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All results from a given calculation for CH3NCO (methylisocyante)

using model chemistry: B1B95/6-31+G**

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes Cs 1A'
Energy calculated at B1B95/6-31+G**
 hartrees
Energy at 0K-207.916497
Energy at 298.15K 
HF Energy-207.916497
Nuclear repulsion energy103.976980
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 B1B95/6-31+G**
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' 3171 3034 11.91 85.46 0.67 0.80
2 A' 3068 2935 50.28 194.04 0.02 0.03
3 A' 2437 2331 1151.15 2.61 0.01 0.02
4 A' 1548 1481 1.81 19.61 0.16 0.28
5 A' 1495 1430 11.75 18.19 0.57 0.73
6 A' 1465 1402 31.55 17.07 0.50 0.67
7 A' 1158 1107 15.89 1.74 0.67 0.80
8 A' 893 854 32.51 7.94 0.14 0.25
9 A' 617 590 31.90 0.70 0.65 0.79
10 A' 148 141 18.76 2.70 0.74 0.85
11 A" 3143 3007 17.59 84.73 0.75 0.86
12 A" 1510 1444 7.39 14.50 0.75 0.86
13 A" 1132 1083 0.01 1.11 0.75 0.86
14 A" 588 563 28.60 0.65 0.75 0.86
15 A" 50 48 3.40 1.57 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 11210.9 cm-1
Scaled (by 0.9566) Zero Point Vibrational Energy (zpe) 10724.3 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 B1B95/6-31+G**
ABC
3.00459 0.14268 0.13981

See section I.F.4 to change rotational constant units
Geometric Data calculated at B1B95/6-31+G**

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 1.262 1.217 0.000
N2 0.000 0.550 0.000
C3 -0.524 -0.527 0.000
O4 -1.151 -1.524 0.000
H5 1.096 2.293 0.000
H6 1.841 0.956 0.889
H7 1.841 0.956 -0.889

Atom - Atom Distances (Å)
  C1 N2 C3 O4 H5 H6 H7
C11.42782.49613.65201.08891.09221.0922
N21.42781.19712.37172.05922.08462.0846
C32.49611.19711.17813.25192.92972.9297
O43.65202.37171.17814.42933.98713.9871
H51.08892.05923.25194.42931.76961.7696
H61.09222.08462.92973.98711.76961.7775
H71.09222.08462.92973.98711.76961.7775

picture of methylisocyante state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 N2 C3 143.807 N2 C1 H5 109.074
N2 C1 H6 110.930 N2 C1 H7 110.930
N2 C3 O4 173.774 H5 C1 H6 108.458
H5 C1 H7 108.458 H6 C1 H7 108.923
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B1B95/6-31+G** Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.377      
2 N -0.323      
3 C 0.645      
4 O -0.464      
5 H 0.175      
6 H 0.172      
7 H 0.172      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  2.646 1.939 0.000 3.281
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -22.616 -0.563 0.000
y -0.563 -25.053 0.000
z 0.000 0.000 -22.622
Traceless
 xyz
x 1.221 -0.563 0.000
y -0.563 -2.434 0.000
z 0.000 0.000 1.213
Polar
3z2-r22.426
x2-y22.437
xy-0.563
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 4.721 2.007 0.000
y 2.007 6.203 0.000
z 0.000 0.000 3.214


<r2> (average value of r2) Å2
<r2> 84.334
(<r2>)1/2 9.183