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All results from a given calculation for CH3NCO (methylisocyante)

using model chemistry: TPSSh/aug-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 TPSSh/aug-cc-pVQZ
 hartrees
Energy at 0K-208.091756
Energy at 298.15K 
HF Energy-208.091756
Nuclear repulsion energy104.020379
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 TPSSh/aug-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' 3118 3118 15.13 72.38 0.63 0.77
2 A' 3027 3027 47.85 222.11 0.02 0.03
3 A' 2346 2346 1034.36 1.48 0.06 0.12
4 A' 1514 1514 1.87 4.19 0.35 0.52
5 A' 1483 1483 15.16 10.70 0.37 0.54
6 A' 1450 1450 32.28 24.35 0.18 0.31
7 A' 1157 1157 20.23 0.72 0.75 0.86
8 A' 869 869 29.14 9.16 0.11 0.20
9 A' 639 639 25.93 0.66 0.44 0.62
10 A' 177 177 16.48 2.24 0.61 0.76
11 A" 3089 3089 20.76 72.67 0.75 0.86
12 A" 1517 1517 5.86 7.34 0.75 0.86
13 A" 1130 1130 0.18 0.31 0.75 0.86
14 A" 586 586 17.92 0.59 0.75 0.86
15 A" 46 46 1.79 0.70 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 11073.4 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 11073.4 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 TPSSh/aug-cc-pVQZ
ABC
2.63536 0.14534 0.14143

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 1.348 1.098 0.000
N2 0.000 0.585 0.000
C3 -0.559 -0.477 0.000
O4 -1.227 -1.443 0.000
H5 1.305 2.185 0.000
H6 1.887 0.769 0.890
H7 1.887 0.769 -0.890

Atom - Atom Distances (Å)
  C1 N2 C3 O4 H5 H6 H7
C11.44282.47413.61851.08771.09111.0911
N21.44281.20062.37072.06502.09452.0945
C32.47411.20061.17453.25042.88582.8858
O43.61852.37071.17454.42483.92223.9222
H51.08772.06503.25044.42481.77121.7712
H61.09112.09452.88583.92221.77121.7792
H71.09112.09452.88583.92221.77121.7792

picture of methylisocyante state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 N2 C3 138.585 N2 C1 H5 108.563
N2 C1 H6 110.735 N2 C1 H7 110.735
N2 C3 O4 173.074 H5 C1 H6 108.764
H5 C1 H7 108.764 H6 C1 H7 109.231
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at TPSSh/aug-cc-pVQZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -1.189      
2 N -0.320      
3 C 0.566      
4 O -0.346      
5 H 0.459      
6 H 0.415      
7 H 0.415      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  2.490 1.527 0.000 2.921
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 5.738 1.905 0.000
y 1.905 6.351 0.000
z 0.000 0.000 3.963


<r2> (average value of r2) Å2
<r2> 83.451
(<r2>)1/2 9.135