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All results from a given calculation for NH2COOC2H5 (Urethane)

using model chemistry: B3PW91/6-31G**

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C1 1A
Energy calculated at B3PW91/6-31G**
 hartrees
Energy at 0K-323.636630
Energy at 298.15K-323.645739
Nuclear repulsion energy246.415319
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**
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 3754 3598 45.29      
2 A 3628 3477 25.29      
3 A 3164 3033 17.88      
4 A 3155 3023 17.71      
5 A 3072 2945 27.49      
6 A 3070 2942 13.27      
7 A 3006 2881 44.13      
8 A 1879 1801 483.76      
9 A 1631 1563 147.91      
10 A 1531 1467 1.62      
11 A 1509 1446 4.25      
12 A 1492 1430 6.05      
13 A 1438 1378 8.83      
14 A 1408 1350 55.91      
15 A 1354 1297 342.70      
16 A 1308 1254 0.91      
17 A 1181 1131 5.28      
18 A 1163 1115 44.33      
19 A 1119 1073 79.53      
20 A 1097 1052 32.43      
21 A 999 957 12.11      
22 A 869 833 12.46      
23 A 838 803 1.07      
24 A 771 739 36.98      
25 A 576 552 22.99      
26 A 556 533 9.00      
27 A 537 514 74.69      
28 A 386 370 53.14      
29 A 371 356 99.06      
30 A 262 251 0.46      
31 A 216 207 2.46      
32 A 112 107 1.14      
33 A 87 84 1.48      

Unscaled Zero Point Vibrational Energy (zpe) 23768.7 cm-1
Scaled (by 0.9584) Zero Point Vibrational Energy (zpe) 22780.0 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 B3PW91/6-31G**
ABC
0.29362 0.07098 0.05859

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3PW91/6-31G**

Point Group is C1

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 2.554 -0.247 0.050
H2 2.700 -0.855 -0.846
H3 3.372 0.477 0.118
H4 2.595 -0.903 0.922
C5 1.224 0.474 -0.008
H6 1.067 1.083 0.892
H7 1.192 1.138 -0.885
O8 0.201 -0.518 -0.108
N9 -1.393 1.160 0.073
H10 -0.763 1.848 -0.305
H11 -2.375 1.368 -0.007
C12 -1.111 -0.184 -0.011
O13 -1.955 -1.049 0.035

Atom - Atom Distances (Å)
  C1 H2 H3 H4 C5 H6 H7 O8 N9 H10 H11 C12 O13
C11.09301.09411.09291.51392.16482.15562.37374.18963.93845.18713.66624.5797
H21.09301.77601.77252.15633.07302.50002.62794.65374.42605.60433.95924.7418
H31.09411.77601.77642.15192.50582.48903.33094.81364.37655.81724.53365.5417
H41.09291.77251.77642.15452.50563.06642.63444.56904.51075.54293.88894.6379
C51.51392.15632.15192.15451.09761.10101.42822.70602.43333.70832.42613.5249
H62.16483.07302.50582.50561.09761.78262.07622.59352.31653.56912.67703.7961
H72.15562.50002.48903.06641.10101.78262.08102.75722.15903.68112.79643.9414
O82.37372.62793.33092.63441.42822.07622.08102.32072.56183.19431.35732.2249
N94.18964.65374.81364.56902.70602.59352.75722.32071.00701.00761.37562.2790
H103.93844.42604.37654.51072.43332.31652.15902.56181.00701.70842.08263.1506
H115.18715.60435.81725.54293.70833.56913.68113.19431.00761.70842.00212.4536
C123.66623.95924.53363.88892.42612.67702.79641.35731.37562.08262.00211.2087
O134.57974.74185.54174.63793.52493.79613.94142.22492.27903.15062.45361.2087

picture of Urethane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C5 H6 110.985 C1 C5 H7 110.039
C1 C5 O8 107.537 H2 C1 H3 108.591
H2 C1 H4 108.366 H2 C1 C5 110.580
H3 C1 H4 108.637 H3 C1 C5 110.163
H4 C1 C5 110.444 C5 O8 C12 121.118
H6 C5 H7 108.345 H6 C5 O8 109.885
H7 C5 O8 110.051 O8 C12 N9 116.240
O8 C12 O13 120.123 N9 C12 O13 123.602
H10 N9 H11 116.000 H10 N9 C12 121.094
H11 N9 C12 113.395
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3PW91/6-31G** Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.407      
2 H 0.156      
3 H 0.134      
4 H 0.158      
5 C -0.019      
6 H 0.142      
7 H 0.119      
8 O -0.461      
9 N -0.667      
10 H 0.286      
11 H 0.306      
12 C 0.746      
13 O -0.494      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  2.353 4.310 -0.624 4.950
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -34.872 -5.924 1.034
y -5.924 -35.299 -1.450
z 1.034 -1.450 -35.671
Traceless
 xyz
x 0.613 -5.924 1.034
y -5.924 -0.027 -1.450
z 1.034 -1.450 -0.586
Polar
3z2-r2-1.172
x2-y20.427
xy-5.924
xz1.034
yz-1.450


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> 191.426
(<r2>)1/2 13.836