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All results from a given calculation for CH3NCO (methylisocyante)

using model chemistry: B1B95/6-311G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes Cs 1A'
Energy calculated at B1B95/6-311G*
 hartrees
Energy at 0K-207.958890
Energy at 298.15K 
HF Energy-207.958890
Nuclear repulsion energy104.482861
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 B1B95/6-311G*
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 3029 20.21 85.81 0.66 0.79
2 A' 3062 2935 50.49 166.40 0.02 0.03
3 A' 2442 2341 1074.51 2.41 0.04 0.07
4 A' 1549 1485 2.55 11.76 0.14 0.25
5 A' 1509 1446 11.96 20.58 0.62 0.77
6 A' 1477 1416 31.47 21.66 0.45 0.63
7 A' 1166 1118 14.92 2.45 0.61 0.76
8 A' 903 866 32.52 7.26 0.21 0.35
9 A' 646 619 31.08 0.38 0.66 0.79
10 A' 163 157 17.54 1.75 0.68 0.81
11 A" 3129 3000 26.87 79.20 0.75 0.86
12 A" 1528 1464 7.28 16.10 0.75 0.86
13 A" 1142 1094 0.00 2.07 0.75 0.86
14 A" 606 581 28.20 0.66 0.75 0.86
15 A" 53 50 2.67 1.07 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 11266.8 cm-1
Scaled (by 0.9586) Zero Point Vibrational Energy (zpe) 10800.3 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 B1B95/6-311G*
ABC
2.81564 0.14544 0.14199

See section I.F.4 to change rotational constant units
Geometric Data calculated at B1B95/6-311G*

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 1.305 1.146 0.000
N2 0.000 0.565 0.000
C3 -0.546 -0.497 0.000
O4 -1.188 -1.472 0.000
H5 1.213 2.229 0.000
H6 1.867 0.850 0.887
H7 1.867 0.850 -0.887

Atom - Atom Distances (Å)
  C1 N2 C3 O4 H5 H6 H7
C11.42882.47483.61521.08731.09071.0907
N21.42881.19362.35812.05972.08652.0865
C32.47481.19361.16783.24422.90202.9020
O43.61522.35811.16784.41203.93823.9382
H51.08732.05973.24424.41201.76551.7655
H61.09072.08652.90203.93821.76551.7735
H71.09072.08652.90203.93821.76551.7735

picture of methylisocyante state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 N2 C3 141.213 N2 C1 H5 109.142
N2 C1 H6 111.108 N2 C1 H7 111.108
N2 C3 O4 173.879 H5 C1 H6 108.310
H5 C1 H7 108.310 H6 C1 H7 108.778
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B1B95/6-311G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.536      
2 N -0.387      
3 C 0.500      
4 O -0.297      
5 H 0.245      
6 H 0.237      
7 H 0.237      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  2.504 1.603 0.000 2.974
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -22.205 -0.514 0.000
y -0.514 -24.577 0.000
z 0.000 0.000 -22.327
Traceless
 xyz
x 1.247 -0.514 0.000
y -0.514 -2.311 0.000
z 0.000 0.000 1.064
Polar
3z2-r22.128
x2-y22.372
xy-0.514
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 4.412 1.847 0.000
y 1.847 5.444 0.000
z 0.000 0.000 2.905


<r2> (average value of r2) Å2
<r2> 83.046
(<r2>)1/2 9.113