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: B3LYP/CEP-121G

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C1 1A
Energy calculated at B3LYP/CEP-121G
 hartrees
Energy at 0K-62.947035
Energy at 298.15K-62.955989
Nuclear repulsion energy134.895428
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 B3LYP/CEP-121G
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 3741 3645 27.66      
2 A 3590 3498 23.93      
3 A 3116 3037 38.91      
4 A 3096 3017 35.28      
5 A 3034 2957 40.39      
6 A 3008 2931 24.81      
7 A 2971 2895 44.69      
8 A 1701 1657 489.24      
9 A 1645 1603 136.08      
10 A 1533 1494 2.46      
11 A 1517 1478 10.04      
12 A 1502 1463 8.08      
13 A 1441 1405 8.66      
14 A 1402 1367 21.42      
15 A 1301 1268 401.50      
16 A 1293 1260 0.00      
17 A 1165 1135 5.77      
18 A 1139 1110 3.86      
19 A 1074 1046 13.20      
20 A 1054 1027 135.06      
21 A 965 941 47.63      
22 A 840 819 0.63      
23 A 802 782 19.48      
24 A 712 693 52.46      
25 A 555 541 162.68      
26 A 539 525 4.94      
27 A 520 507 8.99      
28 A 415 404 126.69      
29 A 360 351 0.91      
30 A 241 235 0.25      
31 A 199 194 3.76      
32 A 91 88 0.13      
33 A 74 72 0.00      

Unscaled Zero Point Vibrational Energy (zpe) 23315.9 cm-1
Scaled (by 0.9745) Zero Point Vibrational Energy (zpe) 22721.4 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 B3LYP/CEP-121G
ABC
0.28294 0.06706 0.05536

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3LYP/CEP-121G

Point Group is C1

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 2.591 -0.251 0.000
H2 2.675 -0.886 -0.888
H3 3.421 0.469 -0.000
H4 2.675 -0.885 0.889
C5 1.251 0.494 -0.000
H6 1.148 1.120 0.900
H7 1.148 1.120 -0.900
O8 0.191 -0.543 -0.000
N9 -1.488 1.139 0.000
H10 -0.805 1.881 0.000
H11 -2.469 1.374 -0.000
C12 -1.172 -0.216 0.000
O13 -2.031 -1.122 0.000

Atom - Atom Distances (Å)
  C1 H2 H3 H4 C5 H6 H7 O8 N9 H10 H11 C12 O13
C11.09521.09821.09521.53332.18472.18472.41784.30914.00995.31513.76364.7034
H21.09521.78311.77692.17293.09102.52102.66024.71354.53395.68884.00504.7948
H31.09821.78311.78312.17012.53042.53043.38474.95434.45615.95974.64415.6792
H41.09521.77691.78312.17292.52093.09102.66024.71344.53365.68884.00504.7949
C51.53332.17292.17012.17291.10111.10101.48342.81362.48003.82322.52553.6585
H62.18473.09102.53042.52091.10111.80032.11952.78502.28093.73622.82463.9927
H72.18472.52102.53043.09101.10101.80032.11942.78512.28133.73612.82463.9926
O82.41782.66023.38472.66021.48342.11952.11942.37652.62083.27961.40212.2961
N94.30914.71354.95434.71342.81362.78502.78512.37651.00801.00961.39122.3253
H104.00994.53394.45614.53362.48002.28092.28132.62081.00801.73932.12873.2433
H115.31515.68885.95975.68883.82323.73623.73613.27961.00961.73932.05252.5350
C123.76364.00504.64414.00502.52552.82462.82461.40211.39122.12872.05251.2482
O134.70344.79485.67924.79493.65853.99273.99262.29612.32533.24332.53501.2482

picture of Urethane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C5 H6 110.986 C1 C5 H7 110.990
C1 C5 O8 106.529 H2 C1 H3 108.767
H2 C1 H4 108.440 H2 C1 C5 110.407
H3 C1 H4 108.767 H3 C1 C5 110.005
H4 C1 C5 110.406 C5 O8 C12 122.118
H6 C5 H7 109.678 H6 C5 O8 109.293
H7 C5 O8 109.292 O8 C12 N9 116.596
O8 C12 O13 119.963 N9 C12 O13 123.442
H10 N9 H11 119.107 H10 N9 C12 124.288
H11 N9 C12 116.605
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3LYP/CEP-121G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.465      
2 H 0.174      
3 H 0.145      
4 H 0.174      
5 C -0.161      
6 H 0.146      
7 H 0.146      
8 O -0.181      
9 N -0.534      
10 H 0.327      
11 H 0.337      
12 C 0.050      
13 O -0.160      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  2.710 5.471 0.000 6.105
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -36.235 -7.237 0.001
y -7.237 -36.962 0.001
z 0.001 0.001 -36.996
Traceless
 xyz
x 0.744 -7.237 0.001
y -7.237 -0.346 0.001
z 0.001 0.001 -0.398
Polar
3z2-r2-0.796
x2-y20.727
xy-7.237
xz0.001
yz0.001


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 9.299 0.551 -0.000
y 0.551 7.484 -0.001
z -0.000 -0.001 5.231


<r2> (average value of r2) Å2
<r2> 163.134
(<r2>)1/2 12.772