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 CH3CHOHCH3 (Isopropyl alcohol)

using model chemistry: MP2/CEP-31G

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C1 1A
Energy calculated at MP2/CEP-31G
 hartrees
Energy at 0K-37.082278
Energy at 298.15K-37.091151
HF Energy-36.725925
Nuclear repulsion energy77.104890
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 MP2/CEP-31G
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 3670 3546 6.51      
2 A 3158 3051 58.02      
3 A 3146 3040 94.18      
4 A 3140 3034 12.24      
5 A 3122 3017 56.19      
6 A 3044 2941 49.07      
7 A 3038 2936 48.25      
8 A 3024 2922 35.67      
9 A 1534 1482 10.89      
10 A 1523 1472 4.98      
11 A 1515 1464 0.38      
12 A 1510 1459 1.15      
13 A 1459 1410 12.06      
14 A 1445 1396 21.31      
15 A 1419 1372 7.36      
16 A 1374 1328 13.29      
17 A 1277 1234 30.28      
18 A 1213 1172 33.54      
19 A 1148 1109 23.99      
20 A 1099 1062 29.18      
21 A 977 944 0.02      
22 A 955 923 0.96      
23 A 940 908 42.15      
24 A 799 772 11.18      
25 A 465 449 10.30      
26 A 393 380 12.20      
27 A 351 339 6.06      
28 A 299 289 164.06      
29 A 255 247 7.45      
30 A 200 193 9.20      

Unscaled Zero Point Vibrational Energy (zpe) 23744.7 cm-1
Scaled (by 0.9663) Zero Point Vibrational Energy (zpe) 22944.5 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 MP2/CEP-31G
ABC
0.27184 0.25417 0.15020

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2/CEP-31G

Point Group is C1

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -0.000 0.017 0.388
C2 -1.271 -0.745 -0.111
C3 1.329 -0.631 -0.094
O4 0.029 1.415 -0.172
H5 -0.011 0.083 1.502
H6 -2.202 -0.236 0.226
H7 -1.271 -0.787 -1.221
H8 -1.283 -1.784 0.288
H9 2.193 -0.034 0.262
H10 1.416 -1.668 0.297
H11 1.349 -0.659 -1.204
H12 -0.766 1.921 0.128

Atom - Atom Distances (Å)
  C1 C2 C3 O4 H5 H6 H7 H8 H9 H10 H11 H12
C11.56361.55461.50651.11592.22172.20222.21322.19732.20282.19312.0688
C21.56362.60252.52232.20791.11271.11061.11283.55602.87092.84042.7241
C31.55462.60252.42462.20263.56652.83792.88041.10881.11191.11023.3085
O41.50652.52232.42462.13922.80372.76443.48822.64013.41282.66590.9890
H51.11592.20792.20262.13922.55463.12372.56472.53162.56033.11782.4152
H62.22171.11273.56652.80372.55461.80631.80114.39923.89163.85092.5929
H72.20221.11062.83792.76443.12371.80631.80823.84273.21002.62363.0674
H82.21321.11282.88043.48822.56471.80111.80823.89152.70213.22783.7443
H92.19733.55601.10882.64012.53164.39923.84273.89151.80871.80293.5490
H102.20282.87091.11193.41282.56033.89163.21002.70211.80871.80974.2035
H112.19312.84041.11022.66593.11783.85092.62363.22781.80291.80973.5918
H122.06882.72413.30850.98902.41522.59293.06743.74433.54904.20353.5918

picture of Isopropyl alcohol state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 H6 111.098 C1 C2 H7 109.709
C1 C2 H8 110.432 C1 C3 H9 110.049
C1 C3 H10 110.295 C1 C3 H11 109.640
C1 O4 H12 110.268 C2 C1 C3 113.145
C2 C1 O4 110.467 C2 C1 H5 109.842
C3 C1 O4 104.748 C3 C1 H5 110.045
O4 C1 H5 108.400 H6 C2 H7 108.663
H6 C2 H8 108.048 H7 C2 H8 108.831
H9 C3 H10 109.079 H9 C3 H11 108.682
H10 C3 H11 109.063
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability