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All results from a given calculation for CH3NCO (methylisocyante)

using model chemistry: BLYP/TZVP

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/TZVP
 hartrees
Energy at 0K-208.018310
Energy at 298.15K 
HF Energy-208.018310
Nuclear repulsion energy103.118806
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/TZVP
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' 3043 3036 17.00 90.45 0.59 0.74
2 A' 2955 2948 51.00 207.38 0.02 0.04
3 A' 2300 2294 896.90 1.80 0.01 0.02
4 A' 1469 1465 0.52 6.12 0.49 0.65
5 A' 1442 1438 21.39 12.49 0.65 0.79
6 A' 1412 1408 24.53 38.97 0.27 0.43
7 A' 1125 1122 15.68 3.47 0.68 0.81
8 A' 832 830 30.61 7.10 0.17 0.29
9 A' 607 605 24.75 0.70 0.69 0.81
10 A' 176 176 15.68 2.76 0.69 0.82
11 A" 3008 3000 24.60 85.63 0.75 0.86
12 A" 1470 1466 6.19 17.25 0.75 0.86
13 A" 1099 1097 0.01 2.55 0.75 0.86
14 A" 562 560 21.44 0.76 0.75 0.86
15 A" 54 53 2.47 1.59 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 10775.9 cm-1
Scaled (by 0.9975) Zero Point Vibrational Energy (zpe) 10749.0 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/TZVP
ABC
2.71544 0.14188 0.13840

See section I.F.4 to change rotational constant units
Geometric Data calculated at BLYP/TZVP

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 1.334 1.147 0.000
N2 0.000 0.577 0.000
C3 -0.553 -0.497 0.000
O4 -1.216 -1.482 0.000
H5 1.251 2.239 0.000
H6 1.894 0.840 0.894
H7 1.894 0.840 -0.894

Atom - Atom Distances (Å)
  C1 N2 C3 O4 H5 H6 H7
C11.45062.50263.66251.09501.09891.0989
N21.45061.20812.39152.08012.11072.1107
C32.50261.20811.18753.27712.92802.9280
O43.66252.39151.18754.46463.98263.9826
H51.09502.08013.27714.46461.78041.7804
H61.09892.11072.92803.98261.78041.7890
H71.09892.11072.92803.98261.78041.7890

picture of methylisocyante state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 N2 C3 140.368 N2 C1 H5 108.795
N2 C1 H6 111.014 N2 C1 H7 111.014
N2 C3 O4 173.305 H5 C1 H6 108.490
H5 C1 H7 108.490 H6 C1 H7 108.967
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at BLYP/TZVP Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.270      
2 N -0.252      
3 C 0.371      
4 O -0.281      
5 H 0.151      
6 H 0.141      
7 H 0.141      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  2.626 1.656 0.000 3.104
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -22.892 -0.585 0.000
y -0.585 -25.383 0.000
z 0.000 0.000 -22.933
Traceless
 xyz
x 1.266 -0.585 0.000
y -0.585 -2.471 0.000
z 0.000 0.000 1.205
Polar
3z2-r22.409
x2-y22.491
xy-0.585
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 5.067 2.075 0.000
y 2.075 6.204 0.000
z 0.000 0.000 3.359


<r2> (average value of r2) Å2
<r2> 85.205
(<r2>)1/2 9.231