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All results from a given calculation for NH2COOC2H5 (Urethane)

using model chemistry: B3PW91/3-21G

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C1 1A
Energy calculated at B3PW91/3-21G
 hartrees
Energy at 0K-321.845142
Energy at 298.15K-321.854169
Nuclear repulsion energy243.828020
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 B3PW91/3-21G
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 3714 3570 43.32      
2 A 3592 3453 30.25      
3 A 3166 3043 15.60      
4 A 3153 3031 14.99      
5 A 3076 2957 10.63      
6 A 3063 2944 37.89      
7 A 3020 2902 27.83      
8 A 1828 1757 394.57      
9 A 1681 1616 111.33      
10 A 1575 1513 3.66      
11 A 1562 1501 10.58      
12 A 1544 1484 8.04      
13 A 1459 1402 12.12      
14 A 1417 1362 27.98      
15 A 1328 1276 0.76      
16 A 1318 1267 360.89      
17 A 1178 1132 4.38      
18 A 1157 1112 12.34      
19 A 1093 1051 13.39      
20 A 1076 1034 118.71      
21 A 982 944 18.02      
22 A 877 843 1.49      
23 A 835 803 20.69      
24 A 783 753 83.40      
25 A 574 551 158.61      
26 A 562 540 5.60      
27 A 548 527 5.31      
28 A 411 395 130.33      
29 A 374 360 1.02      
30 A 250 241 0.01      
31 A 208 200 3.74      
32 A 108 104 0.27      
33 A 33 32 0.27      

Unscaled Zero Point Vibrational Energy (zpe) 23772.0 cm-1
Scaled (by 0.9612) Zero Point Vibrational Energy (zpe) 22849.6 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 B3PW91/3-21G
ABC
0.28873 0.06951 0.05724

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3PW91/3-21G

Point Group is C1

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -2.573 -0.262 0.000
H2 -2.632 -0.899 0.888
H3 -3.414 0.439 0.001
H4 -2.632 -0.898 -0.888
C5 -1.249 0.491 0.000
H6 -1.165 1.123 -0.895
H7 -1.165 1.122 0.896
O8 -0.208 -0.536 -0.000
N9 1.394 1.168 0.000
H10 0.684 1.885 -0.000
H11 2.365 1.448 0.000
C12 1.138 -0.179 -0.000
O13 1.996 -1.050 0.000

Atom - Atom Distances (Å)
  C1 H2 H3 H4 C5 H6 H7 O8 N9 H10 H11 C12 O13
C11.09371.09551.09371.52302.16862.16862.38114.21713.90115.22623.71164.6363
H21.09371.78581.77582.15183.06882.49742.60744.61184.41955.59183.93924.7148
H31.09551.78581.78582.16542.51532.51543.35164.86304.34565.86674.59355.6113
H41.09371.77581.78582.15182.49743.06882.60734.61194.41935.59213.93944.7152
C51.52302.15182.16542.15181.09931.09931.46262.72872.38353.73922.47903.5924
H62.16863.06882.51532.49741.09931.79112.11422.71172.19123.65682.79273.9392
H72.16862.49742.51543.06881.09931.79112.11422.71142.19153.65632.79223.9385
O82.38112.60743.35162.60731.46262.11422.11422.33882.57983.24931.39192.2627
N94.21714.61184.86304.61192.72872.71172.71142.33881.00851.01081.37122.2987
H103.90114.41954.34564.41932.38352.19122.19152.57981.00851.73682.11263.2147
H115.22625.59185.86675.59213.73923.65683.65633.24931.01081.73682.03832.5258
C123.71163.93924.59353.93942.47902.79272.79221.39191.37122.11262.03831.2232
O134.63634.71485.61134.71523.59243.93923.93852.26272.29873.21472.52581.2232

picture of Urethane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C5 H6 110.541 C1 C5 H7 110.543
C1 C5 O8 105.775 H2 C1 H3 109.323
H2 C1 H4 108.551 H2 C1 C5 109.547
H3 C1 H4 109.323 H3 C1 C5 110.519
H4 C1 C5 109.546 C5 O8 C12 120.536
H6 C5 H7 109.108 H6 C5 O8 110.424
H7 C5 O8 110.423 O8 C12 N9 115.651
O8 C12 O13 119.684 N9 C12 O13 124.665
H10 N9 H11 118.646 H10 N9 C12 124.488
H11 N9 C12 116.866
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3PW91/3-21G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.628      
2 H 0.241      
3 H 0.211      
4 H 0.241      
5 C -0.209      
6 H 0.213      
7 H 0.213      
8 O -0.515      
9 N -0.820      
10 H 0.339      
11 H 0.347      
12 C 0.885      
13 O -0.517      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -2.271 4.821 -0.000 5.329
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -35.012 6.140 -0.001
y 6.140 -34.765 -0.001
z -0.001 -0.001 -35.873
Traceless
 xyz
x 0.307 6.140 -0.001
y 6.140 0.678 -0.001
z -0.001 -0.001 -0.984
Polar
3z2-r2-1.969
x2-y2-0.248
xy6.140
xz-0.001
yz-0.001


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> 194.837
(<r2>)1/2 13.958