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: PBEPBEultrafine/aug-cc-pVDZ

19 10 17 12 22

States and conformations

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

Conformer 1 (CS)

Jump to S1C2
Energy calculated at PBEPBEultrafine/aug-cc-pVDZ
 hartrees
Energy at 0K-499.207374
Energy at 298.15K 
HF Energy-499.207374
Nuclear repulsion energy44.989433
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 PBEPBEultrafine/aug-cc-pVDZ
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' 3103 3084 6.39 126.86 0.07 0.13
2 A' 1349 1341 8.19 0.99 0.75 0.86
3 A' 834 829 30.80 9.06 0.11 0.20
4 A' 230 228 70.10 0.68 0.75 0.86
5 A" 3266 3247 0.05 51.25 0.75 0.86
6 A" 959 953 0.14 1.38 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 4870.6 cm-1
Scaled (by 0.9939) Zero Point Vibrational Energy (zpe) 4840.9 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 PBEPBEultrafine/aug-cc-pVDZ
ABC
8.87987 0.52039 0.49158

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -0.000 1.126 0.000
Cl2 -0.000 -0.589 0.000
H3 0.000 1.629 0.970
H4 0.000 1.629 -0.970

Atom - Atom Distances (Å)
  C1 Cl2 H3 H4
C11.71481.09321.0932
Cl21.71482.42112.4211
H31.09322.42111.9410
H41.09322.42111.9410

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 117.409 Br2 C1 H4 117.409
H3 C1 H4 125.183
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at PBEPBEultrafine/aug-cc-pVDZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.296      
2 Cl 0.013      
3 H -0.154      
4 H -0.154      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.001 1.007 0.000 1.007
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -20.828 0.001 0.000
y 0.001 -17.617 0.000
z 0.000 0.000 -18.682
Traceless
 xyz
x -2.678 0.001 0.000
y 0.001 2.138 0.000
z 0.000 0.000 0.541
Polar
3z2-r21.081
x2-y2-3.211
xy0.001
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 3.580 0.000 0.000
y 0.000 5.591 0.000
z 0.000 0.000 3.721


<r2> (average value of r2) Å2
<r2> 32.587
(<r2>)1/2 5.709

Conformer 2 (C2V)

Jump to S1C1
Energy calculated at PBEPBEultrafine/aug-cc-pVDZ
 hartrees
Energy at 0K-499.207373
Energy at 298.15K 
HF Energy-499.207373
Nuclear repulsion energy44.989580
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 PBEPBEultrafine/aug-cc-pVDZ
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 3102 3083 6.40 127.00 0.07 0.13
2 A1 1350 1342 8.23      
3 A1 834 829 30.74      
4 B1 233 232 70.04      
5 B2 3265 3245 0.05      
6 B2 959 953 0.15      

Unscaled Zero Point Vibrational Energy (zpe) 4871.9 cm-1
Scaled (by 0.9939) Zero Point Vibrational Energy (zpe) 4842.2 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 PBEPBEultrafine/aug-cc-pVDZ
ABC
8.88751 0.52035 0.49157

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

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 -1.126
Cl2 0.000 0.000 0.589
H3 0.000 0.970 -1.630
H4 0.000 -0.970 -1.630

Atom - Atom Distances (Å)
  C1 Cl2 H3 H4
C11.71471.09331.0933
Cl21.71472.42172.4217
H31.09332.42171.9401
H41.09332.42171.9401

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 117.465 Br2 C1 H4 117.465
H3 C1 H4 125.070
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at PBEPBEultrafine/aug-cc-pVDZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.296      
2 Cl 0.013      
3 H -0.154      
4 H -0.154      


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 -1.006 1.006
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -20.828 0.000 0.000
y 0.000 -18.685 0.000
z 0.000 0.000 -17.614
Traceless
 xyz
x -2.678 0.000 0.000
y 0.000 0.535 0.000
z 0.000 0.000 2.143
Polar
3z2-r24.286
x2-y2-2.142
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 3.580 0.000 0.000
y 0.000 3.721 0.000
z 0.000 0.000 5.592


<r2> (average value of r2) Å2
<r2> 32.589
(<r2>)1/2 5.709