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All results from a given calculation for HCNH (methyleneazane)

using model chemistry: mPW1PW91/6-31G**

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 no CS cis 2A'
1 2 yes CS trans 2A'

Conformer 1 (CS cis)

Jump to S1C2
Energy calculated at mPW1PW91/6-31G**
 hartrees
Energy at 0K-93.933343
Energy at 298.15K-93.934642
HF Energy-93.933343
Nuclear repulsion energy28.205826
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 mPW1PW91/6-31G**
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' 3372 3208 3.37      
2 A' 3025 2879 53.58      
3 A' 1889 1797 29.40      
4 A' 1035 985 129.82      
5 A' 876 833 123.18      
6 A" 921 876 6.07      

Unscaled Zero Point Vibrational Energy (zpe) 5558.7 cm-1
Scaled (by 0.9515) Zero Point Vibrational Energy (zpe) 5289.1 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 mPW1PW91/6-31G**
ABC
12.94392 1.30225 1.18321

See section I.F.4 to change rotational constant units
Geometric Data calculated at mPW1PW91/6-31G**

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.111 0.636 0.000
N2 0.111 -0.589 0.000
H3 -0.671 1.409 0.000
H4 -0.774 -1.107 0.000

Atom - Atom Distances (Å)
  C1 N2 H3 H4
C11.22491.09891.9555
N21.22492.14481.0257
H31.09892.14482.5183
H41.95551.02572.5183

picture of methyleneazane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 N2 H4 120.395 H3 C1 N2 134.653
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at mPW1PW91/6-31G** Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.038      
2 N -0.453      
3 H 0.141      
4 H 0.274      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -2.203 0.461 0.000 2.251
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -11.821 0.754 0.000
y 0.754 -10.879 0.000
z 0.000 0.000 -12.363
Traceless
 xyz
x -0.200 0.754 0.000
y 0.754 1.213 0.000
z 0.000 0.000 -1.013
Polar
3z2-r2-2.027
x2-y2-0.942
xy0.754
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 1.938 0.040 0.000
y 0.040 3.795 0.000
z 0.000 0.000 1.203


<r2> (average value of r2) Å2
<r2> 16.574
(<r2>)1/2 4.071

Conformer 2 (CS trans)

Jump to S1C1
Energy calculated at mPW1PW91/6-31G**
 hartrees
Energy at 0K-93.941206
Energy at 298.15K-93.942553
HF Energy-93.941206
Nuclear repulsion energy28.142318
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 mPW1PW91/6-31G**
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' 3494 3324 4.09      
2 A' 3069 2920 30.77      
3 A' 1842 1753 28.91      
4 A' 1217 1158 10.49      
5 A' 918 874 223.70      
6 A" 991 942 114.97      

Unscaled Zero Point Vibrational Energy (zpe) 5764.8 cm-1
Scaled (by 0.9515) Zero Point Vibrational Energy (zpe) 5485.2 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 mPW1PW91/6-31G**
ABC
13.49608 1.29557 1.18210

See section I.F.4 to change rotational constant units
Geometric Data calculated at mPW1PW91/6-31G**

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -0.000 0.648 0.000
N2 -0.000 -0.586 0.000
H3 0.904 1.272 0.000
H4 -0.904 -1.060 0.000

Atom - Atom Distances (Å)
  C1 N2 H3 H4
C11.23441.09771.9329
N21.23442.06571.0205
H31.09772.06572.9502
H41.93291.02052.9502

picture of methyleneazane state 1 conformation 2
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 N2 H4 117.695 H3 C1 N2 124.587
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at mPW1PW91/6-31G** Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.000      
2 N -0.442      
3 H 0.153      
4 H 0.289      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -0.572 0.242 0.000 0.621
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -10.976 3.062 0.000
y 3.062 -11.243 0.000
z 0.000 0.000 -12.398
Traceless
 xyz
x 0.845 3.062 0.000
y 3.062 0.444 0.000
z 0.000 0.000 -1.289
Polar
3z2-r2-2.577
x2-y20.268
xy3.062
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 2.175 0.515 0.000
y 0.515 3.625 0.000
z 0.000 0.000 1.251


<r2> (average value of r2) Å2
<r2> 16.508
(<r2>)1/2 4.063