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All results from a given calculation for CH3NCO (methylisocyante)

using model chemistry: B3PW91/6-31G(2df,p)

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes Cs 1A'
Energy calculated at B3PW91/6-31G(2df,p)
 hartrees
Energy at 0K-207.924842
Energy at 298.15K 
HF Energy-207.924842
Nuclear repulsion energy104.140537
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 B3PW91/6-31G(2df,p)
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' 3134 3013 14.24 78.11 0.67 0.80
2 A' 3037 2920 44.92 153.24 0.01 0.03
3 A' 2420 2327 945.59 1.57 0.05 0.10
4 A' 1533 1474 2.99 12.87 0.15 0.27
5 A' 1483 1426 8.78 20.06 0.64 0.78
6 A' 1456 1399 35.07 19.69 0.41 0.58
7 A' 1154 1110 15.96 1.73 0.67 0.80
8 A' 896 862 27.16 7.07 0.18 0.31
9 A' 650 625 27.54 0.46 0.72 0.84
10 A' 169 163 16.08 1.81 0.58 0.73
11 A" 3108 2988 18.37 70.91 0.75 0.86
12 A" 1498 1440 5.44 17.43 0.75 0.86
13 A" 1131 1087 0.00 1.87 0.75 0.86
14 A" 606 583 23.39 0.68 0.75 0.86
15 A" 37 35 2.04 0.70 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 11156.3 cm-1
Scaled (by 0.9614) Zero Point Vibrational Energy (zpe) 10725.7 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 B3PW91/6-31G(2df,p)
ABC
2.76581 0.14483 0.14131

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3PW91/6-31G(2df,p)

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 1.312 1.140 0.000
N2 0.000 0.572 0.000
C3 -0.547 -0.495 0.000
O4 -1.197 -1.472 0.000
H5 1.231 2.229 0.000
H6 1.876 0.838 0.890
H7 1.876 0.838 -0.890

Atom - Atom Distances (Å)
  C1 N2 C3 O4 H5 H6 H7
C11.42992.47583.62181.09241.09541.0954
N21.42991.19922.36862.06442.09322.0932
C32.47581.19921.17333.25322.90522.9052
O43.62182.36861.17334.42653.94623.9462
H51.09242.06443.25324.42651.77221.7722
H61.09542.09322.90523.94621.77221.7795
H71.09542.09322.90523.94621.77221.7795

picture of methylisocyante state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 N2 C3 140.520 N2 C1 H5 109.134
N2 C1 H6 111.284 N2 C1 H7 111.284
N2 C3 O4 173.469 H5 C1 H6 108.203
H5 C1 H7 108.203 H6 C1 H7 108.634
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3PW91/6-31G(2df,p) Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.368      
2 N -0.392      
3 C 0.579      
4 O -0.325      
5 H 0.172      
6 H 0.167      
7 H 0.167      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  2.337 1.520 0.000 2.788
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -21.956 -0.457 0.000
y -0.457 -24.080 0.000
z 0.000 0.000 -22.087
Traceless
 xyz
x 1.127 -0.457 0.000
y -0.457 -2.058 0.000
z 0.000 0.000 0.931
Polar
3z2-r21.862
x2-y22.124
xy-0.457
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 4.702 1.805 0.000
y 1.805 5.523 0.000
z 0.000 0.000 3.156


<r2> (average value of r2) Å2
<r2> 83.174
(<r2>)1/2 9.120