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 CH3SeCH3 (dimethylselenide)

using model chemistry: PBEPBE/6-311G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 1A1
Energy calculated at PBEPBE/6-311G*
 hartrees
Energy at 0K-2480.870497
Energy at 298.15K-2480.874475
HF Energy-2480.870497
Nuclear repulsion energy184.585825
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 PBEPBE/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 3085 3053 13.22      
2 A1 2982 2951 27.94      
3 A1 1449 1434 0.49      
4 A1 1291 1278 2.49      
5 A1 955 945 23.19      
6 A1 571 565 0.25      
7 A1 203 201 0.03      
8 A2 3079 3047 0.00      
9 A2 1431 1416 0.00      
10 A2 873 864 0.00      
11 A2 159 157 0.00      
12 B1 3072 3040 25.14      
13 B1 1440 1425 18.75      
14 B1 904 895 17.31      
15 B1 149 147 0.47      
16 B2 3085 3053 3.70      
17 B2 2986 2955 25.96      
18 B2 1442 1427 21.02      
19 B2 1269 1255 5.29      
20 B2 838 830 0.58      
21 B2 584 578 1.16      

Unscaled Zero Point Vibrational Energy (zpe) 15923.8 cm-1
Scaled (by 0.9896) Zero Point Vibrational Energy (zpe) 15758.2 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 PBEPBE/6-311G*
ABC
0.37010 0.22455 0.14778

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

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
Se1 0.000 0.000 0.479
C2 0.000 1.470 -0.830
C3 0.000 -1.470 -0.830
H4 0.000 2.408 -0.259
H5 0.000 -2.408 -0.259
H6 0.901 1.429 -1.456
H7 -0.901 1.429 -1.456
H8 -0.901 -1.429 -1.456
H9 0.901 -1.429 -1.456

Atom - Atom Distances (Å)
  Se1 C2 C3 H4 H5 H6 H7 H8 H9
Se11.96891.96892.51822.51822.56902.56902.56902.5690
C21.96892.94051.09783.91971.09791.09793.10013.1001
C31.96892.94053.91971.09783.10013.10011.09791.0979
H42.51821.09783.91974.81511.78951.78954.11904.1190
H52.51823.91971.09784.81514.11904.11901.78951.7895
H62.56901.09793.10011.78954.11901.80273.37942.8585
H72.56901.09793.10011.78954.11901.80272.85853.3794
H82.56903.10011.09794.11901.78953.37942.85851.8027
H92.56903.10011.09794.11901.78952.85853.37941.8027

picture of dimethylselenide state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
Se1 C2 H4 106.938 Se1 C2 H6 110.551
Se1 C2 H7 110.551 Se1 C3 H5 106.938
Se1 C3 H8 110.551 Se1 C3 H9 110.551
C2 Se1 C3 96.618 H4 C2 H6 109.178
H4 C2 H7 109.178 H5 C3 H8 109.178
H5 C3 H9 109.178 H6 C2 H7 110.365
H8 C3 H9 110.365
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at PBEPBE/6-311G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 Se 0.074      
2 C -0.763      
3 C -0.763      
4 H 0.245      
5 H 0.245      
6 H 0.240      
7 H 0.240      
8 H 0.240      
9 H 0.240      


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 -1.493 1.493
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -34.700 0.000 0.000
y 0.000 -29.351 0.000
z 0.000 0.000 -32.616
Traceless
 xyz
x -3.717 0.000 0.000
y 0.000 4.306 0.000
z 0.000 0.000 -0.590
Polar
3z2-r2-1.180
x2-y2-5.349
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 5.359 0.000 0.000
y 0.000 8.542 0.000
z 0.000 0.000 7.163


<r2> (average value of r2) Å2
<r2> 93.772
(<r2>)1/2 9.684