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 ZnCH2 (Zinc methylene)

using model chemistry: HF/6-311G**

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 3B1
2 1 no C2V 1A1
2 2 yes CS 1A'

State 1 (3B1) , Conformer 1 (C2V)

Jump to S1C2 S2C1 S2C2
Energy calculated at HF/6-311G**
 hartrees
Energy at 0K-1816.608818
Energy at 298.15K-1816.610067
Nuclear repulsion energy64.639854
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 HF/6-311G**
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
4/u)
Dep P Dep U
1 A1 3198 2905 114.95      
2 A1 1347 1224 250.67      
3 A1 431 392 0.39      
4 B1 607 551 96.55      
5 B2 3296 2994 39.08      
6 B2 531 483 31.62      

Unscaled Zero Point Vibrational Energy (zpe) 4704.7 cm-1
Scaled (by 0.9085) Zero Point Vibrational Energy (zpe) 4274.2 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 HF/6-311G**
ABC
10.13731 0.32532 0.31521

See section I.F.4 to change rotational constant units
Geometric Data calculated at HF/6-311G**

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
Zn1 0.000 0.000 0.458
C2 0.000 0.000 -1.569
H3 0.000 0.908 -2.157
H4 0.000 -0.908 -2.157

Atom - Atom Distances (Å)
  Zn1 C2 H3 H4
Zn12.02632.76752.7675
C22.02631.08201.0820
H32.76751.08201.8166
H42.76751.08201.8166

picture of Zinc methylene state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
Zn1 C2 H3 122.913 Zn1 C2 H4 122.913
H3 C2 H4 114.174
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HF/6-311G** Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 Zn 0.520      
2 C -0.778      
3 H 0.129      
4 H 0.129      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.000 0.000 1.942 1.942
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -22.881 0.000 0.000
y 0.000 -21.285 0.000
z 0.000 0.000 -23.697
Traceless
 xyz
x -0.390 0.000 0.000
y 0.000 2.004 0.000
z 0.000 0.000 -1.613
Polar
3z2-r2-3.227
x2-y2-1.596
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 1.545 0.000 0.000
y 0.000 2.491 0.000
z 0.000 0.000 8.342


<r2> (average value of r2) Å2
<r2> 46.129
(<r2>)1/2 6.792

State 1 () , Conformer 2 ()

Jump to S1C1 S2C1 S2C2
Energy calculated at HF/6-311G**
 hartrees
Energy at 0K-1816.608818
Energy at 298.15K-1816.610067
Nuclear repulsion energy64.639854
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 HF/6-311G**
Rotational Constants (cm-1) from geometry optimized at HF/6-311G**
ABC
10.13731 0.32532 0.31521

See section I.F.4 to change rotational constant units
Geometric Data calculated at HF/6-311G**

Point Group is C2v

Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability

State 2 (1A1) , Conformer 1 (C2V)

Jump to S1C1 S1C2 S2C2
Energy calculated at HF/6-311G**
 hartrees
Energy at 0K-1816.512412
Energy at 298.15K-1816.513719
Nuclear repulsion energy64.150971
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 HF/6-311G**
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
4/u)
Dep P Dep U
1 A1 3349 3042 1.04      
2 A1 1111 1009 896.91      
3 A1 247 224 147.90      
4 B1 5452 4953 13485.01      
5 B2 3646 3313 48.19      
6 B2 698 634 36.96      

Unscaled Zero Point Vibrational Energy (zpe) 7250.8 cm-1
Scaled (by 0.9085) Zero Point Vibrational Energy (zpe) 6587.4 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 HF/6-311G**
ABC
7.95896 0.32270 0.31012

See section I.F.4 to change rotational constant units
Geometric Data calculated at HF/6-311G**

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
Zn1 0.000 0.000 0.454
C2 0.000 0.000 -1.636
H3 0.000 1.025 -1.908
H4 0.000 -1.025 -1.908

Atom - Atom Distances (Å)
  Zn1 C2 H3 H4
Zn12.09012.57482.5748
C22.09011.06051.0605
H32.57481.06052.0502
H42.57481.06052.0502

picture of Zinc methylene state 2 conformation 1
More geometry information
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HF/6-311G** Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 Zn 0.492      
2 C -0.913      
3 H 0.210      
4 H 0.210      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.000 0.000 4.069 4.069
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -24.674 0.000 0.000
y 0.000 -19.039 0.000
z 0.000 0.000 -23.757
Traceless
 xyz
x -3.276 0.000 0.000
y 0.000 5.176 0.000
z 0.000 0.000 -1.901
Polar
3z2-r2-3.801
x2-y2-5.635
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 0.789 0.000 0.000
y 0.000 2.212 0.000
z 0.000 0.000 11.324


<r2> (average value of r2) Å2
<r2> 45.672
(<r2>)1/2 6.758

State 2 (1A') , Conformer 2 (CS)

Jump to S1C1 S1C2 S2C1
Energy calculated at HF/6-311G**
 hartrees
Energy at 0K-1816.566254
Energy at 298.15K-1816.567261
Nuclear repulsion energy58.168816
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 HF/6-311G**
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' 3070 2789 86.27      
2 A' 1496 1359 1.63      
3 A' 672 610 360.83      
4 A' 163 148 17.32      
5 A" 3127 2841 99.38      
6 A" 602 547 18.91      

Unscaled Zero Point Vibrational Energy (zpe) 4565.0 cm-1
Scaled (by 0.9085) Zero Point Vibrational Energy (zpe) 4147.3 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 HF/6-311G**
ABC
7.52078 0.25636 0.25346

See section I.F.4 to change rotational constant units
Geometric Data calculated at HF/6-311G**

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
Zn1 -0.035 -0.504 0.000
C2 -0.035 1.848 0.000
H3 0.629 2.012 0.862
H4 0.629 2.012 -0.862

Atom - Atom Distances (Å)
  Zn1 C2 H3 H4
Zn12.35142.74122.7412
C22.35141.10051.1005
H32.74121.10051.7234
H42.74121.10051.7234

picture of Zinc methylene state 2 conformation 2
More geometry information
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HF/6-311G** Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 Zn 0.266      
2 C -0.488      
3 H 0.111      
4 H 0.111      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  1.588 -1.744 0.000 2.359
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -23.691 3.135 0.000
y 3.135 -22.688 0.000
z 0.000 0.000 -21.876
Traceless
 xyz
x -1.409 3.135 0.000
y 3.135 0.096 0.000
z 0.000 0.000 1.313
Polar
3z2-r22.626
x2-y2-1.003
xy3.135
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 2.211 0.433 0.000
y 0.433 13.477 0.000
z 0.000 0.000 2.589


<r2> (average value of r2) Å2
<r2> 52.726
(<r2>)1/2 7.261