return to home page Computational Chemistry Comparison and Benchmark DataBase Release 22 (May 2022) Standard Reference Database 101 National Institute of Standards and Technology
You are here: Calculated > Energy > Optimized > Energy

All results from a given calculation for HCNH (methyleneazane)

using model chemistry: B3LYP/CEP-121G

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 B3LYP/CEP-121G
 hartrees
Energy at 0K-16.628086
Energy at 298.15K-16.629346
HF Energy-16.628086
Nuclear repulsion energy15.397300
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/CEP-121G
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' 3256 3173 12.90      
2 A' 2912 2837 75.94      
3 A' 1770 1725 27.93      
4 A' 955 930 80.33      
5 A' 800 780 245.06      
6 A" 892 869 9.78      

Unscaled Zero Point Vibrational Energy (zpe) 5292.0 cm-1
Scaled (by 0.9745) Zero Point Vibrational Energy (zpe) 5157.1 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/CEP-121G
ABC
14.21986 1.23173 1.13355

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3LYP/CEP-121G

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.106 0.656 0.000
N2 0.106 -0.592 0.000
H3 -0.675 1.440 0.000
H4 -0.706 -1.233 0.000

Atom - Atom Distances (Å)
  C1 N2 H3 H4
C11.24761.10682.0554
N21.24762.17681.0342
H31.10682.17682.6727
H42.05541.03422.6727

picture of methyleneazane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 N2 H4 128.285 H3 C1 N2 135.112
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3LYP/CEP-121G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.202      
2 N -0.186      
3 H 0.132      
4 H 0.256      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -2.627 0.196 0.000 2.634
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -12.670 0.721 0.000
y 0.721 -11.017 0.000
z 0.000 0.000 -12.748
Traceless
 xyz
x -0.788 0.721 0.000
y 0.721 1.693 0.000
z 0.000 0.000 -0.905
Polar
3z2-r2-1.809
x2-y2-1.654
xy0.721
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 2.118 0.125 0.000
y 0.125 4.509 0.000
z 0.000 0.000 1.400


<r2> (average value of r2) Å2
<r2> 15.705
(<r2>)1/2 3.963

Conformer 2 (CS trans)

Jump to S1C1
Energy calculated at B3LYP/CEP-121G
 hartrees
Energy at 0K-16.637521
Energy at 298.15K-16.638860
HF Energy-16.637521
Nuclear repulsion energy15.369169
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/CEP-121G
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' 3401 3314 1.31      
2 A' 2997 2921 38.13      
3 A' 1695 1652 25.56      
4 A' 1185 1155 11.07      
5 A' 893 870 266.76      
6 A" 981 956 163.12      

Unscaled Zero Point Vibrational Energy (zpe) 5575.8 cm-1
Scaled (by 0.9745) Zero Point Vibrational Energy (zpe) 5433.6 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/CEP-121G
ABC
14.01081 1.23113 1.13169

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3LYP/CEP-121G

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -0.002 0.668 0.000
N2 -0.002 -0.595 0.000
H3 0.905 1.294 0.000
H4 -0.875 -1.138 0.000

Atom - Atom Distances (Å)
  C1 N2 H3 H4
C11.26271.10252.0055
N21.26272.09551.0280
H31.10252.09553.0138
H42.00551.02803.0138

picture of methyleneazane state 1 conformation 2
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 N2 H4 121.875 H3 C1 N2 124.614
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3LYP/CEP-121G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.224      
2 N -0.195      
3 H 0.141      
4 H 0.277      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -0.544 0.074 0.000 0.549
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -11.551 3.667 0.000
y 3.667 -11.592 0.000
z 0.000 0.000 -12.821
Traceless
 xyz
x 0.655 3.667 0.000
y 3.667 0.594 0.000
z 0.000 0.000 -1.249
Polar
3z2-r2-2.499
x2-y20.041
xy3.667
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 2.451 0.357 0.000
y 0.357 4.157 0.000
z 0.000 0.000 1.517


<r2> (average value of r2) Å2
<r2> 15.595
(<r2>)1/2 3.949