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All results from a given calculation for CH3SeCH3 (dimethylselenide)

using model chemistry: CCD/6-31+G**

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/6-31+G**
 hartrees
Energy at 0K-2477.286495
Energy at 298.15K-2477.290609
HF Energy-2476.830663
Nuclear repulsion energy186.300201
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/6-31+G**
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 3234 3048 10.22      
2 A1 3122 2942 27.24      
3 A1 1532 1444 0.40      
4 A1 1400 1319 4.78      
5 A1 1029 970 17.58      
6 A1 606 571 0.19      
7 A1 214 202 0.00      
8 A2 3227 3041 0.00      
9 A2 1512 1425 0.00      
10 A2 950 895 0.00      
11 A2 141 133 0.00      
12 B1 3221 3035 16.60      
13 B1 1522 1435 11.99      
14 B1 982 925 7.87      
15 B1 158 148 0.24      
16 B2 3235 3048 5.33      
17 B2 3125 2945 24.98      
18 B2 1525 1437 13.77      
19 B2 1375 1296 10.37      
20 B2 909 856 0.00      
21 B2 618 583 0.84      

Unscaled Zero Point Vibrational Energy (zpe) 16818.2 cm-1
Scaled (by 0.9423) Zero Point Vibrational Energy (zpe) 15847.8 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/6-31+G**
ABC
0.37306 0.23054 0.15064

See section I.F.4 to change rotational constant units
Geometric Data calculated at CCD/6-31+G**

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
Se1 0.000 0.000 0.478
C2 0.000 1.451 -0.827
C3 0.000 -1.451 -0.827
H4 0.000 2.388 -0.274
H5 0.000 -2.388 -0.274
H6 0.891 1.399 -1.449
H7 -0.891 1.399 -1.449
H8 -0.891 -1.399 -1.449
H9 0.891 -1.399 -1.449

Atom - Atom Distances (Å)
  Se1 C2 C3 H4 H5 H6 H7 H8 H9
Se11.95151.95152.50372.50372.54262.54262.54262.5426
C21.95152.90221.08783.87881.08811.08813.05023.0502
C31.95152.90223.87881.08783.05023.05021.08811.0881
H42.50371.08783.87884.77611.77571.77574.06394.0639
H52.50373.87881.08784.77614.06394.06391.77571.7757
H62.54261.08813.05021.77574.06391.78203.31702.7977
H72.54261.08813.05021.77574.06391.78202.79773.3170
H82.54263.05021.08814.06391.77573.31702.79771.7820
H92.54263.05021.08814.06391.77572.79773.31701.7820

picture of dimethylselenide state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
Se1 C2 H4 107.502 Se1 C2 H6 110.290
Se1 C2 H7 110.290 Se1 C3 H5 107.502
Se1 C3 H8 110.290 Se1 C3 H9 110.290
C2 Se1 C3 96.075 H4 C2 H6 109.389
H4 C2 H7 109.389 H5 C3 H8 109.389
H5 C3 H9 109.389 H6 C2 H7 109.938
H8 C3 H9 109.938
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability