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All results from a given calculation for HCNH (methyleneazane)

using model chemistry: ROHF/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 ROHF/6-31G*
 hartrees
Energy at 0K-93.392963
Energy at 298.15K-93.394340
HF Energy-93.392963
Nuclear repulsion energy28.231842
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 ROHF/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' 3584 3191 2.51      
2 A' 3250 2894 33.00      
3 A' 1666 1484 0.67      
4 A' 1266 1127 116.68      
5 A' 1013 902 45.27      
6 A" 1063 947 8.55      

Unscaled Zero Point Vibrational Energy (zpe) 5920.8 cm-1
Scaled (by 0.8904) Zero Point Vibrational Energy (zpe) 5271.9 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 ROHF/6-31G*
ABC
12.44797 1.31108 1.18615

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.113 0.637 0.000
N2 0.113 -0.597 0.000
H3 -0.669 1.387 0.000
H4 -0.803 -1.028 0.000

Atom - Atom Distances (Å)
  C1 N2 H3 H4
C11.23381.08351.8999
N21.23382.13251.0121
H31.08352.13252.4186
H41.89991.01212.4186

picture of methyleneazane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 N2 H4 115.194 H3 C1 N2 133.824
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at ROHF/6-31G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.040      
2 N -0.569      
3 H 0.178      
4 H 0.351      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -2.254 1.025 0.000 2.476
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -11.773 1.114 0.000
y 1.114 -11.427 0.000
z 0.000 0.000 -12.609
Traceless
 xyz
x 0.246 1.114 0.000
y 1.114 0.763 0.000
z 0.000 0.000 -1.009
Polar
3z2-r2-2.018
x2-y2-0.345
xy1.114
xz0.000
yz0.000


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


<r2> (average value of r2) Å2
<r2> 16.621
(<r2>)1/2 4.077

Conformer 2 (CS trans)

Jump to S1C1
Energy calculated at ROHF/6-31G*
 hartrees
Energy at 0K-93.398748
Energy at 298.15K-93.400139
HF Energy-93.398748
Nuclear repulsion energy28.279002
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 ROHF/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' 3679 3275 3.76      
2 A' 3294 2933 20.16      
3 A' 1705 1518 10.90      
4 A' 1332 1186 19.27      
5 A' 1033 920 169.67      
6 A" 1100 979 98.80      

Unscaled Zero Point Vibrational Energy (zpe) 6070.8 cm-1
Scaled (by 0.8904) Zero Point Vibrational Energy (zpe) 5405.4 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 ROHF/6-31G*
ABC
13.76953 1.30380 1.19102

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.004 0.642 0.000
N2 0.004 -0.591 0.000
H3 0.867 1.293 0.000
H4 -0.913 -1.010 0.000

Atom - Atom Distances (Å)
  C1 N2 H3 H4
C11.23351.08111.8900
N21.23352.07241.0079
H31.08112.07242.9110
H41.89001.00792.9110

picture of methyleneazane state 1 conformation 2
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 N2 H4 114.587 H3 C1 N2 126.988
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at ROHF/6-31G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.012      
2 N -0.568      
3 H 0.195      
4 H 0.361      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -0.885 0.890 0.000 1.255
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -11.058 3.001 0.000
y 3.001 -11.512 0.000
z 0.000 0.000 -12.620
Traceless
 xyz
x 1.008 3.001 0.000
y 3.001 0.327 0.000
z 0.000 0.000 -1.335
Polar
3z2-r2-2.670
x2-y20.454
xy3.001
xz0.000
yz0.000


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


<r2> (average value of r2) Å2
<r2> 16.527
(<r2>)1/2 4.065