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All results from a given calculation for CH3NCO (methylisocyante)

using model chemistry: mPW1PW91/6-31G(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 mPW1PW91/6-31G(2df,p)
 hartrees
Energy at 0K-207.950684
Energy at 298.15K 
HF Energy-207.950684
Nuclear repulsion energy104.333666
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 mPW1PW91/6-31G(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' 3155 3012 13.46 76.70 0.67 0.81
2 A' 3056 2918 43.59 150.44 0.01 0.02
3 A' 2437 2327 985.83 1.59 0.06 0.11
4 A' 1547 1477 3.43 13.55 0.16 0.27
5 A' 1492 1425 8.62 19.31 0.65 0.79
6 A' 1464 1398 34.76 17.82 0.42 0.59
7 A' 1161 1108 16.35 1.68 0.67 0.80
8 A' 905 864 27.53 7.24 0.18 0.30
9 A' 657 627 28.97 0.44 0.72 0.83
10 A' 167 159 16.54 1.74 0.59 0.74
11 A" 3129 2987 17.36 69.37 0.75 0.86
12 A" 1507 1439 5.66 16.93 0.75 0.86
13 A" 1138 1086 0.00 1.79 0.75 0.86
14 A" 615 587 24.68 0.68 0.75 0.86
15 A" 34 33 2.07 0.69 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 11231.6 cm-1
Scaled (by 0.9547) Zero Point Vibrational Energy (zpe) 10722.8 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 mPW1PW91/6-31G(2df,p)
ABC
2.77565 0.14535 0.14182

See section I.F.4 to change rotational constant units
Geometric Data calculated at mPW1PW91/6-31G(2df,p)

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 1.310 1.138 0.000
N2 0.000 0.570 0.000
C3 -0.547 -0.494 0.000
O4 -1.194 -1.470 0.000
H5 1.228 2.226 0.000
H6 1.872 0.837 0.888
H7 1.872 0.837 -0.888

Atom - Atom Distances (Å)
  C1 N2 C3 O4 H5 H6 H7
C11.42772.47233.61531.09071.09371.0937
N21.42771.19692.36372.06132.08962.0896
C32.47231.19691.17063.24802.90082.9008
O43.61532.36371.17064.41863.93893.9389
H51.09072.06133.24804.41861.76971.7697
H61.09372.08962.90083.93891.76971.7770
H71.09372.08962.90083.93891.76971.7770

picture of methylisocyante state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 N2 C3 140.615 N2 C1 H5 109.136
N2 C1 H6 111.250 N2 C1 H7 111.250
N2 C3 O4 173.609 H5 C1 H6 108.226
H5 C1 H7 108.226 H6 C1 H7 108.658
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at mPW1PW91/6-31G(2df,p) Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.369      
2 N -0.397      
3 C 0.581      
4 O -0.329      
5 H 0.174      
6 H 0.170      
7 H 0.170      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  2.345 1.524 0.000 2.796
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -21.944 -0.462 0.000
y -0.462 -24.084 0.000
z 0.000 0.000 -22.077
Traceless
 xyz
x 1.136 -0.462 0.000
y -0.462 -2.074 0.000
z 0.000 0.000 0.938
Polar
3z2-r21.875
x2-y22.140
xy-0.462
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 4.660 1.782 0.000
y 1.782 5.483 0.000
z 0.000 0.000 3.140


<r2> (average value of r2) Å2
<r2> 82.925
(<r2>)1/2 9.106