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All results from a given calculation for CH3NCO (methylisocyante)

using model chemistry: wB97X-D/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 wB97X-D/6-31G*
 hartrees
Energy at 0K-207.915704
Energy at 298.15K 
HF Energy-207.915704
Nuclear repulsion energy103.926881
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 wB97X-D/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' 3174 3011 16.46 83.62 0.67 0.80
2 A' 3071 2913 44.62 146.46 0.01 0.02
3 A' 2436 2310 1013.91 1.72 0.07 0.12
4 A' 1552 1472 2.30 8.55 0.21 0.34
5 A' 1521 1443 9.82 26.04 0.58 0.73
6 A' 1496 1419 35.41 23.37 0.46 0.63
7 A' 1178 1117 15.63 3.19 0.66 0.79
8 A' 908 861 31.67 7.89 0.21 0.35
9 A' 632 599 31.37 0.45 0.67 0.80
10 A' 165 157 17.18 1.65 0.67 0.80
11 A" 3145 2983 21.55 72.45 0.75 0.86
12 A" 1542 1462 6.33 22.13 0.75 0.86
13 A" 1150 1091 0.01 2.96 0.75 0.86
14 A" 586 556 29.90 0.73 0.75 0.86
15 A" 58 55 2.84 1.08 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 11305.8 cm-1
Scaled (by 0.9485) Zero Point Vibrational Energy (zpe) 10723.6 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 wB97X-D/6-31G*
ABC
2.72735 0.14441 0.14082

See section I.F.4 to change rotational constant units
Geometric Data calculated at wB97X-D/6-31G*

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 1.324 1.133 0.000
N2 0.000 0.576 0.000
C3 -0.550 -0.492 0.000
O4 -1.206 -1.468 0.000
H5 1.249 2.222 0.000
H6 1.879 0.823 0.891
H7 1.879 0.823 -0.891

Atom - Atom Distances (Å)
  C1 N2 C3 O4 H5 H6 H7
C11.43592.47993.62881.09141.09471.0947
N21.43591.20152.37412.06562.09412.0941
C32.47991.20151.17673.25562.90182.9018
O43.62882.37411.17674.43233.94493.9449
H51.09142.06563.25564.43231.77421.7742
H61.09472.09412.90183.94491.77421.7818
H71.09472.09412.90183.94491.77421.7818

picture of methylisocyante state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 N2 C3 140.025 N2 C1 H5 108.876
N2 C1 H6 110.968 N2 C1 H7 110.968
N2 C3 O4 173.291 H5 C1 H6 108.507
H5 C1 H7 108.507 H6 C1 H7 108.947
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at wB97X-D/6-31G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.360      
2 N -0.452      
3 C 0.649      
4 O -0.430      
5 H 0.203      
6 H 0.195      
7 H 0.195      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  2.560 1.553 0.000 2.994
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -21.985 -0.477 0.000
y -0.477 -24.446 0.000
z 0.000 0.000 -22.187
Traceless
 xyz
x 1.331 -0.477 0.000
y -0.477 -2.360 0.000
z 0.000 0.000 1.029
Polar
3z2-r22.057
x2-y22.461
xy-0.477
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 4.268 1.833 0.000
y 1.833 5.322 0.000
z 0.000 0.000 2.773


<r2> (average value of r2) Å2
<r2> 83.480
(<r2>)1/2 9.137