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All results from a given calculation for CH3NCO (methylisocyante)

using model chemistry: B3PW91/cc-pVDZ

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes Cs 1A'
Energy calculated at B3PW91/cc-pVDZ
 hartrees
Energy at 0K-207.921411
Energy at 298.15K 
HF Energy-207.921411
Nuclear repulsion energy103.810972
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 B3PW91/cc-pVDZ
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
(Å4/u)
Dep P Dep U
1 A' 3145 3035 13.69      
2 A' 3037 2930 49.03      
3 A' 2403 2319 948.42      
4 A' 1518 1465 3.83      
5 A' 1460 1409 8.41      
6 A' 1435 1385 40.17      
7 A' 1141 1101 15.64      
8 A' 906 874 29.73      
9 A' 639 616 25.94      
10 A' 179 173 16.03      
11 A" 3114 3005 19.33      
12 A" 1475 1424 6.31      
13 A" 1110 1071 0.04      
14 A" 585 564 21.89      
15 A" 45 44 1.93      

Unscaled Zero Point Vibrational Energy (zpe) 11095.7 cm-1
Scaled (by 0.965) Zero Point Vibrational Energy (zpe) 10707.4 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 B3PW91/cc-pVDZ
ABC
2.56850 0.14546 0.14139

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3PW91/cc-pVDZ

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 1.349 1.086 0.000
N2 0.000 0.595 0.000
C3 -0.561 -0.474 0.000
O4 -1.232 -1.441 0.000
H5 1.331 2.185 0.000
H6 1.898 0.753 0.895
H7 1.898 0.753 -0.895

Atom - Atom Distances (Å)
  C1 N2 C3 O4 H5 H6 H7
C11.43552.46623.61211.09851.10201.1020
N21.43551.20762.37982.07292.10462.1046
C32.46621.20761.17683.26302.89022.8902
O43.61212.37981.17684.43973.92583.9258
H51.09852.07293.26304.43971.78151.7815
H61.10202.10462.89023.92581.78151.7905
H71.10202.10462.89023.92581.78151.7905

picture of methylisocyante state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 N2 C3 137.672 N2 C1 H5 109.055
N2 C1 H6 111.397 N2 C1 H7 111.397
N2 C3 O4 172.885 H5 C1 H6 108.114
H5 C1 H7 108.114 H6 C1 H7 108.654
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3PW91/cc-pVDZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.023      
2 N -0.292      
3 C 0.253      
4 O -0.184      
5 H 0.068      
6 H 0.066      
7 H 0.066      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  2.378 1.346 0.000 2.732
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -22.034 -0.456 0.000
y -0.456 -24.231 0.000
z 0.000 0.000 -22.209
Traceless
 xyz
x 1.187 -0.456 0.000
y -0.456 -2.110 0.000
z 0.000 0.000 0.923
Polar
3z2-r21.846
x2-y22.198
xy-0.456
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 4.591 1.885 0.000
y 1.885 5.274 0.000
z 0.000 0.000 2.888


<r2> (average value of r2) Å2
<r2> 83.206
(<r2>)1/2 9.122