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All results from a given calculation for CH3NCO (methylisocyante)

using model chemistry: B1B95/6-31G**

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes Cs 1A'
Energy calculated at B1B95/6-31G**
 hartrees
Energy at 0K-207.905438
Energy at 298.15K 
HF Energy-207.905438
Nuclear repulsion energy104.063891
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 B1B95/6-31G**
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' 3177 3033 15.83 84.92 0.66 0.80
2 A' 3077 2938 45.58 155.69 0.01 0.03
3 A' 2452 2341 987.23 2.27 0.08 0.15
4 A' 1556 1486 2.23 11.83 0.17 0.29
5 A' 1518 1449 9.16 26.23 0.62 0.76
6 A' 1486 1419 36.60 26.34 0.47 0.64
7 A' 1171 1118 15.18 2.88 0.65 0.79
8 A' 905 864 31.35 6.99 0.22 0.36
9 A' 624 596 29.78 0.46 0.68 0.81
10 A' 160 153 16.83 1.83 0.66 0.80
11 A" 3148 3006 20.53 75.32 0.75 0.86
12 A" 1534 1465 5.74 22.17 0.75 0.86
13 A" 1143 1091 0.00 2.93 0.75 0.86
14 A" 583 556 27.80 0.70 0.75 0.86
15 A" 47 45 2.94 1.09 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 11290.4 cm-1
Scaled (by 0.9548) Zero Point Vibrational Energy (zpe) 10780.1 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 B1B95/6-31G**
ABC
2.88687 0.14377 0.14059

See section I.F.4 to change rotational constant units
Geometric Data calculated at B1B95/6-31G**

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 1.287 1.178 0.000
N2 0.000 0.562 0.000
C3 -0.533 -0.512 0.000
O4 -1.176 -1.497 0.000
H5 1.165 2.261 0.000
H6 1.859 0.897 0.889
H7 1.859 0.897 -0.889

Atom - Atom Distances (Å)
  C1 N2 C3 O4 H5 H6 H7
C11.42722.48403.63671.08991.09311.0931
N21.42721.19882.37132.06002.08722.0872
C32.48401.19881.17653.25142.91462.9146
O43.63672.37131.17654.42763.96623.9662
H51.08992.06003.25144.42761.76961.7696
H61.09312.08722.91463.96621.76961.7772
H71.09312.08722.91463.96621.76961.7772

picture of methylisocyante state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 N2 C3 141.978 N2 C1 H5 109.118
N2 C1 H6 111.120 N2 C1 H7 111.120
N2 C3 O4 173.284 H5 C1 H6 108.315
H5 C1 H7 108.315 H6 C1 H7 108.769
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B1B95/6-31G** Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.351      
2 N -0.443      
3 C 0.632      
4 O -0.421      
5 H 0.198      
6 H 0.192      
7 H 0.192      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  2.480 1.668 0.000 2.988
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -21.989 -0.449 0.000
y -0.449 -24.293 0.000
z 0.000 0.000 -22.152
Traceless
 xyz
x 1.234 -0.449 0.000
y -0.449 -2.222 0.000
z 0.000 0.000 0.988
Polar
3z2-r21.977
x2-y22.304
xy-0.449
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 4.230 1.858 0.000
y 1.858 5.408 0.000
z 0.000 0.000 2.758


<r2> (average value of r2) Å2
<r2> 83.569
(<r2>)1/2 9.142