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All results from a given calculation for CH3NCO (methylisocyante)

using model chemistry: B2PLYP=FULLultrafine/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 B2PLYP=FULLultrafine/6-31+G**
 hartrees
Energy at 0K-207.807744
Energy at 298.15K 
HF Energy-207.594523
Nuclear repulsion energy103.404186
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 B2PLYP=FULLultrafine/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' 3192 3192 12.25 78.76 0.67 0.80
2 A' 3085 3085 51.23 175.37 0.02 0.03
3 A' 2359 2359 987.30 1.19 0.15 0.25
4 A' 1528 1528 3.84 6.52 0.69 0.81
5 A' 1492 1492 24.61 8.65 0.57 0.73
6 A' 1469 1469 24.26 32.90 0.27 0.43
7 A' 1172 1172 19.81 2.26 0.68 0.81
8 A' 877 877 31.99 13.33 0.14 0.24
9 A' 614 614 27.81 0.72 0.64 0.78
10 A' 171 171 18.75 2.64 0.75 0.86
11 A" 3161 3161 18.71 77.16 0.75 0.86
12 A" 1533 1533 6.47 13.80 0.75 0.86
13 A" 1146 1146 0.16 1.37 0.75 0.86
14 A" 571 571 23.97 0.56 0.75 0.86
15 A" 63 63 2.84 1.63 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 11215.5 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 11215.5 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 B2PLYP=FULLultrafine/6-31+G**
ABC
2.66507 0.14323 0.13951

See section I.F.4 to change rotational constant units
Geometric Data calculated at B2PLYP=FULLultrafine/6-31+G**

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 1.341 1.125 0.000
N2 0.000 0.587 0.000
C3 -0.553 -0.488 0.000
O4 -1.222 -1.469 0.000
H5 1.278 2.210 0.000
H6 1.885 0.804 0.890
H7 1.885 0.804 -0.890

Atom - Atom Distances (Å)
  C1 N2 C3 O4 H5 H6 H7
C11.44442.48713.64591.08751.09111.0911
N21.44441.20912.39162.06582.09592.0959
C32.48711.20911.18723.26082.89922.8992
O43.64592.39161.18724.44793.95143.9514
H51.08752.06583.26084.44791.77121.7712
H61.09112.09592.89923.95141.77121.7790
H71.09112.09592.89923.95141.77121.7790

picture of methylisocyante state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 N2 C3 139.041 N2 C1 H5 108.532
N2 C1 H6 110.737 N2 C1 H7 110.737
N2 C3 O4 172.863 H5 C1 H6 108.778
H5 C1 H7 108.778 H6 C1 H7 109.229
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B2PLYP=FULLultrafine/6-31+G** Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.314      
2 N -0.344      
3 C 0.626      
4 O -0.448      
5 H 0.162      
6 H 0.158      
7 H 0.158      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  2.770 1.668 0.000 3.233
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -22.892 -0.555 -0.012
y -0.555 -25.475 -0.006
z -0.012 -0.006 -22.979
Traceless
 xyz
x 1.335 -0.555 -0.012
y -0.555 -2.540 -0.006
z -0.012 -0.006 1.204
Polar
3z2-r22.409
x2-y22.583
xy-0.555
xz-0.012
yz-0.006


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 4.957 2.079 0.001
y 2.079 6.198 0.000
z 0.001 0.000 3.273


<r2> (average value of r2) Å2
<r2> 84.609
(<r2>)1/2 9.198