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All results from a given calculation for CH3SeCH3 (dimethylselenide)

using model chemistry: CCD/3-21G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 1A1
Energy calculated at CCD/3-21G*
 hartrees
Energy at 0K-2467.830875
Energy at 298.15K-2467.835020
HF Energy-2467.479874
Nuclear repulsion energy184.127174
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 CCD/3-21G*
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 3140 3003 9.74      
2 A1 3051 2919 17.91      
3 A1 1566 1497 0.46      
4 A1 1409 1347 2.48      
5 A1 1026 982 20.68      
6 A1 605 579 0.42      
7 A1 220 211 0.09      
8 A2 3140 3004 0.00      
9 A2 1548 1481 0.00      
10 A2 942 901 0.00      
11 A2 162 155 0.00      
12 B1 3137 3000 21.56      
13 B1 1557 1489 14.21      
14 B1 971 929 12.88      
15 B1 151 144 0.35      
16 B2 3140 3003 4.50      
17 B2 3054 2921 18.79      
18 B2 1559 1491 14.34      
19 B2 1388 1327 7.22      
20 B2 911 871 0.86      
21 B2 626 599 0.25      

Unscaled Zero Point Vibrational Energy (zpe) 16650.4 cm-1
Scaled (by 0.9565) Zero Point Vibrational Energy (zpe) 15926.1 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 CCD/3-21G*
ABC
0.36156 0.22621 0.14709

See section I.F.4 to change rotational constant units
Geometric Data calculated at CCD/3-21G*

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
Se1 0.000 0.000 0.486
C2 0.000 1.466 -0.842
C3 0.000 -1.466 -0.842
H4 0.000 2.410 -0.285
H5 0.000 -2.410 -0.285
H6 0.901 1.404 -1.463
H7 -0.901 1.404 -1.463
H8 -0.901 -1.404 -1.463
H9 0.901 -1.404 -1.463

Atom - Atom Distances (Å)
  Se1 C2 C3 H4 H5 H6 H7 H8 H9
Se11.97841.97842.53062.53062.56532.56532.56532.5653
C21.97842.93251.09633.91651.09571.09573.07133.0713
C31.97842.93253.91651.09633.07133.07131.09571.0957
H42.53061.09633.91654.82071.79251.79254.09224.0922
H52.53063.91651.09634.82074.09224.09221.79251.7925
H62.56531.09573.07131.79254.09221.80103.33542.8073
H72.56531.09573.07131.79254.09221.80102.80733.3354
H82.56533.07131.09574.09221.79253.33542.80731.8010
H92.56533.07131.09574.09221.79252.80733.33541.8010

picture of dimethylselenide state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
Se1 C2 H4 107.269 Se1 C2 H6 109.766
Se1 C2 H7 109.766 Se1 C3 H5 107.269
Se1 C3 H8 109.766 Se1 C3 H9 109.766
C2 Se1 C3 95.654 H4 C2 H6 109.718
H4 C2 H7 109.718 H5 C3 H8 109.718
H5 C3 H9 109.718 H6 C2 H7 110.544
H8 C3 H9 110.544
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability