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All results from a given calculation for NH2COOC2H5 (Urethane)

using model chemistry: MP2/3-21G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C1 1A
Energy calculated at MP2/3-21G*
 hartrees
Energy at 0K-320.693849
Energy at 298.15K-320.702859
HF Energy-320.074099
Nuclear repulsion energy242.070763
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 MP2/3-21G*
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 3714 3533 34.05      
2 A 3583 3409 34.39      
3 A 3196 3041 17.40      
4 A 3180 3025 16.27      
5 A 3125 2973 23.87      
6 A 3104 2953 10.43      
7 A 3059 2910 37.60      
8 A 1790 1703 336.48      
9 A 1719 1636 81.44      
10 A 1623 1544 4.91      
11 A 1604 1525 7.29      
12 A 1589 1512 4.95      
13 A 1497 1424 7.83      
14 A 1455 1384 17.09      
15 A 1357 1291 5.01      
16 A 1305 1242 357.41      
17 A 1214 1155 5.26      
18 A 1170 1113 7.46      
19 A 1094 1041 78.98      
20 A 1067 1015 96.02      
21 A 975 927 23.30      
22 A 883 840 0.77      
23 A 822 782 29.24      
24 A 763 726 53.50      
25 A 564 537 8.98      
26 A 554 527 128.16      
27 A 542 515 2.99      
28 A 387 369 103.64      
29 A 357 339 88.32      
30 A 267 254 0.92      
31 A 213 202 1.15      
32 A 89 85 0.34      
33 A 64 61 4.70      

Unscaled Zero Point Vibrational Energy (zpe) 23962.7 cm-1
Scaled (by 0.9513) Zero Point Vibrational Energy (zpe) 22795.7 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 MP2/3-21G*
ABC
0.27665 0.06911 0.05708

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2/3-21G*

Point Group is C1

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -2.574 -0.270 0.078
H2 -2.523 -1.048 0.844
H3 -3.410 0.402 0.296
H4 -2.734 -0.745 -0.893
C5 -1.254 0.507 0.055
H6 -1.282 1.288 -0.716
H7 -1.043 0.973 1.022
O8 -0.216 -0.502 -0.264
N9 1.414 1.173 0.032
H10 0.789 1.871 -0.343
H11 2.384 1.428 0.169
C12 1.139 -0.186 -0.030
O13 1.972 -1.084 0.111

Atom - Atom Distances (Å)
  C1 H2 H3 H4 C5 H6 H7 O8 N9 H10 H11 C12 O13
C11.09231.09481.09241.53242.17492.18732.39414.24214.00895.24173.71564.6188
H21.09231.78561.77552.15633.07092.51142.61654.59284.57085.53723.86204.5546
H31.09481.78561.78482.17252.51802.54163.36664.89324.49425.88574.59865.5870
H41.09241.77551.78482.15792.50483.07942.60724.66324.42225.66084.00754.8245
C51.53242.15632.17252.15791.09821.09501.48182.75032.48813.75422.49233.5974
H62.17493.07092.51802.50481.09821.78332.13232.80072.18333.77382.91644.1114
H72.18732.51142.54163.07941.09501.78332.12462.65692.45433.56042.68513.7620
O82.39412.61653.36662.60721.48182.13232.12462.35602.57793.26661.41082.2951
N94.24214.59284.89324.66322.75032.80072.65692.35601.00931.01171.38782.3263
H104.00894.57084.49424.42222.48812.18332.45432.57791.00931.73262.10953.2152
H115.24175.53725.88575.66083.75423.77383.56043.26661.01171.73262.04792.5462
C123.71563.86204.59864.00752.49232.91642.68511.41081.38782.10952.04791.2333
O134.61884.55465.58704.82453.59744.11143.76202.29512.32633.21522.54621.2333

picture of Urethane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C5 H6 110.455 C1 C5 H7 111.639
C1 C5 O8 105.160 H2 C1 H3 109.461
H2 C1 H4 108.726 H2 C1 C5 109.336
H3 C1 H4 109.373 H3 C1 C5 110.466
H4 C1 C5 109.452 C5 O8 C12 118.975
H6 C5 H7 108.801 H6 C5 O8 110.590
H7 C5 O8 110.174 O8 C12 N9 114.672
O8 C12 O13 120.309 N9 C12 O13 125.017
H10 N9 H11 118.032 H10 N9 C12 122.507
H11 N9 C12 116.303
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability