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All results from a given calculation for CH3NCO (methylisocyante)

using model chemistry: B3LYPultrafine/6-31G**

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes Cs 1A'
Energy calculated at B3LYPultrafine/6-31G**
 hartrees
Energy at 0K-207.991978
Energy at 298.15K 
HF Energy-207.991978
Nuclear repulsion energy103.622997
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 B3LYPultrafine/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' 3135 3012 17.95 83.67 0.65 0.78
2 A' 3040 2921 47.70 155.82 0.02 0.03
3 A' 2397 2303 919.03 1.58 0.05 0.09
4 A' 1524 1464 0.67 7.18 0.31 0.48
5 A' 1494 1436 10.05 23.01 0.57 0.73
6 A' 1470 1412 42.69 29.80 0.40 0.57
7 A' 1161 1116 16.20 3.01 0.65 0.79
8 A' 883 848 31.62 7.18 0.21 0.35
9 A' 619 594 27.56 0.51 0.70 0.83
10 A' 171 164 15.99 1.90 0.65 0.78
11 A" 3104 2983 23.56 74.37 0.75 0.86
12 A" 1518 1458 4.84 21.81 0.75 0.86
13 A" 1133 1088 0.00 3.06 0.75 0.86
14 A" 568 546 25.09 0.69 0.75 0.86
15 A" 49 47 2.51 1.01 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 11132.2 cm-1
Scaled (by 0.9608) Zero Point Vibrational Energy (zpe) 10695.8 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 B3LYPultrafine/6-31G**
ABC
2.71271 0.14360 0.14000

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3LYPultrafine/6-31G**

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 1.330 1.132 0.000
N2 0.000 0.580 0.000
C3 -0.550 -0.493 0.000
O4 -1.215 -1.469 0.000
H5 1.262 2.222 0.000
H6 1.888 0.822 0.890
H7 1.888 0.822 -0.890

Atom - Atom Distances (Å)
  C1 N2 C3 O4 H5 H6 H7
C11.43992.48443.63891.09181.09531.0953
N21.43991.20532.38222.07082.10122.1012
C32.48441.20531.18153.26362.90912.9091
O43.63892.38221.18154.44503.95873.9587
H51.09182.07083.26364.44501.77251.7725
H61.09532.10122.90913.95871.77251.7804
H71.09532.10122.90913.95871.77251.7804

picture of methylisocyante state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 N2 C3 139.670 N2 C1 H5 108.989
N2 C1 H6 111.232 N2 C1 H7 111.232
N2 C3 O4 172.848 H5 C1 H6 108.280
H5 C1 H7 108.280 H6 C1 H7 108.738
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3LYPultrafine/6-31G** Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.177      
2 N -0.438      
3 C 0.615      
4 O -0.413      
5 H 0.141      
6 H 0.136      
7 H 0.136      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  2.496 1.530 0.000 2.928
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -22.092 -0.492 0.000
y -0.492 -24.464 0.000
z 0.000 0.000 -22.261
Traceless
 xyz
x 1.270 -0.492 0.000
y -0.492 -2.287 0.000
z 0.000 0.000 1.017
Polar
3z2-r22.034
x2-y22.372
xy-0.492
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 4.410 1.900 0.000
y 1.900 5.382 0.000
z 0.000 0.000 2.801


<r2> (average value of r2) Å2
<r2> 83.921
(<r2>)1/2 9.161