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All results from a given calculation for CH3NCO (methylisocyante)

using model chemistry: HF/cc-pVQZ

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes Cs 1A'
Energy calculated at HF/cc-pVQZ
 hartrees
Energy at 0K-206.885925
Energy at 298.15K 
HF Energy-206.885925
Nuclear repulsion energy105.534770
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 HF/cc-pVQZ
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' 3272 2973 21.98 68.80 0.62 0.77
2 A' 3184 2892 46.96 173.93 0.01 0.02
3 A' 2486 2259 1739.18 3.22 0.01 0.02
4 A' 1639 1489 0.99 5.47 0.10 0.19
5 A' 1606 1459 12.65 11.16 0.52 0.68
6 A' 1577 1433 54.47 8.54 0.18 0.31
7 A' 1252 1137 29.57 0.99 0.67 0.80
8 A' 927 842 45.82 10.08 0.14 0.25
9 A' 740 672 54.52 0.34 0.59 0.74
10 A' 149 135 23.77 1.00 0.72 0.84
11 A" 3245 2948 27.34 61.81 0.75 0.86
12 A" 1629 1479 6.28 7.45 0.75 0.86
13 A" 1231 1118 0.96 0.50 0.75 0.86
14 A" 706 642 44.12 0.72 0.75 0.86
15 A" 26i 24i 2.30 0.60 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 11808.9 cm-1
Scaled (by 0.9084) Zero Point Vibrational Energy (zpe) 10727.2 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 HF/cc-pVQZ
ABC
2.70509 0.14913 0.14515

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 1.343 1.082 0.000
N2 0.000 0.565 0.000
C3 -0.571 -0.464 0.000
O4 -1.210 -1.416 0.000
H5 1.299 2.159 0.000
H6 1.877 0.756 0.881
H7 1.877 0.756 -0.881

Atom - Atom Distances (Å)
  C1 N2 C3 O4 H5 H6 H7
C11.43912.46043.57221.07751.08071.0807
N21.43911.17642.32142.05612.08212.0821
C32.46041.17641.14703.22092.87342.8734
O43.57222.32141.14704.36763.87613.8761
H51.07752.05613.22094.36761.75471.7547
H61.08072.08212.87343.87611.75471.7623
H71.08072.08212.87343.87611.75471.7623

picture of methylisocyante state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 N2 C3 140.124 N2 C1 H5 108.725
N2 C1 H6 110.634 N2 C1 H7 110.634
N2 C3 O4 175.198 H5 C1 H6 108.782
H5 C1 H7 108.782 H6 C1 H7 109.240
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HF/cc-pVQZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.007      
2 N -0.490      
3 C 0.644      
4 O -0.402      
5 H 0.104      
6 H 0.076      
7 H 0.076      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  2.673 1.604 0.000 3.118
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -22.688 -0.850 0.000
y -0.850 -25.279 0.000
z 0.000 0.000 -22.548
Traceless
 xyz
x 1.226 -0.850 0.000
y -0.850 -2.661 0.000
z 0.000 0.000 1.435
Polar
3z2-r22.871
x2-y22.591
xy-0.850
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 4.887 1.617 0.000
y 1.617 5.505 0.000
z 0.000 0.000 3.447


<r2> (average value of r2) Å2
<r2> 81.858
(<r2>)1/2 9.048