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 CH2Cl (chloromethyl radical)

using model chemistry: HF/aug-cc-pVQZ

19 10 17 12 22

States and conformations

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

Conformer 1 (CS)

Jump to S1C2
Energy calculated at HF/aug-cc-pVQZ
 hartrees
Energy at 0K-498.522775
Energy at 298.15K 
HF Energy-498.522775
Nuclear repulsion energy45.310674
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/aug-cc-pVQZ
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' 3298 2996 11.33 112.05 0.08 0.14
2 A' 1524 1385 16.68 0.95 0.62 0.77
3 A' 858 780 40.94 9.52 0.13 0.23
4 A' 442 401 46.71 0.42 0.29 0.45
5 A" 3445 3130 0.05 44.08 0.75 0.86
6 A" 1071 973 0.04 0.92 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 5319.0 cm-1
Scaled (by 0.9085) Zero Point Vibrational Energy (zpe) 4832.3 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/aug-cc-pVQZ
ABC
9.26444 0.52437 0.49765

See section I.F.4 to change rotational constant units
Geometric Data calculated at HF/aug-cc-pVQZ

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -0.014 1.125 0.000
Cl2 -0.014 -0.586 0.000
H3 0.159 1.606 0.938
H4 0.159 1.606 -0.938

Atom - Atom Distances (Å)
  C1 Cl2 H3 H4
C11.71051.06801.0680
Cl21.71052.39002.3900
H31.06802.39001.8757
H41.06802.39001.8757

picture of chloromethyl radical state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
Br2 C1 H3 116.769 Br2 C1 H4 116.769
H3 C1 H4 122.833
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HF/aug-cc-pVQZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.764      
2 Cl -0.067      
3 H 0.416      
4 H 0.416      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.276 1.462 0.000 1.488
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -20.491 0.505 0.000
y 0.505 -17.347 0.000
z 0.000 0.000 -18.650
Traceless
 xyz
x -2.493 0.505 0.000
y 0.505 2.223 0.000
z 0.000 0.000 0.269
Polar
3z2-r20.539
x2-y2-3.144
xy0.505
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 3.341 0.022 0.000
y 0.022 4.948 0.000
z 0.000 0.000 3.549


<r2> (average value of r2) Å2
<r2> 32.155
(<r2>)1/2 5.671

Conformer 2 (C2V)

Jump to S1C1
Energy calculated at HF/aug-cc-pVQZ
 hartrees
Energy at 0K-498.522621
Energy at 298.15K 
HF Energy-498.522621
Nuclear repulsion energy45.364133
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/aug-cc-pVQZ
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 3309 3006 9.08 109.38 0.08 0.14
2 A1 1522 1383 17.82      
3 A1 862 784 37.81      
4 B1 319i 289i 60.61      
5 B2 3464 3147 0.07      
6 B2 1060 963 0.02      

Unscaled Zero Point Vibrational Energy (zpe) 4949.5 cm-1
Scaled (by 0.9085) Zero Point Vibrational Energy (zpe) 4496.6 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 HF/aug-cc-pVQZ
ABC
9.38655 0.52577 0.49788

See section I.F.4 to change rotational constant units
Geometric Data calculated at HF/aug-cc-pVQZ

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 -1.121
Cl2 0.000 0.000 0.586
H3 0.000 0.944 -1.618
H4 0.000 -0.944 -1.618

Atom - Atom Distances (Å)
  C1 Cl2 H3 H4
C11.70681.06661.0666
Cl21.70682.39712.3971
H31.06662.39711.8879
H41.06662.39711.8879

picture of chloromethyl radical state 1 conformation 2
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
Br2 C1 H3 117.754 Br2 C1 H4 117.754
H3 C1 H4 124.491
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HF/aug-cc-pVQZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.788      
2 Cl -0.066      
3 H 0.427      
4 H 0.427      


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 -1.465 1.465
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -20.564 0.000 0.000
y 0.000 -18.593 0.000
z 0.000 0.000 -17.268
Traceless
 xyz
x -2.633 0.000 0.000
y 0.000 0.323 0.000
z 0.000 0.000 2.310
Polar
3z2-r24.620
x2-y2-1.971
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 3.345 0.000 0.000
y 0.000 3.544 0.000
z 0.000 0.000 4.929


<r2> (average value of r2) Å2
<r2> 32.136
(<r2>)1/2 5.669