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All results from a given calculation for CH3SeCH3 (dimethylselenide)

using model chemistry: B3PW91/aug-cc-pVDZ

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 1A1
Energy calculated at B3PW91/aug-cc-pVDZ
 hartrees
Energy at 0K-2481.342991
Energy at 298.15K-2481.347022
HF Energy-2481.342991
Nuclear repulsion energy185.673859
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 B3PW91/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 3165 3053 9.39      
2 A1 3051 2943 24.20      
3 A1 1440 1389 0.85      
4 A1 1291 1245 1.59      
5 A1 966 931 15.11      
6 A1 596 575 0.27      
7 A1 207 200 0.03      
8 A2 3158 3047 0.00      
9 A2 1422 1371 0.00      
10 A2 881 850 0.00      
11 A2 151 145 0.00      
12 B1 3153 3041 13.76      
13 B1 1431 1380 12.04      
14 B1 910 878 9.13      
15 B1 150 145 0.33      
16 B2 3165 3053 2.04      
17 B2 3054 2945 23.36      
18 B2 1433 1382 14.34      
19 B2 1268 1223 7.35      
20 B2 846 816 0.42      
21 B2 612 590 0.73      

Unscaled Zero Point Vibrational Energy (zpe) 16173.4 cm-1
Scaled (by 0.9646) Zero Point Vibrational Energy (zpe) 15600.9 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 B3PW91/aug-cc-pVDZ
ABC
0.37877 0.22560 0.14959

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3PW91/aug-cc-pVDZ

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
Se1 0.000 0.000 0.473
C2 0.000 1.467 -0.819
C3 0.000 -1.467 -0.819
H4 0.000 2.400 -0.243
H5 0.000 -2.400 -0.243
H6 0.901 1.428 -1.443
H7 -0.901 1.428 -1.443
H8 -0.901 -1.428 -1.443
H9 0.901 -1.428 -1.443

Atom - Atom Distances (Å)
  Se1 C2 C3 H4 H5 H6 H7 H8 H9
Se11.95481.95482.50432.50432.55402.55402.55402.5540
C21.95482.93341.09653.90901.09651.09653.09503.0950
C31.95482.93343.90901.09653.09503.09501.09651.0965
H42.50431.09653.90904.79931.78781.78784.11114.1111
H52.50433.90901.09654.79934.11114.11111.78781.7878
H62.55401.09653.09501.78784.11111.80133.37632.8556
H72.55401.09653.09501.78784.11111.80132.85563.3763
H82.55403.09501.09654.11111.78783.37632.85561.8013
H92.55403.09501.09654.11111.78782.85563.37631.8013

picture of dimethylselenide state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
Se1 C2 H4 106.924 Se1 C2 H6 110.473
Se1 C2 H7 110.473 Se1 C3 H5 106.924
Se1 C3 H8 110.473 Se1 C3 H9 110.473
C2 Se1 C3 97.233 H4 C2 H6 109.222
H4 C2 H7 109.222 H5 C3 H8 109.222
H5 C3 H9 109.222 H6 C2 H7 110.446
H8 C3 H9 110.446
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3PW91/aug-cc-pVDZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 Se 0.564      
2 C 0.258      
3 C 0.258      
4 H -0.235      
5 H -0.235      
6 H -0.152      
7 H -0.152      
8 H -0.152      
9 H -0.152      


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 -1.567 1.567
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -34.450 0.000 0.000
y 0.000 -29.157 0.000
z 0.000 0.000 -32.635
Traceless
 xyz
x -3.554 0.000 0.000
y 0.000 4.386 0.000
z 0.000 0.000 -0.832
Polar
3z2-r2-1.663
x2-y2-5.293
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 7.093 0.000 0.000
y 0.000 9.677 0.000
z 0.000 0.000 8.338


<r2> (average value of r2) Å2
<r2> 92.882
(<r2>)1/2 9.638