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: B3PW91/cc-pVDZ

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/cc-pVDZ
 hartrees
Energy at 0K-323.648025
Energy at 298.15K-323.657187
Nuclear repulsion energy246.343001
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/cc-pVDZ
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 3702 3572 43.83      
2 A 3580 3455 21.82      
3 A 3155 3045 15.86      
4 A 3149 3039 15.79      
5 A 3066 2958 26.00      
6 A 3059 2952 14.39      
7 A 2995 2890 44.95      
8 A 1872 1807 497.86      
9 A 1598 1542 139.20      
10 A 1495 1443 0.46      
11 A 1473 1422 2.78      
12 A 1452 1401 6.77      
13 A 1418 1368 16.22      
14 A 1384 1336 76.69      
15 A 1344 1297 295.43      
16 A 1292 1247 1.30      
17 A 1164 1123 5.37      
18 A 1155 1114 43.12      
19 A 1119 1080 82.47      
20 A 1093 1055 44.33      
21 A 999 964 15.90      
22 A 867 837 13.13      
23 A 831 802 0.99      
24 A 778 751 34.99      
25 A 579 559 36.42      
26 A 555 536 19.81      
27 A 543 524 71.79      
28 A 408 394 87.77      
29 A 377 364 5.82      
30 A 262 252 0.58      
31 A 215 207 2.36      
32 A 112 108 1.28      
33 A 89 86 1.32      

Unscaled Zero Point Vibrational Energy (zpe) 23590.1 cm-1
Scaled (by 0.965) Zero Point Vibrational Energy (zpe) 22764.4 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 B3PW91/cc-pVDZ
ABC
0.29304 0.07111 0.05868

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3PW91/cc-pVDZ

Point Group is C1

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 2.552 -0.244 0.047
H2 2.701 -0.852 -0.858
H3 3.372 0.486 0.118
H4 2.599 -0.910 0.921
C5 1.220 0.470 -0.003
H6 1.060 1.077 0.905
H7 1.183 1.145 -0.881
O8 0.200 -0.524 -0.108
N9 -1.384 1.165 0.084
H10 -0.760 1.828 -0.360
H11 -2.369 1.371 -0.033
C12 -1.112 -0.184 -0.011
O13 -1.957 -1.045 0.034

Atom - Atom Distances (Å)
  C1 H2 H3 H4 C5 H6 H7 O8 N9 H10 H11 C12 O13
C11.09991.10051.09981.51222.16952.15952.37384.18033.92795.17963.66494.5795
H21.09991.78651.78232.16123.08532.50812.63194.65164.40545.59683.96274.7465
H31.10051.78651.78682.15602.51272.49463.33694.80414.37075.81084.53595.5453
H41.09981.78231.78682.15912.51393.07822.63924.56854.51945.54953.89474.6439
C51.51222.16122.15602.15911.10401.10791.42752.69592.42733.70012.42173.5193
H62.16953.08532.51272.51391.10401.79102.08042.57952.34023.56722.67363.7901
H72.15952.50812.49463.07821.10791.79102.08512.74202.12443.65872.79133.9356
O82.37382.63193.33692.63921.42752.08042.08512.32262.55253.19241.35842.2233
N94.18034.65164.80414.56852.69592.57952.74202.32261.01301.01341.37962.2833
H103.92794.40544.37074.51942.42732.34022.12442.55251.01301.70462.07293.1371
H115.17965.59685.81085.54953.70013.56723.65873.19241.01341.70461.99962.4510
C123.66493.96274.53593.89472.42172.67362.79131.35841.37962.07291.99961.2066
O134.57954.74655.54534.64393.51933.79013.93562.22332.28333.13712.45101.2066

picture of Urethane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C5 H6 111.083 C1 C5 H7 110.061
C1 C5 O8 107.670 H2 C1 H3 108.561
H2 C1 H4 108.236 H2 C1 C5 110.664
H3 C1 H4 108.593 H3 C1 C5 110.216
H4 C1 C5 110.503 C5 O8 C12 120.734
H6 C5 H7 108.140 H6 C5 O8 109.876
H7 C5 O8 110.014 O8 C12 N9 116.050
O8 C12 O13 120.060 N9 C12 O13 123.842
H10 N9 H11 114.530 H10 N9 C12 119.285
H11 N9 C12 112.459
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3PW91/cc-pVDZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.073      
2 H 0.062      
3 H 0.045      
4 H 0.064      
5 C 0.017      
6 H 0.052      
7 H 0.041      
8 O -0.266      
9 N -0.163      
10 H 0.109      
11 H 0.122      
12 C 0.261      
13 O -0.272      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  2.228 4.156 -0.677 4.764
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -35.131 -5.719 1.105
y -5.719 -35.528 -1.570
z 1.105 -1.570 -35.572
Traceless
 xyz
x 0.419 -5.719 1.105
y -5.719 -0.176 -1.570
z 1.105 -1.570 -0.243
Polar
3z2-r2-0.486
x2-y20.396
xy-5.719
xz1.105
yz-1.570


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> 191.307
(<r2>)1/2 13.831