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All results from a given calculation for NH2COOC2H5 (Urethane)

using model chemistry: B1B95/3-21G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C1 1A
Energy calculated at B1B95/3-21G*
 hartrees
Energy at 0K-321.827493
Energy at 298.15K-321.836490
Nuclear repulsion energy244.541290
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 B1B95/3-21G*
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 3722 3554 43.80      
2 A 3598 3435 32.02      
3 A 3178 3035 14.52      
4 A 3168 3025 14.75      
5 A 3089 2950 9.85      
6 A 3073 2934 37.18      
7 A 3028 2892 26.52      
8 A 1840 1757 401.71      
9 A 1685 1609 114.67      
10 A 1574 1503 3.05      
11 A 1561 1491 11.16      
12 A 1544 1474 8.04      
13 A 1459 1393 11.52      
14 A 1411 1347 37.91      
15 A 1320 1261 350.11      
16 A 1319 1259 1.31      
17 A 1177 1124 4.62      
18 A 1159 1107 13.60      
19 A 1097 1048 13.05      
20 A 1084 1035 116.83      
21 A 986 941 16.88      
22 A 872 833 1.25      
23 A 840 802 20.64      
24 A 784 749 84.91      
25 A 575 549 163.23      
26 A 560 535 5.27      
27 A 550 526 5.76      
28 A 414 395 122.61      
29 A 374 357 1.13      
30 A 246 235 0.02      
31 A 207 198 3.80      
32 A 106 101 0.24      
33 A 27 26 0.23      

Unscaled Zero Point Vibrational Energy (zpe) 23813.4 cm-1
Scaled (by 0.9549) Zero Point Vibrational Energy (zpe) 22739.4 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 B1B95/3-21G*
ABC
0.28987 0.07007 0.05766

See section I.F.4 to change rotational constant units
Geometric Data calculated at B1B95/3-21G*

Point Group is C1

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 2.563 -0.263 0.000
H2 2.618 -0.898 -0.886
H3 3.404 0.434 0.000
H4 2.618 -0.898 0.886
C5 1.243 0.490 -0.000
H6 1.155 1.120 0.894
H7 1.155 1.120 -0.894
O8 0.207 -0.538 -0.000
N9 -1.381 1.167 0.000
H10 -0.668 1.878 -0.001
H11 -2.349 1.453 0.000
C12 -1.134 -0.179 -0.000
O13 -1.994 -1.045 0.000

Atom - Atom Distances (Å)
  C1 H2 H3 H4 C5 H6 H7 O8 N9 H10 H11 C12 O13
C11.09121.09281.09121.51942.16652.16652.37124.19533.87535.20303.69754.6229
H21.09121.78231.77172.14523.06282.49252.59334.58774.39155.56683.92184.6986
H31.09281.78231.78232.16202.51602.51583.34144.84154.32035.84304.57945.5969
H41.09121.77171.78232.14522.49263.06272.59344.58744.39165.56643.92164.6984
C51.51942.14522.16202.14521.09711.09711.45942.71032.36153.71902.46923.5821
H62.16653.06282.51602.49261.09711.78792.10862.68922.16693.63112.77913.9237
H72.16652.49252.51583.06271.09711.78792.10862.68982.16673.63182.77953.9242
O82.37122.59333.34142.59341.45942.10862.10862.33092.56973.24091.38872.2587
N94.19534.58774.84154.58742.71032.68922.68982.33091.00701.00921.36872.2951
H103.87534.39154.32034.39162.36152.16692.16672.56971.00701.73412.10893.2092
H115.20305.56685.84305.56643.71903.63113.63183.24091.00921.73412.03502.5232
C123.69753.92184.57943.92162.46922.77912.77951.38871.36872.10892.03501.2201
O134.62294.69865.59694.69843.58213.92373.92422.25872.29513.20922.52321.2201

picture of Urethane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C5 H6 110.757 C1 C5 H7 110.752
C1 C5 O8 105.489 H2 C1 H3 109.382
H2 C1 H4 108.544 H2 C1 C5 109.421
H3 C1 H4 109.383 H3 C1 C5 110.655
H4 C1 C5 109.422 C5 O8 C12 120.201
H6 C5 H7 109.138 H6 C5 O8 110.333
H7 C5 O8 110.336 O8 C12 N9 115.413
O8 C12 O13 119.804 N9 C12 O13 124.783
H10 N9 H11 118.650 H10 N9 C12 124.461
H11 N9 C12 116.889
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B1B95/3-21G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.612      
2 H 0.237      
3 H 0.207      
4 H 0.237      
5 C -0.205      
6 H 0.209      
7 H 0.209      
8 O -0.518      
9 N -0.813      
10 H 0.335      
11 H 0.344      
12 C 0.882      
13 O -0.513      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  2.274 4.796 -0.001 5.308
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -35.033 -6.078 0.001
y -6.078 -34.751 -0.003
z 0.001 -0.003 -35.838
Traceless
 xyz
x 0.262 -6.078 0.001
y -6.078 0.684 -0.003
z 0.001 -0.003 -0.946
Polar
3z2-r2-1.893
x2-y2-0.282
xy-6.078
xz0.001
yz-0.003


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 7.881 0.409 -0.001
y 0.409 6.148 -0.000
z -0.001 -0.000 3.896


<r2> (average value of r2) Å2
<r2> 193.557
(<r2>)1/2 13.912