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: BLYP/3-21G

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C1 1A
Energy calculated at BLYP/3-21G
 hartrees
Energy at 0K-321.855082
Energy at 298.15K-321.863791
Nuclear repulsion energy240.643771
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 BLYP/3-21G
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
(Å4/u)
Dep P Dep U
1 A 3567 3547 23.13      
2 A 3447 3428 13.04      
3 A 3071 3054 22.48      
4 A 3057 3040 20.56      
5 A 2993 2976 14.84      
6 A 2963 2946 44.20      
7 A 2924 2908 34.17      
8 A 1739 1729 311.97      
9 A 1632 1623 83.77      
10 A 1543 1535 1.82      
11 A 1531 1522 11.61      
12 A 1516 1508 6.01      
13 A 1424 1417 6.35      
14 A 1366 1359 12.48      
15 A 1286 1279 1.95      
16 A 1246 1239 298.75      
17 A 1133 1127 2.49      
18 A 1115 1109 6.05      
19 A 1042 1036 31.36      
20 A 984 979 93.92      
21 A 919 914 64.16      
22 A 852 847 1.73      
23 A 781 776 22.70      
24 A 729 725 45.81      
25 A 536 533 4.32      
26 A 529 526 92.44      
27 A 516 513 4.32      
28 A 360 358 45.50      
29 A 353 351 130.58      
30 A 239 238 0.21      
31 A 199 198 3.31      
32 A 98 97 0.49      
33 A 23 23 1.26      

Unscaled Zero Point Vibrational Energy (zpe) 22855.3 cm-1
Scaled (by 0.9945) Zero Point Vibrational Energy (zpe) 22729.6 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 BLYP/3-21G
ABC
0.28129 0.06765 0.05573

See section I.F.4 to change rotational constant units
Geometric Data calculated at BLYP/3-21G

Point Group is C1

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -2.606 -0.264 0.019
H2 -2.643 -0.927 0.896
H3 -3.451 0.442 0.059
H4 -2.688 -0.879 -0.890
C5 -1.270 0.498 0.006
H6 -1.209 1.161 -0.878
H7 -1.156 1.107 0.922
O8 -0.213 -0.551 -0.054
N9 1.412 1.184 0.007
H10 0.695 1.903 -0.067
H11 2.390 1.471 0.037
C12 1.158 -0.179 -0.006
O13 2.024 -1.061 0.023

Atom - Atom Distances (Å)
  C1 H2 H3 H4 C5 H6 H7 O8 N9 H10 H11 C12 O13
C11.10011.10221.10021.53852.18782.19092.41054.27043.94935.28833.76484.6978
H21.10011.79671.78732.17033.09262.52052.63574.65714.48085.64083.97764.7501
H31.10221.79671.79642.18272.53372.54093.38834.91904.39735.93064.65115.6776
H41.10021.78731.79642.17062.51943.09462.63244.67604.45635.67134.00794.8030
C51.53852.17032.18272.17061.10691.10571.49022.76742.41593.78652.52043.6440
H62.18783.09262.53372.51941.10691.80192.14542.76632.19873.72652.85694.0252
H72.19092.52052.54093.09461.10571.80192.14272.72662.24373.67222.80523.9522
O82.41052.63573.38832.63241.49022.14542.14272.37802.61683.29751.42182.2960
N94.27044.65714.91904.67602.76742.76632.72662.37801.01791.01991.38672.3268
H103.94934.48084.39734.45632.41592.19872.24372.61681.01791.75232.13403.2493
H115.28835.64085.93065.67133.78653.72653.67223.29751.01991.75232.05962.5579
C123.76483.97764.65114.00792.52042.85692.80521.42181.38672.13402.05961.2360
O134.69784.75015.67764.80303.64404.02523.95222.29602.32683.24932.55791.2360

picture of Urethane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C5 H6 110.523 C1 C5 H7 110.841
C1 C5 O8 105.469 H2 C1 H3 109.338
H2 C1 H4 108.640 H2 C1 C5 109.556
H3 C1 H4 109.304 H3 C1 C5 110.399
H4 C1 C5 109.576 C5 O8 C12 119.871
H6 C5 H7 109.058 H6 C5 O8 110.535
H7 C5 O8 110.386 O8 C12 N9 115.710
O8 C12 O13 119.348 N9 C12 O13 124.942
H10 N9 H11 118.611 H10 N9 C12 124.401
H11 N9 C12 116.889
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at BLYP/3-21G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.528      
2 H 0.204      
3 H 0.177      
4 H 0.203      
5 C -0.161      
6 H 0.174      
7 H 0.179      
8 O -0.448      
9 N -0.716      
10 H 0.301      
11 H 0.308      
12 C 0.773      
13 O -0.468      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -2.038 4.543 -0.027 4.979
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -34.997 5.905 -0.116
y 5.905 -34.769 -0.180
z -0.116 -0.180 -36.054
Traceless
 xyz
x 0.415 5.905 -0.116
y 5.905 0.756 -0.180
z -0.116 -0.180 -1.171
Polar
3z2-r2-2.342
x2-y2-0.228
xy5.905
xz-0.116
yz-0.180


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> 199.472
(<r2>)1/2 14.123