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All results from a given calculation for CH3NCO (methylisocyante)

using model chemistry: B2PLYP/Def2TZVPP

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/Def2TZVPP
 hartrees
Energy at 0K-207.919994
Energy at 298.15K 
HF Energy-207.672294
Nuclear repulsion energy104.037219
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/Def2TZVPP
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' 3159 3159 12.97 73.11 0.64 0.78
2 A' 3064 3064 44.75 187.39 0.01 0.02
3 A' 2352 2352 975.98 1.25 0.02 0.04
4 A' 1518 1518 2.75 5.03 0.54 0.70
5 A' 1485 1485 17.79 9.12 0.52 0.68
6 A' 1461 1461 30.28 26.37 0.22 0.37
7 A' 1166 1166 18.89 1.61 0.68 0.81
8 A' 879 879 28.48 11.72 0.15 0.27
9 A' 643 643 27.52 0.43 0.75 0.86
10 A' 178 178 17.49 1.95 0.68 0.81
11 A" 3130 3130 17.56 66.85 0.75 0.86
12 A" 1522 1522 6.41 10.87 0.75 0.86
13 A" 1142 1142 0.11 1.10 0.75 0.86
14 A" 593 593 20.37 0.53 0.75 0.86
15 A" 47 47 1.85 0.96 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 11169.4 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 11169.4 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/Def2TZVPP
ABC
2.60358 0.14565 0.14160

See section I.F.4 to change rotational constant units
Geometric Data calculated at B2PLYP/Def2TZVPP

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 1.353 1.088 0.000
N2 0.000 0.590 0.000
C3 -0.563 -0.471 0.000
O4 -1.230 -1.440 0.000
H5 1.325 2.173 0.000
H6 1.888 0.754 0.887
H7 1.888 0.754 -0.887

Atom - Atom Distances (Å)
  C1 N2 C3 O4 H5 H6 H7
C11.44142.47033.61401.08521.08841.0884
N21.44141.20172.37342.06452.09272.0927
C32.47031.20171.17573.24952.88062.8806
O43.61402.37341.17574.42513.91463.9146
H51.08522.06453.24954.42511.76541.7654
H61.08842.09272.88063.91461.76541.7731
H71.08842.09272.88063.91461.76541.7731

picture of methylisocyante state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 N2 C3 138.148 N2 C1 H5 108.768
N2 C1 H6 110.848 N2 C1 H7 110.848
N2 C3 O4 173.356 H5 C1 H6 108.622
H5 C1 H7 108.622 H6 C1 H7 109.075
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B2PLYP/Def2TZVPP Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.126      
2 N -0.240      
3 C 0.279      
4 O -0.250      
5 H 0.117      
6 H 0.110      
7 H 0.110      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  2.528 1.511 0.000 2.945
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -22.690 -0.560 -0.013
y -0.560 -25.027 -0.007
z -0.013 -0.007 -22.774
Traceless
 xyz
x 1.210 -0.560 -0.013
y -0.560 -2.295 -0.007
z -0.013 -0.007 1.085
Polar
3z2-r22.170
x2-y22.337
xy-0.560
xz-0.013
yz-0.007


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 5.209 1.943 0.002
y 1.943 6.027 0.000
z 0.002 0.000 3.508


<r2> (average value of r2) Å2
<r2> 83.440
(<r2>)1/2 9.135