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All results from a given calculation for NH2COOC2H5 (Urethane)

using model chemistry: MP2=FULL/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 MP2=FULL/6-31G*
 hartrees
Energy at 0K-322.792680
Energy at 298.15K-322.801978
HF Energy-321.867291
Nuclear repulsion energy246.049404
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=FULL/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 3735 3519 41.30      
2 A 3615 3406 34.43      
3 A 3230 3044 14.06      
4 A 3215 3029 14.08      
5 A 3157 2974 20.00      
6 A 3123 2942 10.31      
7 A 3078 2900 37.20      
8 A 1881 1772 435.38      
9 A 1681 1583 128.30      
10 A 1588 1496 2.28      
11 A 1564 1473 4.28      
12 A 1549 1459 6.07      
13 A 1484 1398 8.15      
14 A 1451 1367 30.20      
15 A 1378 1298 364.21      
16 A 1344 1267 4.00      
17 A 1219 1148 5.04      
18 A 1188 1119 15.08      
19 A 1141 1075 142.19      
20 A 1131 1065 15.78      
21 A 1019 961 19.54      
22 A 878 827 18.86      
23 A 864 814 1.36      
24 A 777 732 59.37      
25 A 605 570 176.68      
26 A 573 540 13.77      
27 A 557 525 2.26      
28 A 444 419 83.23      
29 A 389 367 5.43      
30 A 280 264 0.95      
31 A 226 213 1.54      
32 A 110 103 1.09      
33 A 98 93 2.89      

Unscaled Zero Point Vibrational Energy (zpe) 24285.6 cm-1
Scaled (by 0.9422) Zero Point Vibrational Energy (zpe) 22881.9 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=FULL/6-31G*
ABC
0.29010 0.07122 0.05872

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2=FULL/6-31G*

Point Group is C1

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 2.544 -0.253 0.062
H2 2.693 -0.838 -0.847
H3 3.368 0.458 0.163
H4 2.556 -0.930 0.917
C5 1.226 0.482 0.000
H6 1.046 1.062 0.911
H7 1.209 1.164 -0.861
O8 0.206 -0.519 -0.147
N9 -1.378 1.168 0.087
H10 -0.785 1.825 -0.402
H11 -2.369 1.364 0.009
C12 -1.109 -0.185 -0.017
O13 -1.960 -1.049 0.050

Atom - Atom Distances (Å)
  C1 H2 H3 H4 C5 H6 H7 O8 N9 H10 H11 C12 O13
C11.09121.09331.09111.51092.16682.15462.36264.17213.95215.17233.65474.5737
H21.09121.77631.77232.14833.06832.49242.60394.63444.40375.58643.94664.7437
H31.09331.77631.77682.14882.51352.49163.32454.80004.40905.80994.52685.5383
H41.09111.77231.77682.14622.49993.05982.61224.53554.52715.50803.85494.5995
C51.51092.14832.14882.14621.09431.09831.43722.69432.45133.70092.42843.5350
H62.16683.06832.51352.49991.09431.78182.07962.56242.37843.54422.65683.7725
H72.15462.49242.49163.05981.09831.78182.08602.75572.15083.68742.81173.9714
O82.36262.60393.32452.61221.43722.07962.08602.32662.55823.19381.36312.2381
N94.17214.63444.80004.53552.69432.56242.75572.32661.01081.01241.38342.2930
H103.95214.40374.40904.52712.45132.37842.15082.55821.01081.69932.07163.1378
H115.17235.58645.80995.50803.70093.54423.68743.19381.01241.69931.99652.4485
C123.65473.94664.52683.85492.42842.65682.81171.36311.38342.07161.99651.2149
O134.57374.74375.53834.59953.53503.77253.97142.23812.29303.13782.44851.2149

picture of Urethane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C5 H6 111.549 C1 C5 H7 110.336
C1 C5 O8 106.503 H2 C1 H3 108.804
H2 C1 H4 108.611 H2 C1 C5 110.255
H3 C1 H4 108.864 H3 C1 C5 110.171
H4 C1 C5 110.095 C5 O8 C12 120.243
H6 C5 H7 108.710 H6 C5 O8 109.730
H7 C5 O8 109.996 O8 C12 N9 115.792
O8 C12 O13 120.387 N9 C12 O13 123.763
H10 N9 H11 114.256 H10 N9 C12 119.002
H11 N9 C12 111.954
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability