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All results from a given calculation for CH3NCO (methylisocyante)

using model chemistry: HF/daug-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 HF/daug-cc-pVTZ
 hartrees
Energy at 0K-206.873698
Energy at 298.15K 
HF Energy-206.873698
Nuclear repulsion energy105.431459
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 HF/daug-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' 3273 2961 20.67 64.88 0.62 0.77
2 A' 3184 2880 47.35 184.56 0.01 0.02
3 A' 2482 2245 1771.55 3.29 0.01 0.02
4 A' 1637 1481 0.82 6.72 0.08 0.16
5 A' 1605 1452 13.48 10.40 0.46 0.63
6 A' 1575 1425 52.95 7.94 0.16 0.27
7 A' 1251 1132 30.15 0.64 0.72 0.84
8 A' 925 837 45.60 10.60 0.11 0.21
9 A' 739 668 53.85 0.52 0.35 0.51
10 A' 147 133 24.06 1.05 0.70 0.82
11 A" 3246 2936 25.78 58.86 0.75 0.86
12 A" 1628 1472 6.65 5.93 0.75 0.86
13 A" 1230 1112 1.02 0.27 0.75 0.86
14 A" 706 638 42.55 0.80 0.75 0.86
15 A" 26i 23i 2.26 0.58 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 11800.3 cm-1
Scaled (by 0.9046) Zero Point Vibrational Energy (zpe) 10674.6 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 HF/daug-cc-pVTZ
ABC
2.70628 0.14879 0.14484

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 1.343 1.085 0.000
N2 0.000 0.565 0.000
C3 -0.571 -0.465 0.000
O4 -1.210 -1.420 0.000
H5 1.296 2.162 0.000
H6 1.877 0.759 0.882
H7 1.877 0.759 -0.882

Atom - Atom Distances (Å)
  C1 N2 C3 O4 H5 H6 H7
C11.44022.46283.57661.07791.08111.0811
N21.44021.17732.32412.05682.08282.0828
C32.46281.17731.14893.22262.87532.8753
O43.57662.32411.14894.37123.88003.8800
H51.07792.05683.22264.37121.75591.7559
H61.08112.08282.87533.88001.75591.7635
H71.08112.08282.87533.88001.75591.7635

picture of methylisocyante state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 N2 C3 140.197 N2 C1 H5 108.679
N2 C1 H6 110.581 N2 C1 H7 110.581
N2 C3 O4 175.195 H5 C1 H6 108.833
H5 C1 H7 108.833 H6 C1 H7 109.293
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HF/daug-cc-pVTZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -1.116      
2 N -0.290      
3 C 0.089      
4 O -0.892      
5 H 0.705      
6 H 0.752      
7 H 0.752      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  2.692 1.630 0.000 3.147
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -22.782 -0.865 0.000
y -0.865 -25.374 0.000
z 0.000 0.000 -22.615
Traceless
 xyz
x 1.212 -0.865 0.000
y -0.865 -2.675 0.000
z 0.000 0.000 1.463
Polar
3z2-r22.927
x2-y22.591
xy-0.865
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 5.118 1.606 0.000
y 1.606 5.721 0.000
z 0.000 0.000 3.672


<r2> (average value of r2) Å2
<r2> 82.048
(<r2>)1/2 9.058