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All results from a given calculation for CH3NCO (methylisocyante)

using model chemistry: M06-2X/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 M06-2X/6-31G**
 hartrees
Energy at 0K-207.898378
Energy at 298.15K 
HF Energy-207.898378
Nuclear repulsion energy103.933254
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 M06-2X/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' 3177 3019 14.01 86.23 0.67 0.81
2 A' 3080 2927 38.99 157.67 0.01 0.02
3 A' 2454 2332 1141.37 2.50 0.09 0.16
4 A' 1567 1489 2.70 14.03 0.18 0.31
5 A' 1509 1434 7.89 24.27 0.67 0.80
6 A' 1473 1400 37.39 22.11 0.49 0.66
7 A' 1164 1106 16.70 2.81 0.65 0.78
8 A' 902 857 34.15 7.57 0.22 0.36
9 A' 629 598 33.79 0.39 0.67 0.80
10 A' 143 136 18.65 1.65 0.69 0.81
11 A" 3153 2996 17.64 74.62 0.75 0.86
12 A" 1524 1448 5.54 22.22 0.75 0.86
13 A" 1137 1081 0.02 2.84 0.75 0.86
14 A" 593 564 31.01 0.72 0.75 0.86
15 A" 64 61 3.22 1.14 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 11283.2 cm-1
Scaled (by 0.9504) Zero Point Vibrational Energy (zpe) 10723.6 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 M06-2X/6-31G**
ABC
2.91416 0.14305 0.13997

See section I.F.4 to change rotational constant units
Geometric Data calculated at M06-2X/6-31G**

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 1.288 1.189 0.000
N2 0.000 0.556 0.000
C3 -0.534 -0.516 0.000
O4 -1.173 -1.503 0.000
H5 1.151 2.271 0.000
H6 1.858 0.911 0.890
H7 1.858 0.911 -0.890

Atom - Atom Distances (Å)
  C1 N2 C3 O4 H5 H6 H7
C11.43492.49563.64761.09001.09291.0929
N21.43491.19792.37002.06502.09012.0901
C32.49561.19791.17583.25672.92392.9239
O43.64762.37001.17584.43213.97553.9755
H51.09002.06503.25674.43211.77231.7723
H61.09292.09012.92393.97551.77231.7797
H71.09292.09012.92393.97551.77231.7797

picture of methylisocyante state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 N2 C3 142.679 N2 C1 H5 108.980
N2 C1 H6 110.830 N2 C1 H7 110.830
N2 C3 O4 173.595 H5 C1 H6 108.563
H5 C1 H7 108.563 H6 C1 H7 109.017
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at M06-2X/6-31G** Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.213      
2 N -0.477      
3 C 0.656      
4 O -0.438      
5 H 0.161      
6 H 0.155      
7 H 0.155      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  2.555 1.745 0.000 3.095
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -22.127 -0.436 0.000
y -0.436 -24.495 0.000
z 0.000 0.000 -22.315
Traceless
 xyz
x 1.278 -0.436 0.000
y -0.436 -2.274 0.000
z 0.000 0.000 0.996
Polar
3z2-r21.991
x2-y22.368
xy-0.436
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 4.249 1.857 0.000
y 1.857 5.494 0.000
z 0.000 0.000 2.814


<r2> (average value of r2) Å2
<r2> 83.975
(<r2>)1/2 9.164