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All results from a given calculation for CH3NCO (methylisocyante)

using model chemistry: PBE1PBE/6-311G*

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/6-311G*
 hartrees
Energy at 0K-207.803929
Energy at 298.15K 
HF Energy-207.803929
Nuclear repulsion energy104.364358
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/6-311G*
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' 3154 3023 19.21 84.46 0.66 0.79
2 A' 3055 2928 50.45 165.61 0.02 0.03
3 A' 2439 2338 1054.18 2.26 0.03 0.06
4 A' 1547 1483 2.89 12.21 0.14 0.25
5 A' 1505 1442 12.30 20.58 0.62 0.77
6 A' 1475 1413 29.75 21.23 0.46 0.63
7 A' 1166 1117 14.88 2.42 0.61 0.76
8 A' 906 869 31.47 7.22 0.21 0.35
9 A' 648 621 30.59 0.41 0.66 0.80
10 A' 167 160 17.64 1.80 0.68 0.81
11 A" 3122 2993 25.96 78.50 0.75 0.86
12 A" 1524 1461 7.86 16.03 0.75 0.86
13 A" 1141 1093 0.01 2.02 0.75 0.86
14 A" 606 581 27.75 0.67 0.75 0.86
15 A" 53 51 2.66 1.07 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 11252.4 cm-1
Scaled (by 0.9585) Zero Point Vibrational Energy (zpe) 10785.5 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/6-311G*
ABC
2.77107 0.14543 0.14188

See section I.F.4 to change rotational constant units
Geometric Data calculated at PBE1PBE/6-311G*

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 1.313 1.136 0.000
N2 0.000 0.570 0.000
C3 -0.549 -0.493 0.000
O4 -1.195 -1.467 0.000
H5 1.233 2.223 0.000
H6 1.873 0.833 0.889
H7 1.873 0.833 -0.889

Atom - Atom Distances (Å)
  C1 N2 C3 O4 H5 H6 H7
C11.42962.47353.61461.09001.09361.0936
N21.42961.19592.36162.06252.09022.0902
C32.47351.19591.16923.24832.90102.9010
O43.61462.36161.16924.41743.93683.9368
H51.09002.06253.24834.41741.76951.7695
H61.09362.09022.90103.93681.76951.7778
H71.09362.09022.90103.93681.76951.7778

picture of methylisocyante state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 N2 C3 140.658 N2 C1 H5 109.143
N2 C1 H6 111.169 N2 C1 H7 111.169
N2 C3 O4 173.764 H5 C1 H6 108.263
H5 C1 H7 108.263 H6 C1 H7 108.744
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at PBE1PBE/6-311G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.552      
2 N -0.395      
3 C 0.509      
4 O -0.296      
5 H 0.250      
6 H 0.242      
7 H 0.242      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  2.499 1.552 0.000 2.942
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -22.257 -0.491 0.000
y -0.491 -24.632 0.000
z 0.000 0.000 -22.402
Traceless
 xyz
x 1.261 -0.491 0.000
y -0.491 -2.303 0.000
z 0.000 0.000 1.042
Polar
3z2-r22.085
x2-y22.376
xy-0.491
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 4.442 1.847 0.000
y 1.847 5.438 0.000
z 0.000 0.000 2.916


<r2> (average value of r2) Å2
<r2> 83.142
(<r2>)1/2 9.118