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All results from a given calculation for CH3NCO (methylisocyante)

using model chemistry: B2PLYP/3-21G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes Cs 1A'
Energy calculated at B2PLYP/3-21G*
 hartrees
Energy at 0K-206.571948
Energy at 298.15K 
HF Energy-206.423935
Nuclear repulsion energy102.548085
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 B2PLYP/3-21G*
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' 3169 3169 15.11 81.98 0.62 0.77
2 A' 3075 3075 36.98 135.08 0.02 0.03
3 A' 2373 2373 610.68 2.40 0.17 0.30
4 A' 1583 1583 7.78 23.79 0.75 0.86
5 A' 1523 1523 28.64 19.61 0.58 0.74
6 A' 1433 1433 16.73 30.11 0.29 0.45
7 A' 1183 1183 11.72 3.51 0.68 0.81
8 A' 822 822 34.27 9.08 0.24 0.39
9 A' 578 578 20.14 0.63 0.29 0.45
10 A' 167 167 15.46 1.45 0.74 0.85
11 A" 3133 3133 20.66 67.56 0.75 0.86
12 A" 1594 1594 7.91 28.00 0.75 0.86
13 A" 1165 1165 0.04 3.16 0.75 0.86
14 A" 535 535 20.82 0.53 0.75 0.86
15 A" 60 60 4.35 1.42 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 11195.9 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 11195.9 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 B2PLYP/3-21G*
ABC
3.01980 0.13816 0.13551

See section I.F.4 to change rotational constant units
Geometric Data calculated at B2PLYP/3-21G*

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 1.277 1.248 0.000
N2 0.000 0.549 0.000
C3 -0.520 -0.536 0.000
O4 -1.168 -1.553 0.000
H5 1.086 2.321 0.000
H6 1.857 0.993 0.890
H7 1.857 0.993 -0.890

Atom - Atom Distances (Å)
  C1 N2 C3 O4 H5 H6 H7
C11.45552.53243.71771.08941.09331.0933
N21.45551.20372.40452.07852.10702.1070
C32.53241.20371.20523.27812.96372.9637
O43.71772.40451.20524.48204.05274.0527
H51.08942.07853.27814.48201.77521.7752
H61.09332.10702.96374.05271.77521.7806
H71.09332.10702.96374.05271.77521.7806

picture of methylisocyante state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 N2 C3 144.308 N2 C1 H5 108.664
N2 C1 H6 110.711 N2 C1 H7 110.711
N2 C3 O4 173.085 H5 C1 H6 108.838
H5 C1 H7 108.838 H6 C1 H7 109.035
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B2PLYP/3-21G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.373      
2 N -0.598      
3 C 0.750      
4 O -0.455      
5 H 0.233      
6 H 0.222      
7 H 0.222      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  2.705 1.951 0.000 3.335
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -22.071 -0.338 -0.013
y -0.338 -24.805 -0.007
z -0.013 -0.007 -22.459
Traceless
 xyz
x 1.561 -0.338 -0.013
y -0.338 -2.540 -0.007
z -0.013 -0.007 0.979
Polar
3z2-r21.958
x2-y22.733
xy-0.338
xz-0.013
yz-0.007


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 3.689 1.921 0.001
y 1.921 5.235 0.000
z 0.001 0.000 2.299


<r2> (average value of r2) Å2
<r2> 86.246
(<r2>)1/2 9.287