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All results from a given calculation for CH3CHCH3 (Isopropyl radical)

using model chemistry: QCISD(T)/aug-cc-pVDZ

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2 2A
Energy calculated at QCISD(T)/aug-cc-pVDZ
 hartrees
Energy at 0K-118.140884
Energy at 298.15K-118.146999
HF Energy-117.648225
Nuclear repulsion energy74.686051
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 QCISD(T)/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' 3168 3098        
2 A' 3094 3025        
3 A' 3029 2962        
4 A' 2952 2886        
5 A' 1467 1435        
6 A' 1460 1427        
7 A' 1389 1358        
8 A' 1167 1141        
9 A' 1014 992        
10 A' 886 866        
11 A' 394 385        
12 A' 333 325        
13 A' 141 137        
14 A" 3094 3026        
15 A" 3029 2962        
16 A" 2949 2883        
17 A" 1457 1425        
18 A" 1448 1416        
19 A" 1403 1372        
20 A" 1347 1317        
21 A" 1146 1120        
22 A" 924 904        
23 A" 920 900        
24 A" 105 103        

Unscaled Zero Point Vibrational Energy (zpe) 19157.0 cm-1
Scaled (by 0.9778) Zero Point Vibrational Energy (zpe) 18731.7 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 QCISD(T)/aug-cc-pVDZ
ABC
1.20835 0.27455 0.24484

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -0.013 0.551 0.000
C2 -0.013 -0.203 1.304
C3 -0.013 -0.203 -1.304
H4 0.279 1.609 0.000
H5 -0.789 -0.994 1.306
H6 -0.789 -0.994 -1.306
H7 0.961 -0.713 1.482
H8 -0.197 0.466 2.165
H9 0.961 -0.713 -1.482
H10 -0.197 0.466 -2.165

Atom - Atom Distances (Å)
  C1 C2 C3 H4 H5 H6 H7 H8 H9 H10
C11.50641.50641.09752.16722.16722.17792.17402.17792.1740
C21.50642.60892.25131.10852.83651.11401.10462.99583.5375
C31.50642.60892.25132.83651.10852.99583.53751.11401.1046
H41.09752.25132.25133.10223.10222.83792.49372.83792.4937
H52.16721.10852.83653.10222.61301.78111.79393.30433.8118
H62.16722.83651.10853.10222.61303.30433.81181.78111.7939
H72.17791.11402.99582.83791.78113.30431.78752.96464.0036
H82.17401.10463.53752.49371.79393.81181.78754.00364.3291
H92.17792.99581.11402.83793.30431.78112.96464.00361.7875
H102.17403.53751.10462.49373.81181.79394.00364.32911.7875

picture of Isopropyl radical state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 H5 111.035 C1 C2 H7 111.550
C1 C2 H8 111.817 C1 C3 H6 111.035
C1 C3 H9 111.550 C1 C3 H10 111.817
C2 C1 C3 119.971 C2 C1 H4 118.832
C3 C1 H4 118.832 H5 C2 H7 106.532
H5 C2 H8 108.310 H6 C3 H9 106.532
H6 C3 H10 108.310 H7 C2 H8 107.358
H9 C3 H10 107.358
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability