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All results from a given calculation for CH3NCO (methylisocyante)

using model chemistry: mPW1PW91/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 mPW1PW91/TZVP
 hartrees
Energy at 0K-208.006963
Energy at 298.15K 
HF Energy-208.006963
Nuclear repulsion energy104.399761
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 mPW1PW91/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' 3151 3006 13.21 83.14 0.63 0.77
2 A' 3055 2915 45.21 194.79 0.01 0.03
3 A' 2443 2330 1150.51 3.36 0.04 0.07
4 A' 1551 1480 2.05 18.68 0.16 0.28
5 A' 1494 1425 10.82 18.48 0.62 0.77
6 A' 1468 1400 30.63 17.92 0.41 0.58
7 A' 1160 1107 14.97 2.54 0.65 0.79
8 A' 890 849 32.51 6.68 0.17 0.29
9 A' 644 614 33.86 0.55 0.65 0.79
10 A' 158 150 17.93 2.43 0.72 0.84
11 A" 3123 2979 18.90 76.85 0.75 0.86
12 A" 1509 1440 7.94 15.39 0.75 0.86
13 A" 1136 1084 0.01 1.67 0.75 0.86
14 A" 612 584 31.22 0.80 0.75 0.86
15 A" 49 47 3.17 1.67 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 11221.6 cm-1
Scaled (by 0.954) Zero Point Vibrational Energy (zpe) 10705.4 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 mPW1PW91/TZVP
ABC
3.01724 0.14382 0.14092

See section I.F.4 to change rotational constant units
Geometric Data calculated at mPW1PW91/TZVP

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 1.261 1.210 0.000
N2 0.000 0.544 0.000
C3 -0.528 -0.522 0.000
O4 -1.147 -1.516 0.000
H5 1.097 2.286 0.000
H6 1.840 0.951 0.888
H7 1.840 0.951 -0.888

Atom - Atom Distances (Å)
  C1 N2 C3 O4 H5 H6 H7
C11.42592.49043.63681.08821.09161.0916
N21.42591.19012.35742.05872.08332.0833
C32.49041.19011.17013.24492.92702.9270
O43.63682.35741.17014.41453.97403.9740
H51.08822.05873.24494.41451.76761.7676
H61.09162.08332.92703.97401.76761.7756
H71.09162.08332.92703.97401.76761.7756

picture of methylisocyante state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 N2 C3 144.197 N2 C1 H5 109.208
N2 C1 H6 110.995 N2 C1 H7 110.995
N2 C3 O4 174.416 H5 C1 H6 108.368
H5 C1 H7 108.368 H6 C1 H7 108.832
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at mPW1PW91/TZVP Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.271      
2 N -0.251      
3 C 0.397      
4 O -0.307      
5 H 0.150      
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
  2.592 1.884 0.000 3.205
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -22.515 -0.615 0.000
y -0.615 -24.984 0.000
z 0.000 0.000 -22.472
Traceless
 xyz
x 1.213 -0.615 0.000
y -0.615 -2.490 0.000
z 0.000 0.000 1.277
Polar
3z2-r22.555
x2-y22.469
xy-0.615
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 4.588 1.931 0.000
y 1.931 6.032 0.000
z 0.000 0.000 3.154


<r2> (average value of r2) Å2
<r2> 83.759
(<r2>)1/2 9.152