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All results from a given calculation for CH3NCO (methylisocyante)

using model chemistry: BLYP/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 BLYP/6-31G*
 hartrees
Energy at 0K-207.934025
Energy at 298.15K 
HF Energy-207.934025
Nuclear repulsion energy102.691526
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 BLYP/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' 3055 3030 21.32 86.88 0.62 0.77
2 A' 2964 2940 53.30 159.19 0.02 0.05
3 A' 2305 2286 723.80 1.04 0.02 0.03
4 A' 1489 1477 2.02 13.97 0.74 0.85
5 A' 1454 1442 25.41 13.19 0.73 0.85
6 A' 1422 1410 28.66 39.64 0.30 0.46
7 A' 1137 1128 15.25 3.79 0.67 0.80
8 A' 848 842 28.67 7.03 0.21 0.35
9 A' 589 584 20.33 0.65 0.73 0.84
10 A' 180 179 14.00 2.27 0.61 0.76
11 A" 3019 2994 28.40 79.27 0.75 0.86
12 A" 1494 1482 4.05 23.96 0.75 0.86
13 A" 1107 1098 0.02 4.00 0.75 0.86
14 A" 527 523 17.51 0.63 0.75 0.86
15 A" 54 53 2.14 1.00 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 10821.6 cm-1
Scaled (by 0.9919) Zero Point Vibrational Energy (zpe) 10733.9 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 BLYP/6-31G*
ABC
2.56826 0.14192 0.13806

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 1.361 1.108 0.000
N2 0.000 0.599 0.000
C3 -0.556 -0.486 0.000
O4 -1.248 -1.460 0.000
H5 1.327 2.207 0.000
H6 1.912 0.777 0.897
H7 1.912 0.777 -0.897

Atom - Atom Distances (Å)
  C1 N2 C3 O4 H5 H6 H7
C11.45282.49303.66041.10011.10391.1039
N21.45281.21942.40792.08502.11982.1198
C32.49301.21941.19473.28652.91452.9145
O43.66042.40791.19474.48113.97443.9744
H51.10012.08503.28654.48111.78681.7868
H61.10392.11982.91453.97441.78681.7947
H71.10392.11982.91453.97441.78681.7947

picture of methylisocyante state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 N2 C3 137.626 N2 C1 H5 108.732
N2 C1 H6 111.290 N2 C1 H7 111.290
N2 C3 O4 171.776 H5 C1 H6 108.335
H5 C1 H7 108.335 H6 C1 H7 108.770
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at BLYP/6-31G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.289      
2 N -0.380      
3 C 0.562      
4 O -0.386      
5 H 0.167      
6 H 0.163      
7 H 0.163      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  2.417 1.394 0.000 2.790
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -22.105 -0.413 0.000
y -0.413 -24.365 0.000
z 0.000 0.000 -22.342
Traceless
 xyz
x 1.249 -0.413 0.000
y -0.413 -2.142 0.000
z 0.000 0.000 0.893
Polar
3z2-r21.786
x2-y22.260
xy-0.413
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 4.615 1.993 0.000
y 1.993 5.444 0.000
z 0.000 0.000 2.827


<r2> (average value of r2) Å2
<r2> 84.864
(<r2>)1/2 9.212