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All results from a given calculation for CH3NCO (methylisocyante)

using model chemistry: wB97X-D/CEP-121G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes Cs 1A'
Energy calculated at wB97X-D/CEP-121G*
 hartrees
Energy at 0K-38.991126
Energy at 298.15K 
HF Energy-38.991126
Nuclear repulsion energy55.293962
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 wB97X-D/CEP-121G*
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' 3155 3155 26.36 88.92 0.65 0.79
2 A' 3052 3052 62.70 176.02 0.01 0.02
3 A' 2370 2370 1162.70 2.19 0.03 0.05
4 A' 1523 1523 1.38 6.90 0.36 0.53
5 A' 1495 1495 12.28 19.18 0.50 0.66
6 A' 1475 1475 43.79 24.22 0.38 0.55
7 A' 1164 1164 16.76 4.07 0.64 0.78
8 A' 889 889 40.02 10.93 0.18 0.31
9 A' 641 641 31.51 0.44 0.70 0.82
10 A' 162 162 18.34 1.61 0.71 0.83
11 A" 3125 3125 35.08 79.39 0.75 0.86
12 A" 1525 1525 6.56 17.44 0.75 0.86
13 A" 1138 1138 0.06 2.79 0.75 0.86
14 A" 597 597 27.59 0.73 0.75 0.86
15 A" 70 70 2.60 1.15 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 11189.1 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 11189.1 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 wB97X-D/CEP-121G*
ABC
2.57068 0.14409 0.14008

See section I.F.4 to change rotational constant units
Geometric Data calculated at wB97X-D/CEP-121G*

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 1.364 1.091 0.000
N2 0.000 0.592 0.000
C3 -0.568 -0.472 0.000
O4 -1.240 -1.443 0.000
H5 1.338 2.183 0.000
H6 1.902 0.753 0.892
H7 1.902 0.753 -0.892

Atom - Atom Distances (Å)
  C1 N2 C3 O4 H5 H6 H7
C11.45312.48583.63421.09161.09521.0952
N21.45311.20602.38302.07852.10672.1067
C32.48581.20601.18093.26792.89762.8976
O43.63422.38301.18094.44873.93553.9355
H51.09162.07853.26794.44871.77731.7773
H61.09522.10672.89763.93551.77731.7849
H71.09522.10672.89763.93551.77731.7849

picture of methylisocyante state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 N2 C3 138.219 N2 C1 H5 108.701
N2 C1 H6 110.744 N2 C1 H7 110.744
N2 C3 O4 173.445 H5 C1 H6 108.726
H5 C1 H7 108.726 H6 C1 H7 109.150
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at wB97X-D/CEP-121G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.457      
2 N -0.036      
3 C 0.153      
4 O -0.264      
5 H 0.209      
6 H 0.198      
7 H 0.198      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  2.717 1.529 0.000 3.118
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -22.097 -0.465 0.000
y -0.465 -24.665 0.000
z 0.000 0.000 -22.342
Traceless
 xyz
x 1.407 -0.465 0.000
y -0.465 -2.446 0.000
z 0.000 0.000 1.039
Polar
3z2-r22.077
x2-y22.569
xy-0.465
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 4.648 1.871 0.000
y 1.871 5.624 0.000
z 0.000 0.000 3.107


<r2> (average value of r2) Å2
<r2> 68.766
(<r2>)1/2 8.292