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All results from a given calculation for CH3NCO (methylisocyante)

using model chemistry: B3PW91/aug-cc-pVTZ

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/aug-cc-pVTZ
 hartrees
Energy at 0K-207.988451
Energy at 298.15K 
HF Energy-207.988451
Nuclear repulsion energy104.287371
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/aug-cc-pVTZ
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' 3127 3017 12.00 72.18 0.64 0.78
2 A' 3035 2929 45.64 224.23 0.01 0.03
3 A' 2389 2306 1116.73 2.44 0.02 0.05
4 A' 1523 1470 1.26 16.67 0.13 0.24
5 A' 1481 1430 12.37 13.52 0.47 0.64
6 A' 1451 1400 29.58 13.22 0.23 0.37
7 A' 1151 1111 17.42 0.57 0.75 0.86
8 A' 886 855 27.24 8.09 0.11 0.19
9 A' 643 621 28.62 0.59 0.49 0.65
10 A' 168 162 17.37 2.25 0.62 0.76
11 A" 3099 2991 16.29 71.49 0.75 0.86
12 A" 1499 1447 7.51 7.23 0.75 0.86
13 A" 1127 1087 0.02 0.21 0.75 0.86
14 A" 600 579 20.65 0.59 0.75 0.86
15 A" 46 45 1.89 0.71 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 11112.7 cm-1
Scaled (by 0.9651) Zero Point Vibrational Energy (zpe) 10724.9 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/aug-cc-pVTZ
ABC
2.79651 0.14499 0.14152

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3PW91/aug-cc-pVTZ

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 1.310 1.144 0.000
N2 0.000 0.567 0.000
C3 -0.546 -0.496 0.000
O4 -1.193 -1.473 0.000
H5 1.221 2.229 0.000
H6 1.870 0.845 0.888
H7 1.870 0.845 -0.888

Atom - Atom Distances (Å)
  C1 N2 C3 O4 H5 H6 H7
C11.43162.47723.62151.08861.09171.0917
N21.43161.19522.36332.06262.08842.0884
C32.47721.19521.17173.24822.90222.9022
O43.62152.36331.17174.41983.94203.9420
H51.08862.06263.24824.41981.76831.7683
H61.09172.08842.90223.94201.76831.7762
H71.09172.08842.90223.94201.76831.7762

picture of methylisocyante state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 N2 C3 140.981 N2 C1 H5 109.098
N2 C1 H6 111.000 N2 C1 H7 111.000
N2 C3 O4 173.715 H5 C1 H6 108.395
H5 C1 H7 108.395 H6 C1 H7 108.878
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3PW91/aug-cc-pVTZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.376      
2 N 0.057      
3 C -0.114      
4 O -0.344      
5 H 0.264      
6 H 0.257      
7 H 0.257      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  2.461 1.678 0.000 2.979
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -22.596 -0.637 0.000
y -0.637 -24.838 0.000
z 0.000 0.000 -22.549
Traceless
 xyz
x 1.097 -0.637 0.000
y -0.637 -2.266 0.000
z 0.000 0.000 1.169
Polar
3z2-r22.338
x2-y22.242
xy-0.637
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 5.580 1.896 0.000
y 1.896 6.388 0.000
z 0.000 0.000 3.911


<r2> (average value of r2) Å2
<r2> 83.441
(<r2>)1/2 9.135