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/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 B3LYP/3-21G
 hartrees
Energy at 0K-321.962306
Energy at 298.15K-321.971249
Nuclear repulsion energy243.232000
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/3-21G
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 3686 3557 34.61      
2 A 3566 3441 26.28      
3 A 3152 3042 18.82      
4 A 3140 3029 17.01      
5 A 3072 2964 12.07      
6 A 3054 2947 39.97      
7 A 3016 2910 28.87      
8 A 1813 1749 386.36      
9 A 1681 1622 101.38      
10 A 1583 1527 3.64      
11 A 1568 1513 9.94      
12 A 1551 1497 6.72      
13 A 1465 1414 8.84      
14 A 1417 1368 18.00      
15 A 1327 1281 0.53      
16 A 1306 1260 358.49      
17 A 1178 1137 4.05      
18 A 1155 1114 9.87      
19 A 1088 1050 23.40      
20 A 1057 1020 125.68      
21 A 972 937 21.20      
22 A 876 845 1.12      
23 A 825 796 21.07      
24 A 775 747 75.10      
25 A 563 543 135.29      
26 A 560 541 5.27      
27 A 544 525 5.36      
28 A 391 377 146.52      
29 A 372 359 0.89      
30 A 247 239 0.00      
31 A 206 199 3.55      
32 A 102 99 0.36      
33 A 22 21 0.58      

Unscaled Zero Point Vibrational Energy (zpe) 23664.6 cm-1
Scaled (by 0.9649) Zero Point Vibrational Energy (zpe) 22834.0 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 B3LYP/3-21G
ABC
0.28754 0.06906 0.05689

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3LYP/3-21G

Point Group is C1

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -2.581 -0.264 0.000
H2 -2.638 -0.900 0.887
H3 -3.423 0.435 0.001
H4 -2.639 -0.898 -0.887
C5 -1.256 0.495 0.000
H6 -1.172 1.128 -0.894
H7 -1.171 1.127 0.895
O8 -0.209 -0.534 -0.001
N9 1.405 1.169 0.000
H10 0.698 1.888 -0.001
H11 2.378 1.445 0.001
C12 1.142 -0.180 -0.000
O13 1.997 -1.055 0.001

Atom - Atom Distances (Å)
  C1 H2 H3 H4 C5 H6 H7 O8 N9 H10 H11 C12 O13
C11.09291.09471.09291.52702.17272.17272.38724.23563.92205.24523.72404.6463
H21.09291.78461.77462.15463.07102.50152.61184.62704.43735.60723.94864.7216
H31.09471.78461.78462.16822.51952.51973.35734.88394.36995.88874.60685.6220
H41.09291.77461.78462.15462.50153.07102.61174.62744.43675.60793.94934.7229
C51.52702.15462.16822.15461.09821.09821.46832.74502.39963.75622.49163.6042
H62.17273.07102.51952.50151.09821.78832.11812.72832.20723.67512.80483.9515
H72.17272.50152.51973.07101.09821.78832.11812.72742.20823.67382.80363.9497
O82.38722.61183.35732.61171.46832.11812.11812.34622.58653.25721.39672.2672
N94.23564.62704.88394.62742.74502.72832.72742.34621.00891.01151.37452.3017
H103.92204.43734.36994.43672.39962.20722.20822.58651.00891.73782.11593.2178
H115.24525.60725.88875.60793.75623.67513.67383.25721.01151.73782.04192.5292
C123.72403.94864.60683.94932.49162.80482.80361.39671.37452.11592.04191.2236
O134.64634.72165.62204.72293.60423.95153.94972.26722.30173.21782.52921.2236

picture of Urethane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C5 H6 110.651 C1 C5 H7 110.658
C1 C5 O8 105.674 H2 C1 H3 109.330
H2 C1 H4 108.564 H2 C1 C5 109.542
H3 C1 H4 109.329 H3 C1 C5 110.504
H4 C1 C5 109.541 C5 O8 C12 120.822
H6 C5 H7 109.020 H6 C5 O8 110.408
H7 C5 O8 110.405 O8 C12 N9 115.695
O8 C12 O13 119.680 N9 C12 O13 124.625
H10 N9 H11 118.657 H10 N9 C12 124.468
H11 N9 C12 116.875
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3LYP/3-21G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.563     -0.480
2 H 0.218     0.154
3 H 0.189     0.112
4 H 0.218     0.154
5 C -0.162     0.361
6 H 0.190     0.005
7 H 0.190     0.005
8 O -0.510     -0.508
9 N -0.781     -0.899
10 H 0.320     0.357
11 H 0.328     0.398
12 C 0.870     0.889
13 O -0.508     -0.549


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -2.207 4.739 -0.000 5.228
CHELPG        
AIM        
ESP -2.220 4.710 -0.000 5.207


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -35.149 6.041 -0.003
y 6.041 -34.941 -0.004
z -0.003 -0.004 -35.928
Traceless
 xyz
x 0.286 6.041 -0.003
y 6.041 0.597 -0.004
z -0.003 -0.004 -0.883
Polar
3z2-r2-1.765
x2-y2-0.208
xy6.041
xz-0.003
yz-0.004


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 8.005 -0.407 0.001
y -0.407 6.194 -0.000
z 0.001 -0.000 3.892


<r2> (average value of r2) Å2
<r2> 195.960
(<r2>)1/2 13.999