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All results from a given calculation for NH2COOC2H5 (Urethane)

using model chemistry: B1B95/6-31G(2df,p)

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C1 1A
Energy calculated at B1B95/6-31G(2df,p)
 hartrees
Energy at 0K-323.644132
Energy at 298.15K-323.653312
Nuclear repulsion energy247.674855
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 B1B95/6-31G(2df,p)
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 3753 3594 43.42      
2 A 3630 3477 25.98      
3 A 3164 3031 15.83      
4 A 3159 3025 15.59      
5 A 3071 2941 12.23      
6 A 3067 2937 23.78      
7 A 3004 2877 38.66      
8 A 1885 1805 478.89      
9 A 1623 1555 134.26      
10 A 1519 1455 1.40      
11 A 1495 1431 2.90      
12 A 1477 1415 5.19      
13 A 1426 1366 14.84      
14 A 1396 1337 46.81      
15 A 1352 1294 317.69      
16 A 1305 1250 1.20      
17 A 1177 1127 4.78      
18 A 1165 1115 56.58      
19 A 1126 1079 74.06      
20 A 1096 1049 23.14      
21 A 1002 959 13.14      
22 A 870 833 10.97      
23 A 835 799 0.70      
24 A 784 751 29.89      
25 A 576 552 25.00      
26 A 555 532 8.59      
27 A 537 515 61.16      
28 A 395 379 60.09      
29 A 377 361 67.18      
30 A 257 246 0.38      
31 A 222 212 2.44      
32 A 123 117 0.49      
33 A 97 93 1.40      

Unscaled Zero Point Vibrational Energy (zpe) 23759.1 cm-1
Scaled (by 0.9577) Zero Point Vibrational Energy (zpe) 22754.1 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 B1B95/6-31G(2df,p)
ABC
0.29620 0.07185 0.05927

See section I.F.4 to change rotational constant units
Geometric Data calculated at B1B95/6-31G(2df,p)

Point Group is C1

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 2.541 -0.245 0.055
H2 2.688 -0.872 -0.825
H3 3.354 0.481 0.107
H4 2.580 -0.880 0.941
C5 1.211 0.467 -0.021
H6 1.049 1.094 0.863
H7 1.178 1.112 -0.911
O8 0.197 -0.523 -0.102
N9 -1.372 1.159 0.081
H10 -0.733 1.832 -0.302
H11 -2.348 1.378 -0.018
C12 -1.107 -0.185 -0.009
O13 -1.952 -1.036 0.030

Atom - Atom Distances (Å)
  C1 H2 H3 H4 C5 H6 H7 O8 N9 H10 H11 C12 O13
C11.09081.09151.09071.51022.16142.15212.36494.15673.89295.15113.64814.5618
H21.09081.77321.76932.14983.06642.49502.61684.62894.39165.57393.94144.7208
H31.09151.77321.77362.14702.50262.48453.31944.77464.32395.77354.51185.5194
H41.09071.76931.77362.14832.49973.06012.62524.52934.45805.50473.87004.6254
C51.51022.14982.14702.14831.09581.09921.41982.67582.39143.67342.40793.5028
H62.16143.06642.50262.49971.09581.77862.06682.54452.25263.52052.65383.7732
H72.15212.49502.48453.06011.09921.77862.07142.73612.13043.64642.77743.9111
O82.36492.61683.31942.62521.41982.06682.07142.30762.54023.17771.35012.2136
N94.15674.62894.77464.52932.67582.54452.73612.30761.00421.00511.37302.2711
H103.89294.39164.32394.45802.39142.25262.13042.54021.00421.70172.07243.1344
H115.15115.57395.77355.50473.67343.52053.64643.17771.00511.70171.99582.4466
C123.64813.94144.51183.87002.40792.65382.77741.35011.37302.07241.99581.2003
O134.56184.72085.51944.62543.50283.77323.91112.21362.27113.13442.44661.2003

picture of Urethane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C5 H6 111.076 C1 C5 H7 110.131
C1 C5 O8 107.594 H2 C1 H3 108.686
H2 C1 H4 108.396 H2 C1 C5 110.452
H3 C1 H4 108.729 H3 C1 C5 110.186
H4 C1 C5 110.338 C5 O8 C12 120.728
H6 C5 H7 108.247 H6 C5 O8 109.817
H7 C5 O8 109.977 O8 C12 N9 115.862
O8 C12 O13 120.328 N9 C12 O13 123.771
H10 N9 H11 115.748 H10 N9 C12 120.546
H11 N9 C12 113.210
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B1B95/6-31G(2df,p) Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.410      
2 H 0.149      
3 H 0.132      
4 H 0.151      
5 C -0.084      
6 H 0.132      
7 H 0.114      
8 O -0.254      
9 N -0.606      
10 H 0.269      
11 H 0.282      
12 C 0.515      
13 O -0.391      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  2.326 4.070 -0.594 4.725
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -35.026 -5.704 0.914
y -5.704 -35.122 -1.364
z 0.914 -1.364 -35.401
Traceless
 xyz
x 0.236 -5.704 0.914
y -5.704 0.091 -1.364
z 0.914 -1.364 -0.327
Polar
3z2-r2-0.655
x2-y20.096
xy-5.704
xz0.914
yz-1.364


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 8.734 0.232 -0.087
y 0.232 7.005 -0.070
z -0.087 -0.070 5.113


<r2> (average value of r2) Å2
<r2> 189.398
(<r2>)1/2 13.762