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All results from a given calculation for NH2COOC2H5 (Urethane)

using model chemistry: MP3/6-31G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C1 1A
Energy calculated at MP3/6-31G*
 hartrees
Energy at 0K-322.792701
Energy at 298.15K-322.802027
HF Energy-321.868670
Nuclear repulsion energy246.489713
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 MP3/6-31G*
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 3748 3518 36.59      
2 A 3640 3416 32.10      
3 A 3212 3015 17.99      
4 A 3199 3003 17.60      
5 A 3149 2955 18.90      
6 A 3117 2926 11.25      
7 A 3076 2887 38.59      
8 A 1933 1815 527.36      
9 A 1697 1592 136.78      
10 A 1589 1491 1.66      
11 A 1559 1464 3.49      
12 A 1544 1449 5.81      
13 A 1492 1400 8.30      
14 A 1459 1369 62.60      
15 A 1409 1322 347.66      
16 A 1348 1265 1.13      
17 A 1223 1148 5.63      
18 A 1202 1128 33.20      
19 A 1165 1094 125.89      
20 A 1146 1076 9.03      
21 A 1029 966 13.62      
22 A 894 839 18.84      
23 A 861 809 0.41      
24 A 797 748 71.24      
25 A 614 576 177.34      
26 A 585 549 21.35      
27 A 568 533 2.83      
28 A 443 416 80.82      
29 A 393 369 5.00      
30 A 274 257 1.04      
31 A 228 214 1.54      
32 A 104 98 1.05      
33 A 98 92 3.37      

Unscaled Zero Point Vibrational Energy (zpe) 24397.1 cm-1
Scaled (by 0.9386) Zero Point Vibrational Energy (zpe) 22899.1 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 MP3/6-31G*
ABC
0.29130 0.07136 0.05889

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

Point Group is C1

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 2.546 -0.249 0.062
H2 2.700 -0.824 -0.855
H3 3.367 0.465 0.173
H4 2.558 -0.938 0.910
C5 1.222 0.484 0.005
H6 1.041 1.054 0.922
H7 1.207 1.178 -0.847
O8 0.203 -0.513 -0.156
N9 -1.389 1.162 0.087
H10 -0.810 1.818 -0.417
H11 -2.380 1.344 0.012
C12 -1.105 -0.188 -0.017
O13 -1.945 -1.051 0.054

Atom - Atom Distances (Å)
  C1 H2 H3 H4 C5 H6 H7 O8 N9 H10 H11 C12 O13
C11.09251.09421.09231.51522.16952.15762.36784.18053.97005.17813.65284.5617
H21.09251.77831.77382.15333.07222.49692.61164.64234.41425.59133.94804.7382
H31.09421.77831.77892.15252.51452.49333.32844.80804.43005.81704.52425.5255
H41.09231.77381.77892.15122.50453.06402.61984.54614.54905.51413.85284.5849
C51.51522.15332.15252.15121.09471.09881.43472.69832.46593.70322.42233.5193
H62.16953.07222.51452.50451.09471.78152.07852.57132.40793.55192.65173.7549
H72.15762.49692.49333.06401.09881.78152.08442.75912.15903.69272.81093.9641
O82.36782.61163.32842.61981.43472.07852.08442.32362.55433.18621.35522.2240
N94.18054.64234.80804.54612.69832.57132.75912.32361.00961.01091.38352.2823
H103.97004.41424.43004.54902.46592.40792.15902.55431.00961.69572.06613.1209
H115.17815.59135.81705.51413.70323.55193.69273.18621.01091.69571.99362.4353
C123.65283.94804.52423.85282.42232.65172.81091.35521.38352.06611.99361.2062
O134.56174.73825.52554.58493.51933.75493.96412.22402.28233.12092.43531.2062

picture of Urethane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C5 H6 111.433 C1 C5 H7 110.243
C1 C5 O8 106.743 H2 C1 H3 108.833
H2 C1 H4 108.558 H2 C1 C5 110.277
H3 C1 H4 108.895 H3 C1 C5 110.115
H4 C1 C5 110.121 C5 O8 C12 120.481
H6 C5 H7 108.610 H6 C5 O8 109.788
H7 C5 O8 110.014 O8 C12 N9 116.081
O8 C12 O13 120.405 N9 C12 O13 123.463
H10 N9 H11 114.117 H10 N9 C12 118.562
H11 N9 C12 111.798
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability