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All results from a given calculation for CH3NCO (methylisocyante)

using model chemistry: mPW1PW91/6-31+G**

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes Cs 1A'
Energy calculated at mPW1PW91/6-31+G**
 hartrees
Energy at 0K-207.943187
Energy at 298.15K 
HF Energy-207.943187
Nuclear repulsion energy103.906773
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 mPW1PW91/6-31+G**
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' 3172 3019 11.57 84.39 0.67 0.80
2 A' 3068 2920 50.22 192.32 0.02 0.03
3 A' 2428 2311 1133.37 2.36 0.01 0.01
4 A' 1543 1469 1.51 17.16 0.15 0.26
5 A' 1497 1425 12.60 18.89 0.54 0.70
6 A' 1469 1398 30.53 16.89 0.49 0.66
7 A' 1161 1105 16.37 1.77 0.68 0.81
8 A' 894 851 31.96 8.08 0.14 0.24
9 A' 621 591 31.51 0.73 0.66 0.79
10 A' 154 146 18.89 2.71 0.74 0.85
11 A" 3143 2991 17.44 84.18 0.75 0.86
12 A" 1514 1441 7.79 14.27 0.75 0.86
13 A" 1135 1080 0.00 1.08 0.75 0.86
14 A" 589 560 28.22 0.66 0.75 0.86
15 A" 52 50 3.34 1.55 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 11219.3 cm-1
Scaled (by 0.9518) Zero Point Vibrational Energy (zpe) 10678.5 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 mPW1PW91/6-31+G**
ABC
2.91955 0.14301 0.13994

See section I.F.4 to change rotational constant units
Geometric Data calculated at mPW1PW91/6-31+G**

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 1.281 1.193 0.000
N2 0.000 0.558 0.000
C3 -0.532 -0.517 0.000
O4 -1.168 -1.509 0.000
H5 1.141 2.274 0.000
H6 1.854 0.918 0.890
H7 1.854 0.918 -0.890

Atom - Atom Distances (Å)
  C1 N2 C3 O4 H5 H6 H7
C11.43032.49243.64741.08991.09341.0934
N21.43031.19902.37412.06132.08802.0880
C32.49241.19901.17873.25422.92302.9230
O43.64742.37411.17874.43253.97743.9774
H51.08992.06133.25424.43251.77151.7715
H61.09342.08802.92303.97741.77151.7797
H71.09342.08802.92303.97741.77151.7797

picture of methylisocyante state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 N2 C3 142.708 N2 C1 H5 109.004
N2 C1 H6 110.949 N2 C1 H7 110.949
N2 C3 O4 173.625 H5 C1 H6 108.463
H5 C1 H7 108.463 H6 C1 H7 108.943
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at mPW1PW91/6-31+G** Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.415      
2 N -0.308      
3 C 0.639      
4 O -0.459      
5 H 0.183      
6 H 0.180      
7 H 0.180      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  2.675 1.858 0.000 3.257
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -22.606 -0.539 0.000
y -0.539 -25.077 0.000
z 0.000 0.000 -22.651
Traceless
 xyz
x 1.258 -0.539 0.000
y -0.539 -2.449 0.000
z 0.000 0.000 1.191
Polar
3z2-r22.381
x2-y22.471
xy-0.539
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 4.765 2.003 0.000
y 2.003 6.153 0.000
z 0.000 0.000 3.225


<r2> (average value of r2) Å2
<r2> 84.272
(<r2>)1/2 9.180