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All results from a given calculation for NH2COOC2H5 (Urethane)

using model chemistry: HF/6-31G

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/6-31G
 hartrees
Energy at 0K-321.721152
Energy at 298.15K-321.730584
Nuclear repulsion energy245.862420
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/6-31G
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 4014 3624 66.39      
2 A 3876 3500 61.21      
3 A 3309 2987 31.99      
4 A 3285 2966 28.18      
5 A 3253 2937 33.17      
6 A 3211 2899 21.93      
7 A 3202 2891 29.69      
8 A 1901 1716 693.34      
9 A 1827 1650 139.92      
10 A 1687 1523 3.60      
11 A 1656 1495 6.40      
12 A 1640 1481 6.25      
13 A 1588 1434 6.33      
14 A 1565 1413 39.63      
15 A 1479 1335 489.55      
16 A 1436 1297 0.09      
17 A 1297 1171 10.03      
18 A 1260 1137 15.50      
19 A 1207 1090 57.30      
20 A 1202 1085 122.98      
21 A 1074 969 7.84      
22 A 928 838 0.18      
23 A 912 823 15.01      
24 A 854 771 207.27      
25 A 659 595 219.54      
26 A 617 557 6.29      
27 A 590 533 18.98      
28 A 468 423 96.47      
29 A 396 357 2.61      
30 A 263 237 0.26      
31 A 216 195 3.91      
32 A 99 89 0.43      
33 A 73 66 0.01      

Unscaled Zero Point Vibrational Energy (zpe) 25520.4 cm-1
Scaled (by 0.9029) Zero Point Vibrational Energy (zpe) 23042.4 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 HF/6-31G
ABC
0.29541 0.06975 0.05763

See section I.F.4 to change rotational constant units
Geometric Data calculated at HF/6-31G

Point Group is C1

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 2.566 -0.269 0.000
H2 2.622 -0.900 -0.876
H3 3.413 0.407 0.001
H4 2.622 -0.899 0.877
C5 1.271 0.512 -0.000
H6 1.188 1.134 0.883
H7 1.189 1.133 -0.884
O8 0.205 -0.464 -0.001
N9 -1.463 1.131 0.000
H10 -0.816 1.877 -0.001
H11 -2.430 1.345 0.001
C12 -1.120 -0.184 -0.000
O13 -1.936 -1.082 0.000

Atom - Atom Distances (Å)
  C1 H2 H3 H4 C5 H6 H7 O8 N9 H10 H11 C12 O13
C11.08111.08391.08111.51232.15512.15522.36914.26494.00535.25033.68674.5751
H21.08111.76101.75292.14153.04702.48752.60774.64534.50545.59773.90934.6457
H31.08391.76101.76102.14462.50132.50143.32434.92934.47715.91814.57135.5529
H41.08111.75291.76102.14152.48733.04712.60794.64454.50495.59683.90884.6451
C51.51232.14152.14462.14151.08311.08311.44552.80292.49363.79382.49033.5820
H62.15513.04702.50132.48731.08311.76692.07342.79412.31293.73052.80053.9310
H72.15522.48752.50143.04711.08311.76692.07332.79522.31363.73162.80123.9316
O82.36912.60773.32432.60791.44552.07342.07332.30712.55373.19591.35382.2287
N94.26494.64534.92934.64452.80292.79412.79522.30710.98790.99081.35872.2631
H104.00534.50544.47714.50492.49362.31292.31362.55370.98791.70002.08363.1646
H115.25035.59775.91815.59683.79383.73053.73163.19590.99081.70002.01352.4768
C123.68673.90934.57133.90882.49032.80052.80121.35381.35872.08362.01351.2139
O134.57514.64575.55294.64513.58203.93103.93162.22872.26313.16462.47681.2139

picture of Urethane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C5 H6 111.191 C1 C5 H7 111.200
C1 C5 O8 106.421 H2 C1 H3 108.857
H2 C1 H4 108.335 H2 C1 C5 110.225
H3 C1 H4 108.858 H3 C1 C5 110.296
H4 C1 C5 110.223 C5 O8 C12 125.611
H6 C5 H7 109.310 H6 C5 O8 109.335
H7 C5 O8 109.320 O8 C12 N9 116.540
O8 C12 O13 120.350 N9 C12 O13 123.110
H10 N9 H11 118.440 H10 N9 C12 124.466
H11 N9 C12 117.093
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HF/6-31G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.449 -0.344    
2 H 0.189 0.114    
3 H 0.155 0.055    
4 H 0.189 0.114    
5 C 0.007 0.636    
6 H 0.167 -0.059    
7 H 0.167 -0.059    
8 O -0.725 -0.783    
9 N -0.947 -1.162    
10 H 0.388 0.438    
11 H 0.402 0.459    
12 C 1.036 1.373    
13 O -0.580 -0.784    


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  2.957 5.712 -0.001 6.432
CHELPG 2.985 5.699 -0.001 6.434
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -36.294 -7.099 0.002
y -7.099 -36.940 -0.003
z 0.002 -0.003 -36.679
Traceless
 xyz
x 0.516 -7.099 0.002
y -7.099 -0.453 -0.003
z 0.002 -0.003 -0.062
Polar
3z2-r2-0.125
x2-y20.646
xy-7.099
xz0.002
yz-0.003


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 7.291 0.551 -0.001
y 0.551 6.141 -0.000
z -0.001 -0.000 4.111


<r2> (average value of r2) Å2
<r2> 194.744
(<r2>)1/2 13.955