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All results from a given calculation for CH3NCO (methylisocyante)

using model chemistry: B3PW91/Def2TZVPP

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes Cs 1A'
Energy calculated at B3PW91/Def2TZVPP
 hartrees
Energy at 0K-207.994205
Energy at 298.15K 
HF Energy-207.994205
Nuclear repulsion energy104.325387
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 B3PW91/Def2TZVPP
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' 3129 3129 13.24 77.03 0.64 0.78
2 A' 3037 3037 44.88 200.96 0.01 0.03
3 A' 2397 2397 1077.52 2.50 0.01 0.01
4 A' 1526 1526 1.65 14.14 0.14 0.25
5 A' 1482 1482 11.14 16.18 0.55 0.71
6 A' 1454 1454 30.81 14.81 0.29 0.46
7 A' 1152 1152 16.81 1.34 0.68 0.81
8 A' 889 889 27.88 7.56 0.15 0.26
9 A' 645 645 29.11 0.44 0.75 0.86
10 A' 168 168 17.23 2.13 0.66 0.80
11 A" 3102 3102 17.68 72.72 0.75 0.86
12 A" 1499 1499 6.99 11.29 0.75 0.86
13 A" 1128 1128 0.01 0.95 0.75 0.86
14 A" 602 602 22.63 0.54 0.75 0.86
15 A" 41 41 2.03 0.90 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 11125.9 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 11125.9 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 B3PW91/Def2TZVPP
ABC
2.79558 0.14512 0.14164

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3PW91/Def2TZVPP

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 1.309 1.144 0.000
N2 0.000 0.567 0.000
C3 -0.547 -0.495 0.000
O4 -1.192 -1.472 0.000
H5 1.222 2.229 0.000
H6 1.870 0.844 0.888
H7 1.870 0.844 -0.888

Atom - Atom Distances (Å)
  C1 N2 C3 O4 H5 H6 H7
C11.43052.47623.61941.08881.09191.0919
N21.43051.19522.36252.06242.08842.0884
C32.47621.19521.17083.24812.90232.9023
O43.61942.36251.17084.41883.94093.9409
H51.08882.06243.24814.41881.76791.7679
H61.09192.08842.90233.94091.76791.7758
H71.09192.08842.90233.94091.76791.7758

picture of methylisocyante state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 N2 C3 140.976 N2 C1 H5 109.148
N2 C1 H6 111.067 N2 C1 H7 111.067
N2 C3 O4 173.771 H5 C1 H6 108.333
H5 C1 H7 108.333 H6 C1 H7 108.812
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3PW91/Def2TZVPP Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.131      
2 N -0.184      
3 C 0.219      
4 O -0.236      
5 H 0.113      
6 H 0.109      
7 H 0.109      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  2.456 1.646 0.000 2.957
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -22.455 -0.581 0.000
y -0.581 -24.708 0.000
z 0.000 0.000 -22.477
Traceless
 xyz
x 1.137 -0.581 0.000
y -0.581 -2.242 0.000
z 0.000 0.000 1.105
Polar
3z2-r22.210
x2-y22.253
xy-0.581
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 5.116 1.909 0.000
y 1.909 6.038 0.000
z 0.000 0.000 3.502


<r2> (average value of r2) Å2
<r2> 83.319
(<r2>)1/2 9.128