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All results from a given calculation for NH2COOC2H5 (Urethane)

using model chemistry: B3PW91/6-31G(2df,p)

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C1 1A
Energy calculated at B3PW91/6-31G(2df,p)
 hartrees
Energy at 0K-323.654283
Energy at 298.15K-323.663405
Nuclear repulsion energy246.960105
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 B3PW91/6-31G(2df,p)
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 3743 3599 42.54      
2 A 3622 3483 25.08      
3 A 3151 3029 17.27      
4 A 3145 3023 16.12      
5 A 3060 2942 13.35      
6 A 3058 2940 23.34      
7 A 2994 2878 40.19      
8 A 1870 1798 467.73      
9 A 1620 1557 130.87      
10 A 1517 1459 1.33      
11 A 1494 1436 3.38      
12 A 1477 1420 5.45      
13 A 1423 1368 11.00      
14 A 1397 1343 39.29      
15 A 1346 1294 328.02      
16 A 1301 1251 1.26      
17 A 1177 1131 4.64      
18 A 1159 1114 45.00      
19 A 1117 1074 82.39      
20 A 1093 1051 31.36      
21 A 996 957 12.34      
22 A 866 832 11.38      
23 A 831 799 0.88      
24 A 782 752 29.30      
25 A 577 555 23.27      
26 A 555 533 6.46      
27 A 531 511 66.40      
28 A 390 375 92.81      
29 A 376 361 35.70      
30 A 256 246 0.39      
31 A 215 207 2.40      
32 A 116 111 0.80      
33 A 88 85 1.14      

Unscaled Zero Point Vibrational Energy (zpe) 23670.5 cm-1
Scaled (by 0.9614) Zero Point Vibrational Energy (zpe) 22756.9 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 B3PW91/6-31G(2df,p)
ABC
0.29496 0.07130 0.05884

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3PW91/6-31G(2df,p)

Point Group is C1

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 2.550 -0.245 0.049
H2 2.695 -0.867 -0.839
H3 3.366 0.482 0.102
H4 2.597 -0.888 0.931
C5 1.218 0.471 -0.015
H6 1.065 1.093 0.877
H7 1.182 1.123 -0.901
O8 0.199 -0.520 -0.096
N9 -1.387 1.159 0.078
H10 -0.752 1.840 -0.300
H11 -2.366 1.369 -0.027
C12 -1.110 -0.186 -0.009
O13 -1.951 -1.044 0.029

Atom - Atom Distances (Å)
  C1 H2 H3 H4 C5 H6 H7 O8 N9 H10 H11 C12 O13
C11.09311.09391.09301.51432.16412.15562.37224.18063.92085.17523.66124.5722
H21.09311.77631.77262.15653.07252.50052.62704.64824.41525.59193.95304.7295
H31.09391.77631.77662.15172.50412.48753.32794.80154.35475.80184.52685.5326
H41.09301.77261.77662.15492.50493.06662.63484.55964.49125.53563.88804.6395
C51.51432.15652.15172.15491.09771.10111.42352.69582.41533.69452.41833.5128
H62.16413.07252.50412.50491.09771.78222.07302.57972.28993.55852.67363.7924
H72.15562.50052.48753.06661.10111.78222.07712.74992.14813.66242.78603.9217
O82.37222.62703.32792.63481.42352.07302.07712.31582.55193.18611.35332.2166
N94.18064.64824.80154.55962.69582.57972.74992.31581.00551.00661.37542.2743
H103.92084.41524.35474.49122.41532.28992.14812.55191.00551.70342.07733.1406
H115.17525.59195.80185.53563.69453.55853.66243.18611.00661.70341.99902.4494
C123.66123.95304.52683.88802.41832.67362.78601.35331.37542.07731.99901.2027
O134.57224.72955.53264.63953.51283.79243.92172.21662.27433.14062.44941.2027

picture of Urethane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C5 H6 110.890 C1 C5 H7 110.006
C1 C5 O8 107.655 H2 C1 H3 108.625
H2 C1 H4 108.365 H2 C1 C5 110.561
H3 C1 H4 108.663 H3 C1 C5 110.127
H4 C1 C5 110.442 C5 O8 C12 121.102
H6 C5 H7 108.292 H6 C5 O8 109.939
H7 C5 O8 110.061 O8 C12 N9 116.133
O8 C12 O13 120.155 N9 C12 O13 123.674
H10 N9 H11 115.687 H10 N9 C12 120.709
H11 N9 C12 113.209
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3PW91/6-31G(2df,p) Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.451      
2 H 0.162      
3 H 0.145      
4 H 0.164      
5 C -0.107      
6 H 0.144      
7 H 0.125      
8 O -0.252      
9 N -0.623      
10 H 0.279      
11 H 0.291      
12 C 0.519      
13 O -0.396      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  2.324 4.105 -0.599 4.755
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -34.985 -5.746 0.952
y -5.746 -35.140 -1.377
z 0.952 -1.377 -35.409
Traceless
 xyz
x 0.290 -5.746 0.952
y -5.746 0.057 -1.377
z 0.952 -1.377 -0.347
Polar
3z2-r2-0.694
x2-y20.155
xy-5.746
xz0.952
yz-1.377


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 8.792 0.229 -0.089
y 0.229 7.043 -0.067
z -0.089 -0.067 5.139


<r2> (average value of r2) Å2
<r2> 190.624
(<r2>)1/2 13.807