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All results from a given calculation for CH3NCO (methylisocyante)

using model chemistry: BLYP/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 BLYP/6-31G(2df,p)
 hartrees
Energy at 0K-207.951172
Energy at 298.15K 
HF Energy-207.951172
Nuclear repulsion energy103.101427
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 BLYP/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' 3040 3023 18.12 79.77 0.63 0.78
2 A' 2952 2935 50.06 155.33 0.02 0.04
3 A' 2310 2298 747.98 0.77 0.01 0.02
4 A' 1467 1459 0.20 6.38 0.51 0.68
5 A' 1440 1432 15.55 14.22 0.68 0.81
6 A' 1411 1403 37.45 34.33 0.31 0.47
7 A' 1127 1121 16.07 2.26 0.69 0.82
8 A' 847 843 26.46 7.06 0.19 0.31
9 A' 619 615 20.78 0.60 0.69 0.81
10 A' 180 179 13.61 2.16 0.55 0.71
11 A" 3007 2991 23.68 73.49 0.75 0.86
12 A" 1465 1457 3.69 19.03 0.75 0.86
13 A" 1102 1096 0.00 2.51 0.75 0.86
14 A" 562 559 16.94 0.65 0.75 0.86
15 A" 49 48 1.62 0.68 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 10789.2 cm-1
Scaled (by 0.9945) Zero Point Vibrational Energy (zpe) 10729.9 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 BLYP/6-31G(2df,p)
ABC
2.55199 0.14326 0.13927

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 1.362 1.094 0.000
N2 0.000 0.598 0.000
C3 -0.563 -0.478 0.000
O4 -1.245 -1.449 0.000
H5 1.338 2.193 0.000
H6 1.911 0.760 0.896
H7 1.911 0.760 -0.896

Atom - Atom Distances (Å)
  C1 N2 C3 O4 H5 H6 H7
C11.45002.48523.64231.09911.10251.1025
N21.45001.21382.39582.08212.11672.1167
C32.48521.21381.18723.27802.90732.9073
O43.64232.39581.18724.46523.95503.9550
H51.09912.08213.27804.46521.78441.7844
H61.10252.11672.90733.95501.78441.7921
H71.10252.11672.90733.95501.78441.7921

picture of methylisocyante state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 N2 C3 137.629 N2 C1 H5 108.757
N2 C1 H6 111.329 N2 C1 H7 111.329
N2 C3 O4 172.527 H5 C1 H6 108.299
H5 C1 H7 108.299 H6 C1 H7 108.734
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at BLYP/6-31G(2df,p) Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.300      
2 N -0.332      
3 C 0.506      
4 O -0.274      
5 H 0.136      
6 H 0.132      
7 H 0.132      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  2.279 1.337 0.000 2.642
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -22.158 -0.463 0.000
y -0.463 -24.232 0.000
z 0.000 0.000 -22.280
Traceless
 xyz
x 1.098 -0.463 0.000
y -0.463 -2.014 0.000
z 0.000 0.000 0.915
Polar
3z2-r21.831
x2-y22.075
xy-0.463
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 4.974 1.907 0.000
y 1.907 5.568 0.000
z 0.000 0.000 3.203


<r2> (average value of r2) Å2
<r2> 84.249
(<r2>)1/2 9.179