return to home page Computational Chemistry Comparison and Benchmark DataBase Release 22 (May 2022) Standard Reference Database 101 National Institute of Standards and Technology
You are here: Calculated > Energy > Optimized > Energy

All results from a given calculation for NH2COOC2H5 (Urethane)

using model chemistry: mPW1PW91/6-311G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C1 1A
Energy calculated at mPW1PW91/6-311G*
 hartrees
Energy at 0K-323.742778
Energy at 298.15K-323.751930
Nuclear repulsion energy247.411283
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 mPW1PW91/6-311G*
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 3766 3595 34.25      
2 A 3650 3483 22.06      
3 A 3160 3016 26.87      
4 A 3151 3007 24.86      
5 A 3082 2941 27.71      
6 A 3074 2934 16.97      
7 A 3021 2884 47.43      
8 A 1882 1796 554.83      
9 A 1678 1602 145.84      
10 A 1546 1475 1.34      
11 A 1521 1452 4.53      
12 A 1503 1435 8.60      
13 A 1451 1384 9.41      
14 A 1419 1354 44.91      
15 A 1364 1301 374.19      
16 A 1331 1270 1.55      
17 A 1194 1140 5.50      
18 A 1177 1123 39.09      
19 A 1132 1080 96.07      
20 A 1111 1061 41.51      
21 A 1008 962 15.24      
22 A 877 837 14.07      
23 A 847 809 0.59      
24 A 789 753 33.04      
25 A 584 557 17.04      
26 A 560 535 3.54      
27 A 538 513 68.67      
28 A 387 369 8.67      
29 A 353 337 171.51      
30 A 267 255 0.40      
31 A 219 209 3.01      
32 A 114 109 0.55      
33 A 90 86 1.84      

Unscaled Zero Point Vibrational Energy (zpe) 23921.8 cm-1
Scaled (by 0.9544) Zero Point Vibrational Energy (zpe) 22830.9 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 mPW1PW91/6-311G*
ABC
0.29614 0.07155 0.05904

See section I.F.4 to change rotational constant units
Geometric Data calculated at mPW1PW91/6-311G*

Point Group is C1

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 2.544 -0.245 0.047
H2 2.687 -0.861 -0.841
H3 3.363 0.475 0.106
H4 2.588 -0.893 0.923
C5 1.219 0.473 -0.011
H6 1.067 1.087 0.882
H7 1.181 1.125 -0.894
O8 0.199 -0.517 -0.097
N9 -1.388 1.154 0.069
H10 -0.750 1.847 -0.275
H11 -2.364 1.376 -0.008
C12 -1.109 -0.187 -0.010
O13 -1.947 -1.043 0.030

Atom - Atom Distances (Å)
  C1 H2 H3 H4 C5 H6 H7 O8 N9 H10 H11 C12 O13
C11.09051.09191.09041.50832.15692.14912.36464.17333.91545.16903.65384.5615
H21.09051.77141.76722.15003.06382.49252.61924.63584.41185.58643.94374.7186
H31.09191.77141.77162.14792.50022.48663.32164.79964.35285.79894.52225.5235
H41.09041.76721.77162.14802.49733.05812.62434.55274.48195.52633.87784.6246
C51.50832.15002.14792.14801.09471.09791.42282.69522.41533.69472.41893.5101
H62.15693.06382.50022.49731.09471.77982.06902.58662.28423.55622.67413.7877
H72.14912.49252.48663.05811.09791.77982.07222.74402.15253.66292.78323.9169
O82.36462.61923.32162.62431.42282.06902.07222.31022.55363.18751.35212.2138
N94.17334.63584.79964.55272.69522.58662.74402.31021.00351.00411.37132.2676
H103.91544.41184.35284.48192.41532.28422.15252.55361.00351.70282.08233.1438
H115.16905.58645.79895.52633.69473.55623.66293.18751.00411.70282.00412.4553
C123.65383.94374.52223.87782.41892.67412.78321.35211.37132.08232.00411.1993
O134.56154.71865.52354.62463.51013.78773.91692.21382.26763.14382.45531.1993

picture of Urethane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C5 H6 110.914 C1 C5 H7 110.097
C1 C5 O8 107.521 H2 C1 H3 108.522
H2 C1 H4 108.253 H2 C1 C5 110.614
H3 C1 H4 108.552 H3 C1 C5 110.368
H4 C1 C5 110.463 C5 O8 C12 121.302
H6 C5 H7 108.527 H6 C5 O8 109.859
H7 C5 O8 109.919 O8 C12 N9 116.049
O8 C12 O13 120.260 N9 C12 O13 123.659
H10 N9 H11 116.025 H10 N9 C12 121.750
H11 N9 C12 114.171
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at mPW1PW91/6-311G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.660      
2 H 0.240      
3 H 0.223      
4 H 0.242      
5 C -0.291      
6 H 0.228      
7 H 0.206      
8 O -0.302      
9 N -0.815      
10 H 0.363      
11 H 0.371      
12 C 0.572      
13 O -0.377      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  2.338 4.441 -0.596 5.055
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -35.520 -5.944 0.945
y -5.944 -35.729 -1.398
z 0.945 -1.398 -36.105
Traceless
 xyz
x 0.397 -5.944 0.945
y -5.944 0.084 -1.398
z 0.945 -1.398 -0.481
Polar
3z2-r2-0.962
x2-y20.208
xy-5.944
xz0.945
yz-1.398


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 0.000 0.000 0.000
y 0.000 0.000 0.000
z 0.000 0.000 0.000


<r2> (average value of r2) Å2
<r2> 190.452
(<r2>)1/2 13.800