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All results from a given calculation for NH2COOC2H5 (Urethane)

using model chemistry: B3PW91/6-31G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C1 1A
Energy calculated at B3PW91/6-31G*
 hartrees
Energy at 0K-323.623538
Energy at 298.15K-323.632684
Nuclear repulsion energy246.346795
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 B3PW91/6-31G*
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
(Å4/u)
Dep P Dep U
1 A 3725 3563 39.23      
2 A 3610 3454 23.96      
3 A 3165 3028 19.70      
4 A 3155 3019 19.25      
5 A 3082 2949 26.46      
6 A 3075 2942 13.98      
7 A 3015 2885 45.14      
8 A 1881 1799 481.32      
9 A 1658 1586 135.24      
10 A 1547 1480 1.39      
11 A 1525 1459 4.59      
12 A 1509 1444 6.46      
13 A 1449 1386 6.85      
14 A 1421 1360 46.03      
15 A 1361 1302 357.59      
16 A 1318 1261 1.36      
17 A 1188 1137 5.40      
18 A 1169 1119 34.37      
19 A 1123 1074 102.56      
20 A 1110 1062 28.85      
21 A 1003 959 11.92      
22 A 871 834 12.81      
23 A 843 806 1.07      
24 A 773 739 42.24      
25 A 578 553 38.12      
26 A 558 534 21.85      
27 A 548 524 76.20      
28 A 407 389 120.74      
29 A 379 363 13.45      
30 A 265 253 0.57      
31 A 217 207 2.20      
32 A 113 108 1.21      
33 A 89 86 1.64      

Unscaled Zero Point Vibrational Energy (zpe) 23864.2 cm-1
Scaled (by 0.9567) Zero Point Vibrational Energy (zpe) 22830.8 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 B3PW91/6-31G*
ABC
0.29286 0.07101 0.05861

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3PW91/6-31G*

Point Group is C1

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 2.553 -0.247 0.056
H2 2.705 -0.856 -0.840
H3 3.372 0.476 0.130
H4 2.587 -0.905 0.929
C5 1.224 0.475 -0.011
H6 1.059 1.082 0.889
H7 1.198 1.140 -0.888
O8 0.201 -0.516 -0.119
N9 -1.393 1.160 0.080
H10 -0.774 1.844 -0.329
H11 -2.378 1.366 -0.004
C12 -1.111 -0.185 -0.012
O13 -1.953 -1.050 0.038

Atom - Atom Distances (Å)
  C1 H2 H3 H4 C5 H6 H7 O8 N9 H10 H11 C12 O13
C11.09401.09521.09391.51442.16632.15682.37374.18943.94845.18823.66484.5773
H21.09401.77791.77422.15753.07502.50132.62764.65864.43325.60973.96134.7441
H31.09521.77791.77832.15322.50882.49103.33204.81424.39025.82004.53375.5406
H41.09391.77421.77832.15552.50673.06822.63484.56324.52055.53843.88274.6289
C51.51442.15752.15322.15551.09761.10131.42832.70622.44243.70992.42613.5246
H62.16633.07502.50882.50671.09761.78362.07532.58322.32913.56232.67003.7878
H72.15682.50132.49103.06821.10131.78362.08022.76602.16723.69042.80253.9480
O82.37372.62763.33202.63481.42832.07532.08022.32152.56203.19461.35692.2252
N94.18944.65864.81424.56322.70622.58322.76602.32151.00911.00961.37812.2809
H103.94844.43324.39024.52052.44242.32912.16722.56201.00911.70472.08163.1470
H115.18825.60975.82005.53843.70993.56233.69043.19461.00961.70472.00342.4540
C123.66483.96134.53373.88272.42612.67002.80251.35691.37812.08162.00341.2085
O134.57734.74415.54064.62893.52463.78783.94802.22522.28093.14702.45401.2085

picture of Urethane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C5 H6 111.063 C1 C5 H7 110.081
C1 C5 O8 107.499 H2 C1 H3 108.602
H2 C1 H4 108.375 H2 C1 C5 110.571
H3 C1 H4 108.653 H3 C1 C5 110.158
H4 C1 C5 110.424 C5 O8 C12 121.149
H6 C5 H7 108.419 H6 C5 O8 109.805
H7 C5 O8 109.972 O8 C12 N9 116.163
O8 C12 O13 120.206 N9 C12 O13 123.591
H10 N9 H11 115.227 H10 N9 C12 120.597
H11 N9 C12 113.173
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3PW91/6-31G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.523     -0.475
2 H 0.194     0.143
3 H 0.174     0.104
4 H 0.196     0.148
5 C -0.104     0.453
6 H 0.182     -0.013
7 H 0.156     -0.032
8 O -0.451     -0.474
9 N -0.799     -0.891
10 H 0.352     0.351
11 H 0.368     0.392
12 C 0.747     0.840
13 O -0.492     -0.547


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  2.327 4.287 -0.692 4.926
CHELPG        
AIM        
ESP 2.352 4.257 -0.706 4.915


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -34.863 -5.881 1.139
y -5.881 -35.385 -1.597
z 1.139 -1.597 -35.686
Traceless
 xyz
x 0.672 -5.881 1.139
y -5.881 -0.110 -1.597
z 1.139 -1.597 -0.562
Polar
3z2-r2-1.124
x2-y20.522
xy-5.881
xz1.139
yz-1.597


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> 191.446
(<r2>)1/2 13.836