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All results from a given calculation for CH3NCO (methylisocyante)

using model chemistry: B3LYP/aug-cc-pVDZ

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes Cs 1A'
Energy calculated at B3LYP/aug-cc-pVDZ
 hartrees
Energy at 0K-208.018125
Energy at 298.15K 
HF Energy-208.018125
Nuclear repulsion energy103.601958
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 B3LYP/aug-cc-pVDZ
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' 3135 3042 13.32 73.00 0.62 0.77
2 A' 3035 2945 47.68 217.21 0.02 0.03
3 A' 2347 2277 1086.62 2.30 0.07 0.13
4 A' 1495 1451 0.87 9.96 0.11 0.20
5 A' 1458 1415 13.84 13.02 0.48 0.64
6 A' 1430 1388 31.33 14.75 0.21 0.35
7 A' 1142 1108 18.94 0.67 0.73 0.85
8 A' 879 853 28.80 9.43 0.11 0.21
9 A' 641 622 28.24 0.67 0.47 0.64
10 A' 180 175 17.05 2.38 0.63 0.78
11 A" 3102 3010 18.76 72.96 0.75 0.86
12 A" 1479 1435 7.00 7.36 0.75 0.86
13 A" 1118 1085 0.06 0.29 0.75 0.86
14 A" 586 569 20.19 0.60 0.75 0.86
15 A" 58 57 1.70 0.81 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 11041.9 cm-1
Scaled (by 0.9704) Zero Point Vibrational Energy (zpe) 10715.1 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 B3LYP/aug-cc-pVDZ
ABC
2.55620 0.14472 0.14066

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3LYP/aug-cc-pVDZ

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 1.360 1.087 0.000
N2 0.000 0.594 0.000
C3 -0.565 -0.472 0.000
O4 -1.238 -1.441 0.000
H5 1.336 2.182 0.000
H6 1.899 0.747 0.895
H7 1.899 0.747 -0.895

Atom - Atom Distances (Å)
  C1 N2 C3 O4 H5 H6 H7
C11.44642.47713.62471.09511.09891.0989
N21.44641.20672.38232.07442.10522.1052
C32.47711.20671.17973.26412.89162.8916
O43.62472.38231.17974.44373.92823.9282
H51.09512.07443.26414.44371.78221.7822
H61.09892.10522.89163.92821.78221.7908
H71.09892.10522.89163.92821.78221.7908

picture of methylisocyante state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 N2 C3 137.843 N2 C1 H5 108.632
N2 C1 H6 110.864 N2 C1 H7 110.864
N2 C3 O4 173.201 H5 C1 H6 108.643
H5 C1 H7 108.643 H6 C1 H7 109.137
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3LYP/aug-cc-pVDZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 1.117      
2 N -0.031      
3 C -0.009      
4 O -0.301      
5 H -0.344      
6 H -0.216      
7 H -0.216      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  2.555 1.535 0.000 2.980
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -22.930 -0.686 0.000
y -0.686 -25.338 0.000
z 0.000 0.000 -22.898
Traceless
 xyz
x 1.188 -0.686 0.000
y -0.686 -2.424 0.000
z 0.000 0.000 1.236
Polar
3z2-r22.472
x2-y22.408
xy-0.686
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 5.748 1.944 0.000
y 1.944 6.367 0.000
z 0.000 0.000 3.934


<r2> (average value of r2) Å2
<r2> 84.073
(<r2>)1/2 9.169