.01511.40072.3137
H103.96914.44154.41564.52872.45132.34482.18132.57411.01381.69652.07513.1453
H115.19375.61795.82415.52103.70993.53903.70713.20621.01511.69651.99882.4512
C123.67923.97304.54723.87942.44182.66462.82121.37141.40072.07511.99881.2230
O134.61084.77455.57284.64623.56023.80093.98072.25162.31373.14532.45121.2230

picture of Urethane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C5 H6 111.389 C1 C5 H7 110.381
C1 C5 O8 106.336 H2 C1 H3 108.951
H2 C1 H4 108.861 H2 C1 C5 110.284
H3 C1 H4 108.973 H3 C1 C5 109.679
H4 C1 C5 110.063 C5 O8 C12 119.742
H6 C5 H7 109.591 H6 C5 O8 109.508
H7 C5 O8 109.575 O8 C12 N9 115.993
O8 C12 O13 120.315 N9 C12 O13 123.589
H10 N9 H11 113.467 H10 N9 C12 117.609
H11 N9 C12 110.650
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability