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All results from a given calculation for NH2COOC2H5 (Urethane)

using model chemistry: MP2/LANL2DZ

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/LANL2DZ
 hartrees
Energy at 0K-322.377443
Energy at 298.15K-322.386268
HF Energy-321.767739
Nuclear repulsion energy239.224039
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/LANL2DZ
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 3781 3642 46.22      
2 A 3629 3495 50.15      
3 A 3165 3048 32.99      
4 A 3141 3025 30.05      
5 A 3094 2980 36.15      
6 A 3039 2927 25.32      
7 A 3025 2913 42.66      
8 A 1719 1656 383.04      
9 A 1673 1611 203.13      
10 A 1553 1496 2.87      
11 A 1541 1484 8.07      
12 A 1522 1466 7.53      
13 A 1466 1412 10.84      
14 A 1426 1373 17.99      
15 A 1313 1264 0.36      
16 A 1299 1251 395.65      
17 A 1179 1135 5.13      
18 A 1150 1108 5.45      
19 A 1081 1041 49.70      
20 A 1052 1013 105.72      
21 A 959 923 77.72      
22 A 870 838 0.58      
23 A 788 759 32.95      
24 A 704 678 41.54      
25 A 542 522 4.08      
26 A 536 516 167.20      
27 A 519 499 5.09      
28 A 365 352 0.68      
29 A 359 345 206.64      
30 A 246 236 0.00      
31 A 207 200 3.45      
32 A 96 92 0.00      
33 A 55 53 0.58      

Unscaled Zero Point Vibrational Energy (zpe) 23545.8 cm-1
Scaled (by 0.9631) Zero Point Vibrational Energy (zpe) 22677.0 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/LANL2DZ
ABC
0.27892 0.06654 0.05487

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2/LANL2DZ

Point Group is C1

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -2.623 -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 1.132 -0.907
H7 -1.190 1.132 0.907
O8 -0.217 -0.538 -0.000
N9 1.438 1.188 0.000
H10 0.734 1.915 0.000
H11 2.416 1.455 0.000
C12 1.157 -0.183 0.000
O13 2.036 -1.075 0.000

Atom - Atom Distances (Å)
  C1 H2 H3 H4 C5 H6 H7 O8 N9 H10 H11 C12 O13
C11.10161.10541.10161.54062.19912.19912.42074.31404.00455.32573.78054.7281
H21.10161.79631.79152.18093.10742.53082.65654.71534.52655.69724.01604.8139
H31.10541.79631.79632.17912.54822.54823.39674.96374.45425.97244.66835.7108
H41.10161.79151.79632.18092.53093.10742.65644.71544.52675.69744.01604.8138
C51.54062.18092.17912.18091.10661.10661.49822.81312.46703.82712.54353.6842
H62.19913.10742.54822.53091.10661.81452.13502.78112.26733.73332.83944.0131
H72.19912.53082.54823.10741.10661.81452.13512.78092.26703.73312.83944.0131
O82.42072.65653.39672.65641.49822.13502.13512.39132.63063.30241.41902.3164
N94.31404.71534.96374.71542.81312.78112.78092.39131.01131.01421.40002.3412
H104.00454.52654.45424.52672.46702.26732.26702.63061.01131.74402.14013.2610
H115.32575.69725.97245.69743.82713.73333.73313.30241.01421.74402.06622.5583
C123.78054.01604.66834.01602.54352.83942.83941.41901.40002.14012.06621.2525
O134.72814.81395.71084.81383.68424.01314.01312.31642.34123.26102.55831.2525

picture of Urethane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C5 H6 111.299 C1 C5 H7 111.294
C1 C5 O8 105.604 H2 C1 H3 108.960
H2 C1 H4 108.797 H2 C1 C5 110.152
H3 C1 H4 108.960 H3 C1 C5 109.789
H4 C1 C5 110.153 C5 O8 C12 121.337
H6 C5 H7 110.149 H6 C5 O8 109.180
H7 C5 O8 109.183 O8 C12 N9 116.051
O8 C12 O13 120.116 N9 C12 O13 123.832
H10 N9 H11 118.867 H10 N9 C12 124.333
H11 N9 C12 116.801
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability