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All results from a given calculation for CH3NCO (methylisocyante)

using model chemistry: PBE1PBE/6-311+G(3df,2p)

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes Cs 1A'
Energy calculated at PBE1PBE/6-311+G(3df,2p)
 hartrees
Energy at 0K-207.827802
Energy at 298.15K 
HF Energy-207.827802
Nuclear repulsion energy104.481533
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 PBE1PBE/6-311+G(3df,2p)
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' 3139 3139 11.47 71.33 0.64 0.78
2 A' 3046 3046 45.01 203.27 0.02 0.03
3 A' 2413 2413 1153.49 2.24 0.02 0.04
4 A' 1539 1539 2.24 18.93 0.15 0.26
5 A' 1486 1486 11.76 11.98 0.51 0.67
6 A' 1456 1456 28.94 9.74 0.27 0.42
7 A' 1155 1155 17.41 0.59 0.74 0.85
8 A' 900 900 27.21 8.29 0.10 0.19
9 A' 653 653 30.27 0.56 0.52 0.68
10 A' 165 165 17.85 2.20 0.64 0.78
11 A" 3112 3112 15.56 70.47 0.75 0.86
12 A" 1502 1502 8.15 7.39 0.75 0.86
13 A" 1131 1131 0.01 0.25 0.75 0.86
14 A" 611 611 22.73 0.50 0.75 0.86
15 A" 39 39 1.97 0.72 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 11173.5 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 11173.5 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 PBE1PBE/6-311+G(3df,2p)
ABC
2.79008 0.14565 0.14214

See section I.F.4 to change rotational constant units
Geometric Data calculated at PBE1PBE/6-311+G(3df,2p)

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 1.309 1.139 0.000
N2 0.000 0.568 0.000
C3 -0.547 -0.493 0.000
O4 -1.191 -1.468 0.000
H5 1.226 2.224 0.000
H6 1.868 0.838 0.888
H7 1.868 0.838 -0.888

Atom - Atom Distances (Å)
  C1 N2 C3 O4 H5 H6 H7
C11.42822.47203.61231.08871.09181.0918
N21.42821.19392.35882.06082.08622.0862
C32.47201.19391.16833.24502.89772.8977
O43.61232.35881.16834.41333.93293.9329
H51.08872.06083.24504.41331.76761.7676
H61.09182.08622.89773.93291.76761.7758
H71.09182.08622.89773.93291.76761.7758

picture of methylisocyante state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 N2 C3 140.877 N2 C1 H5 109.191
N2 C1 H6 111.053 N2 C1 H7 111.053
N2 C3 O4 173.852 H5 C1 H6 108.318
H5 C1 H7 108.318 H6 C1 H7 108.825
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at PBE1PBE/6-311+G(3df,2p) Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.103      
2 N -1.037      
3 C 1.248      
4 O -0.676      
5 H 0.117      
6 H 0.123      
7 H 0.123      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  2.468 1.655 0.000 2.972
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -22.645 -0.639 0.000
y -0.639 -24.917 0.000
z 0.000 0.000 -22.616
Traceless
 xyz
x 1.122 -0.639 0.000
y -0.639 -2.287 0.000
z 0.000 0.000 1.165
Polar
3z2-r22.330
x2-y22.273
xy-0.639
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 5.449 1.897 0.000
y 1.897 6.281 0.000
z 0.000 0.000 3.794


<r2> (average value of r2) Å2
<r2> 83.199
(<r2>)1/2 9.121