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All results from a given calculation for NH2COOC2H5 (Urethane)

using model chemistry: G3B3

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C1 1A
Energy calculated at G3B3
 hartrees
Energy at 0K-323.528406
Energy at 298.15K-323.520408
Nuclear repulsion energy 
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/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 3695 3548 32.63      
2 A 3585 3442 20.78      
3 A 3148 3023 23.60      
4 A 3137 3012 23.09      
5 A 3075 2953 25.97      
6 A 3066 2944 14.86      
7 A 3008 2889 46.17      
8 A 1864 1790 467.78      
9 A 1659 1593 121.95      
10 A 1552 1490 1.63      
11 A 1530 1469 4.22      
12 A 1514 1454 5.34      
13 A 1451 1394 6.88      
14 A 1425 1368 19.72      
15 A 1348 1295 369.62      
16 A 1318 1266 2.89      
17 A 1191 1143 5.14      
18 A 1164 1118 20.09      
19 A 1108 1064 64.26      
20 A 1106 1062 100.83      
21 A 994 954 13.16      
22 A 862 828 13.38      
23 A 843 810 0.88      
24 A 767 737 43.82      
25 A 578 555 49.90      
26 A 555 533 39.67      
27 A 551 529 55.02      
28 A 414 398 109.88      
29 A 379 364 7.00      
30 A 264 253 0.63      
31 A 216 208 2.03      
32 A 109 104 1.41      
33 A 89 86 1.51      

Unscaled Zero Point Vibrational Energy (zpe) 23781.5 cm-1
Scaled (by 0.9603) Zero Point Vibrational Energy (zpe) 22837.3 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/6-31G*
ABC
0.29138 0.07049 0.05820

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3LYP/6-31G*

Point Group is C1

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 2.562 -0.248 0.053
H2 2.711 -0.850 -0.849
H3 3.383 0.473 0.131
H4 2.597 -0.913 0.921
C5 1.231 0.480 -0.005
H6 1.067 1.079 0.899
H7 1.202 1.151 -0.877
O8 0.202 -0.515 -0.120
N9 -1.402 1.163 0.081
H10 -0.788 1.844 -0.343
H11 -2.389 1.362 -0.011
C12 -1.115 -0.187 -0.013
O13 -1.956 -1.055 0.039

Atom - Atom Distances (Å)
  C1 H2 H3 H4 C5 H6 H7 O8 N9 H10 H11 C12 O13
C11.09411.09541.09401.51872.17112.16152.38174.20843.96965.20713.67864.5902
H21.09411.77831.77452.16133.07872.50602.63424.67264.44455.62173.97204.7554
H31.09541.77831.77882.15642.51392.49623.34034.83504.41585.84174.54855.5545
H41.09401.77451.77882.15942.51183.07202.64134.58354.54475.55923.89574.6400
C51.51872.16132.15642.15941.09691.10081.43552.72172.45973.72582.43893.5377
H62.17113.07872.51392.51181.09691.78262.08012.60322.36003.58542.68283.7996
H72.16152.50602.49623.07201.10081.78262.08522.77502.17393.69992.81193.9599
O82.38172.63423.34032.64131.43552.08012.08522.32972.56743.20121.36142.2305
N94.20844.67264.83504.58352.72172.60322.77502.32971.01031.01081.38312.2862
H103.96964.44454.41584.54472.45972.36002.17392.56741.01031.70422.08333.1485
H115.20715.62175.84175.55923.72583.58543.69993.20121.01081.70422.00592.4563
C123.67863.97204.54853.89572.43892.68282.81191.36141.38312.08332.00591.2098
O134.59024.75545.55454.64003.53773.79963.95992.23052.28623.14852.45631.2098

picture of Urethane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C5 H6 111.186 C1 C5 H7 110.189
C1 C5 O8 107.421 H2 C1 H3 108.621
H2 C1 H4 108.384 H2 C1 C5 110.570
H3 C1 H4 108.671 H3 C1 C5 110.108
H4 C1 C5 110.429 C5 O8 C12 121.360
H6 C5 H7 108.416 H6 C5 O8 109.728
H7 C5 O8 109.898 O8 C12 N9 116.173
O8 C12 O13 120.228 N9 C12 O13 123.555
H10 N9 H11 114.971 H10 N9 C12 120.212
H11 N9 C12 112.916
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3LYP/6-31G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.454 -0.330   -0.414
2 H 0.170 0.103   0.126
3 H 0.150 0.063   0.087
4 H 0.173 0.106   0.131
5 C -0.051 0.496   0.466
6 H 0.158 -0.041   -0.023
7 H 0.133 -0.058   -0.042
8 O -0.447 -0.505   -0.483
9 N -0.754 -0.882   -0.875
10 H 0.333 0.349   0.344
11 H 0.349 0.380   0.382
12 C 0.722 0.877   0.848
13 O -0.482 -0.558   -0.547


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  2.299 4.226 -0.708 4.863
CHELPG 2.325 4.206 -0.743 4.863
AIM        
ESP 2.326 4.198 -0.723 4.854


Electric Quadrupole moment
Quadrupole components in D Å


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> 192.736
(<r2>)1/2 13.883