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All results from a given calculation for NH2COOC2H5 (Urethane)

using model chemistry: HF/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 HF/CEP-121G
 hartrees
Energy at 0K-61.485938
Energy at 298.15K-61.495282
Nuclear repulsion energy136.875366
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 HF/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 3994 3645 48.90      
2 A 3837 3501 49.49      
3 A 3281 2994 53.23      
4 A 3258 2972 45.96      
5 A 3228 2946 33.20      
6 A 3173 2896 35.51      
7 A 3160 2883 41.00      
8 A 1840 1679 615.47      
9 A 1794 1637 278.71      
10 A 1665 1520 4.85      
11 A 1636 1493 5.57      
12 A 1619 1478 6.68      
13 A 1568 1431 12.02      
14 A 1540 1405 34.18      
15 A 1452 1325 502.32      
16 A 1414 1290 0.63      
17 A 1283 1171 9.38      
18 A 1244 1135 12.56      
19 A 1196 1091 164.68      
20 A 1187 1083 27.73      
21 A 1060 967 13.00      
22 A 909 829 0.05      
23 A 893 814 15.83      
24 A 818 746 115.95      
25 A 613 560 194.84      
26 A 596 544 7.06      
27 A 574 524 19.55      
28 A 448 409 140.02      
29 A 388 354 2.36      
30 A 253 231 0.32      
31 A 212 193 3.99      
32 A 94 86 0.20      
33 A 72 66 0.00      

Unscaled Zero Point Vibrational Energy (zpe) 25148.1 cm-1
Scaled (by 0.9125) Zero Point Vibrational Energy (zpe) 22947.6 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 HF/CEP-121G
ABC
0.29152 0.06875 0.05681

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

Point Group is C1

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -2.564 -0.253 0.000
H2 -2.636 -0.882 0.880
H3 -3.394 0.448 0.000
H4 -2.637 -0.883 -0.878
C5 -1.242 0.506 -0.000
H6 -1.148 1.126 -0.888
H7 -1.148 1.126 0.887
O8 -0.186 -0.495 -0.000
N9 1.510 1.105 -0.000
H10 0.867 1.857 0.001
H11 2.482 1.302 0.001
C12 1.147 -0.220 -0.000
O13 1.969 -1.130 0.000

Atom - Atom Distances (Å)
  C1 H2 H3 H4 C5 H6 H7 O8 N9 H10 H11 C12 O13
C11.08341.08661.08341.52472.16692.16682.39024.29394.02795.28043.71134.6171
H21.08341.76541.75792.15553.06122.50002.63224.68094.53295.63403.94044.6952
H31.08661.76541.76542.15292.50852.50853.34374.94744.48785.93804.59025.5906
H41.08341.75791.76542.15542.50013.06112.63204.68114.53395.63483.94064.6954
C51.52472.15552.15292.15541.08661.08661.45502.81582.50443.80822.49723.6040
H62.16693.06122.50852.50011.08661.77502.08322.80212.32073.74182.80523.9492
H72.16682.50002.50853.06111.08661.77502.08342.80152.31873.74052.80483.9488
O82.39022.63223.34372.63201.45502.08322.08342.33102.57703.21691.36122.2469
N94.29394.68094.94744.68112.81582.80212.80152.33100.98980.99251.37382.2818
H104.02794.53294.48784.53392.50442.32072.31872.57700.98981.70832.09673.1846
H115.28045.63405.93805.63483.80823.74183.74053.21690.99251.70832.02492.4859
C123.71133.94044.59023.94062.49722.80522.80481.36121.37382.09672.02491.2262
O134.61714.69525.59064.69543.60403.94923.94882.24692.28183.18462.48591.2262

picture of Urethane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C5 H6 111.052 C1 C5 H7 111.045
C1 C5 O8 106.652 H2 C1 H3 108.883
H2 C1 H4 108.446 H2 C1 C5 110.331
H3 C1 H4 108.880 H3 C1 C5 109.935
H4 C1 C5 110.324 C5 O8 C12 124.897
H6 C5 H7 109.524 H6 C5 O8 109.245
H7 C5 O8 109.255 O8 C12 N9 116.923
O8 C12 O13 120.460 N9 C12 O13 122.616
H10 N9 H11 119.033 H10 N9 C12 124.205
H11 N9 C12 116.761
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HF/CEP-121G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.446      
2 H 0.171      
3 H 0.143      
4 H 0.171      
5 C -0.056      
6 H 0.142      
7 H 0.142      
8 O -0.355      
9 N -0.690      
10 H 0.361      
11 H 0.373      
12 C 0.355      
13 O -0.312      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -3.068 5.921 0.006 6.669
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -36.815 7.684 0.010
y 7.684 -37.755 0.012
z 0.010 0.012 -36.882
Traceless
 xyz
x 0.503 7.684 0.010
y 7.684 -0.907 0.012
z 0.010 0.012 0.404
Polar
3z2-r20.807
x2-y20.940
xy7.684
xz0.010
yz0.012


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 7.745 -0.597 0.000
y -0.597 6.600 -0.000
z 0.000 -0.000 4.855


<r2> (average value of r2) Å2
<r2> 160.041
(<r2>)1/2 12.651