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All results from a given calculation for CH3NCO (methylisocyante)

using model chemistry: mPW1PW91/cc-pVDZ

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/cc-pVDZ
 hartrees
Energy at 0K-207.947383
Energy at 298.15K 
HF Energy-207.947383
Nuclear repulsion energy104.018098
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/cc-pVDZ
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' 3166 3034 13.17 88.34 0.67 0.80
2 A' 3056 2929 47.91 177.25 0.01 0.03
3 A' 2422 2321 991.49 1.74 0.02 0.04
4 A' 1533 1469 4.36 13.11 0.17 0.29
5 A' 1469 1408 8.25 20.02 0.62 0.77
6 A' 1444 1383 40.03 16.26 0.44 0.61
7 A' 1148 1100 16.05 1.49 0.52 0.68
8 A' 915 877 30.32 7.48 0.20 0.34
9 A' 646 619 27.41 0.45 0.74 0.85
10 A' 177 170 16.47 1.93 0.62 0.76
11 A" 3135 3004 18.56 80.89 0.75 0.86
12 A" 1484 1422 6.49 17.16 0.75 0.86
13 A" 1117 1070 0.03 1.55 0.75 0.86
14 A" 593 569 23.41 0.65 0.75 0.86
15 A" 43 41 1.97 0.78 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 11173.3 cm-1
Scaled (by 0.9583) Zero Point Vibrational Energy (zpe) 10707.4 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/cc-pVDZ
ABC
2.57754 0.14603 0.14195

See section I.F.4 to change rotational constant units
Geometric Data calculated at mPW1PW91/cc-pVDZ

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 1.346 1.085 0.000
N2 0.000 0.594 0.000
C3 -0.561 -0.473 0.000
O4 -1.229 -1.438 0.000
H5 1.328 2.181 0.000
H6 1.895 0.752 0.894
H7 1.895 0.752 -0.894

Atom - Atom Distances (Å)
  C1 N2 C3 O4 H5 H6 H7
C11.43302.46233.60501.09671.10031.1003
N21.43301.20512.37462.06952.10082.1008
C32.46231.20511.17403.25742.88572.8857
O43.60502.37461.17404.43133.91793.9179
H51.09672.06953.25744.43131.77881.7788
H61.10032.10082.88573.91791.77881.7878
H71.10032.10082.88573.91791.77881.7878

picture of methylisocyante state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 N2 C3 137.769 N2 C1 H5 109.065
N2 C1 H6 111.375 N2 C1 H7 111.375
N2 C3 O4 173.055 H5 C1 H6 108.125
H5 C1 H7 108.125 H6 C1 H7 108.669
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at mPW1PW91/cc-pVDZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.029      
2 N -0.306      
3 C 0.269      
4 O -0.190      
5 H 0.068      
6 H 0.065      
7 H 0.065      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  2.383 1.345 0.000 2.737
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -22.039 -0.469 0.000
y -0.469 -24.256 0.000
z 0.000 0.000 -22.205
Traceless
 xyz
x 1.191 -0.469 0.000
y -0.469 -2.134 0.000
z 0.000 0.000 0.943
Polar
3z2-r21.886
x2-y22.217
xy-0.469
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 4.546 1.863 0.000
y 1.863 5.236 0.000
z 0.000 0.000 2.871


<r2> (average value of r2) Å2
<r2> 82.946
(<r2>)1/2 9.107