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All results from a given calculation for CH3NCO (methylisocyante)

using model chemistry: TPSSh/6-31G**

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes Cs 1A'
Energy calculated at TPSSh/6-31G**
 hartrees
Energy at 0K-207.998431
Energy at 298.15K 
HF Energy-207.998431
Nuclear repulsion energy103.468814
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 TPSSh/6-31G**
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' 3145 3015 20.11 87.03 0.65 0.79
2 A' 3045 2919 50.24 163.96 0.01 0.03
3 A' 2376 2278 856.91 1.15 0.03 0.05
4 A' 1527 1464 1.85 11.28 0.70 0.82
5 A' 1493 1431 12.65 12.40 0.60 0.75
6 A' 1466 1406 40.76 35.03 0.34 0.50
7 A' 1163 1115 18.01 3.46 0.64 0.78
8 A' 879 843 31.70 7.82 0.20 0.34
9 A' 617 592 24.81 0.55 0.70 0.82
10 A' 178 171 15.84 1.94 0.64 0.78
11 A" 3113 2985 27.04 77.99 0.75 0.86
12 A" 1531 1468 4.05 21.84 0.75 0.86
13 A" 1132 1085 0.02 3.49 0.75 0.86
14 A" 561 538 22.60 0.66 0.75 0.86
15 A" 54 52 2.60 1.01 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 11140.1 cm-1
Scaled (by 0.9587) Zero Point Vibrational Energy (zpe) 10680.0 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 TPSSh/6-31G**
ABC
2.63361 0.14377 0.13995

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 1.346 1.111 0.000
N2 0.000 0.590 0.000
C3 -0.552 -0.486 0.000
O4 -1.231 -1.457 0.000
H5 1.298 2.201 0.000
H6 1.892 0.786 0.891
H7 1.892 0.786 -0.891

Atom - Atom Distances (Å)
  C1 N2 C3 O4 H5 H6 H7
C11.44342.48063.63771.09111.09461.0946
N21.44341.20972.38872.06792.10092.1009
C32.48061.20971.18453.26172.89612.8961
O43.63772.38871.18454.44623.94683.9468
H51.09112.06793.26174.44621.77491.7749
H61.09462.10092.89613.94681.77491.7828
H71.09462.10092.89613.94681.77491.7828

picture of methylisocyante state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 N2 C3 138.286 N2 C1 H5 108.556
N2 C1 H6 110.994 N2 C1 H7 110.994
N2 C3 O4 172.217 H5 C1 H6 108.592
H5 C1 H7 108.592 H6 C1 H7 109.047
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at TPSSh/6-31G** Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.216      
2 N -0.471      
3 C 0.644      
4 O -0.417      
5 H 0.158      
6 H 0.151      
7 H 0.151      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  2.524 1.444 0.000 2.908
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 4.493 1.917 0.000
y 1.917 5.396 0.000
z 0.000 0.000 2.828


<r2> (average value of r2) Å2
<r2> 83.832
(<r2>)1/2 9.156