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All results from a given calculation for NH2COOC2H5 (Urethane)

using model chemistry: MP2/6-31G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C1 1A
Energy calculated at MP2/6-31G*
 hartrees
Energy at 0K-322.768968
Energy at 298.15K-322.778257
HF Energy-321.866939
Nuclear repulsion energy245.818577
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 MP2/6-31G*
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 3732 3520 40.50      
2 A 3613 3407 33.78      
3 A 3229 3045 14.31      
4 A 3214 3030 14.27      
5 A 3157 2977 19.71      
6 A 3122 2944 10.44      
7 A 3078 2903 37.30      
8 A 1876 1769 432.37      
9 A 1680 1584 126.91      
10 A 1587 1497 2.21      
11 A 1563 1474 4.26      
12 A 1548 1460 5.98      
13 A 1483 1398 8.15      
14 A 1449 1366 29.58      
15 A 1376 1297 362.39      
16 A 1342 1266 4.12      
17 A 1217 1148 4.99      
18 A 1186 1119 14.04      
19 A 1138 1073 146.31      
20 A 1130 1065 15.76      
21 A 1018 960 19.95      
22 A 876 827 19.09      
23 A 863 813 1.46      
24 A 773 729 62.97      
25 A 608 573 181.31      
26 A 572 539 11.34      
27 A 556 524 2.23      
28 A 447 421 77.80      
29 A 388 366 4.78      
30 A 279 263 0.99      
31 A 225 213 1.49      
32 A 108 102 1.18      
33 A 98 92 2.89      

Unscaled Zero Point Vibrational Energy (zpe) 24264.9 cm-1
Scaled (by 0.943) Zero Point Vibrational Energy (zpe) 22881.8 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 MP2/6-31G*
ABC
0.28935 0.07110 0.05863

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

Point Group is C1

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 2.541 -0.255 0.057
H2 2.686 -0.852 -0.845
H3 3.362 0.462 0.142
H4 2.562 -0.920 0.923
C5 1.222 0.478 -0.005
H6 1.053 1.071 0.900
H7 1.198 1.148 -0.876
O8 0.204 -0.527 -0.127
N9 -1.366 1.171 0.083
H10 -0.744 1.833 -0.358
H11 -2.350 1.387 -0.004
C12 -1.111 -0.184 -0.020
O13 -1.969 -1.043 0.045

Atom - Atom Distances (Å)
  C1 H2 H3 H4 C5 H6 H7 O8 N9 H10 H11 C12 O13
C11.09151.09351.09141.51082.16452.15452.36014.15953.91535.16043.65384.5788
H21.09151.77751.77332.14883.06772.49232.60364.62284.38345.57523.94244.7431
H31.09351.77751.77792.14562.50582.48763.32034.78144.35815.78884.52265.5406
H41.09141.77331.77792.14702.49833.06062.61034.52784.48865.50523.86214.6165
C51.51082.14882.14562.14701.09541.09881.43532.68042.41393.68602.42493.5350
H62.16453.06772.50582.49831.09541.78352.08082.55492.32213.53542.66523.7856
H72.15452.49232.48763.06061.09881.78352.08642.73812.12443.66222.80003.9596
O82.36012.60363.32032.61031.43532.08082.08642.32212.55423.19441.36342.2403
N94.15954.62284.78144.52782.68042.55492.73812.32211.01011.01161.38252.2941
H103.91534.38344.35814.48862.41392.32212.12442.55421.01011.70412.07833.1516
H115.16045.57525.78885.50523.68603.53543.66223.19441.01161.70412.00122.4595
C123.65383.94244.52263.86212.42492.66522.80001.36341.38252.07832.00121.2155
O134.57884.74315.54064.61653.53503.78563.95962.24032.29413.15162.45951.2155

picture of Urethane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C5 H6 111.307 C1 C5 H7 110.304
C1 C5 O8 106.444 H2 C1 H3 108.877
H2 C1 H4 108.655 H2 C1 C5 110.287
H3 C1 H4 108.925 H3 C1 C5 109.915
H4 C1 C5 110.146 C5 O8 C12 120.074
H6 C5 H7 108.747 H6 C5 O8 109.890
H7 C5 O8 110.136 O8 C12 N9 115.486
O8 C12 O13 120.519 N9 C12 O13 123.899
H10 N9 H11 114.899 H10 N9 C12 119.797
H11 N9 C12 112.493
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability