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All results from a given calculation for CH3NCO (methylisocyante)

using model chemistry: B2PLYP=FULLultrafine/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=FULLultrafine/3-21G*
 hartrees
Energy at 0K-206.574000
Energy at 298.15K 
HF Energy-206.423950
Nuclear repulsion energy102.551945
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=FULLultrafine/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 15.10 82.02 0.62 0.77
2 A' 3075 3075 36.98 135.19 0.02 0.03
3 A' 2373 2373 611.09 2.42 0.17 0.30
4 A' 1583 1583 7.78 23.80 0.75 0.86
5 A' 1523 1523 28.63 19.62 0.58 0.74
6 A' 1433 1433 16.66 30.21 0.29 0.45
7 A' 1183 1183 11.68 3.50 0.68 0.81
8 A' 822 822 34.29 9.05 0.24 0.39
9 A' 578 578 20.14 0.63 0.29 0.45
10 A' 167 167 15.45 1.46 0.74 0.85
11 A" 3133 3133 20.64 67.60 0.75 0.86
12 A" 1594 1594 7.92 28.00 0.75 0.86
13 A" 1165 1165 0.04 3.15 0.75 0.86
14 A" 535 535 20.83 0.53 0.75 0.86
15 A" 60 60 4.37 1.42 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 11196.3 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 11196.3 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=FULLultrafine/3-21G*
ABC
3.02592 0.13814 0.13550

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 1.275 1.250 0.000
N2 0.000 0.549 0.000
C3 -0.519 -0.537 0.000
O4 -1.166 -1.554 0.000
H5 1.083 2.322 0.000
H6 1.856 0.996 0.890
H7 1.856 0.996 -0.890

Atom - Atom Distances (Å)
  C1 N2 C3 O4 H5 H6 H7
C11.45532.53273.71801.08931.09331.0933
N21.45531.20362.40442.07842.10682.1068
C32.53271.20361.20523.27802.96422.9642
O43.71802.40441.20524.48184.05344.0534
H51.08932.07843.27804.48181.77511.7751
H61.09332.10682.96424.05341.77511.7805
H71.09332.10682.96424.05341.77511.7805

picture of methylisocyante state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 N2 C3 144.386 N2 C1 H5 108.672
N2 C1 H6 110.713 N2 C1 H7 110.713
N2 C3 O4 173.096 H5 C1 H6 108.834
H5 C1 H7 108.834 H6 C1 H7 109.031
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B2PLYP=FULLultrafine/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
  2.703 1.956 0.000 3.336
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -22.073 -0.337 -0.013
y -0.337 -24.802 -0.007
z -0.013 -0.007 -22.458
Traceless
 xyz
x 1.557 -0.337 -0.013
y -0.337 -2.537 -0.007
z -0.013 -0.007 0.979
Polar
3z2-r21.959
x2-y22.729
xy-0.337
xz-0.013
yz-0.007


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 3.685 1.920 0.001
y 1.920 5.238 0.000
z 0.001 0.000 2.299


<r2> (average value of r2) Å2
<r2> 86.252
(<r2>)1/2 9.287