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 CH3CHClCH3 (Propane, 2-chloro-)

using model chemistry: QCISD/3-21G

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at QCISD/3-21G
 hartrees
Energy at 0K-574.706784
Energy at 298.15K-574.714477
HF Energy-574.337058
Nuclear repulsion energy161.610005
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/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 A' 3139 3042 22.44      
2 A' 3114 3018 5.95      
3 A' 3097 3001 13.46      
4 A' 3031 2938 16.72      
5 A' 1580 1531 10.10      
6 A' 1570 1521 6.77      
7 A' 1488 1442 5.98      
8 A' 1305 1264 39.16      
9 A' 1230 1192 24.48      
10 A' 1103 1069 8.06      
11 A' 875 848 9.24      
12 A' 577 560 26.49      
13 A' 417 404 2.01      
14 A' 332 322 2.70      
15 A' 273 265 0.15      
16 A" 3119 3023 9.85      
17 A" 3095 3000 3.60      
18 A" 3027 2934 6.83      
19 A" 1563 1515 1.36      
20 A" 1558 1510 2.57      
21 A" 1473 1428 11.33      
22 A" 1405 1362 1.98      
23 A" 1149 1114 4.07      
24 A" 1001 970 2.36      
25 A" 976 946 0.06      
26 A" 312 303 1.83      
27 A" 254 246 0.05      

Unscaled Zero Point Vibrational Energy (zpe) 21032.1 cm-1
Scaled (by 0.9692) Zero Point Vibrational Energy (zpe) 20384.3 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/3-21G
ABC
0.26158 0.14062 0.10048

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
Cl1 -0.979 1.009 0.000
C2 0.633 -0.062 0.000
C3 0.633 -0.901 1.287
C4 0.633 -0.901 -1.287
H5 1.429 0.688 0.000
H6 1.558 -1.497 1.326
H7 1.558 -1.497 -1.326
H8 0.584 -0.257 2.174
H9 0.584 -0.257 -2.174
H10 -0.230 -1.580 1.291
H11 -0.230 -1.580 -1.291

Atom - Atom Distances (Å)
  Cl1 C2 C3 C4 H5 H6 H7 H8 H9 H10 H11
Cl11.93522.81112.81112.42903.80473.80472.96202.96202.98882.9888
C21.93521.53611.53611.09312.16202.16202.18312.18312.17172.1717
C32.81111.53612.57342.19371.10112.83541.09703.52011.09792.8018
C42.81111.53612.57342.19372.83541.10113.52011.09702.80181.0979
H52.42901.09312.19372.19372.55892.55892.51622.51623.09193.0919
H63.80472.16201.10112.83542.55892.65291.78943.83871.79003.1708
H73.80472.16202.83541.10112.55892.65293.83871.78943.17081.7900
H82.96202.18311.09703.52012.51621.78943.83874.34761.78653.7970
H92.96202.18313.52011.09702.51623.83871.78944.34763.79701.7865
H102.98882.17171.09792.80183.09191.79003.17081.78653.79702.5820
H112.98882.17172.80181.09793.09193.17081.79003.79701.78652.5820

picture of Propane, 2-chloro- state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
Cl1 C2 C3 107.597 Cl1 C2 C4 107.597
Cl1 C3 H5 56.459 C2 C3 H6 109.014
C2 C3 H8 110.910 C2 C3 H10 109.952
C2 C4 H7 109.014 C2 C4 H9 110.910
C2 C4 H11 109.952 C3 C2 C4 113.778
C3 C2 H5 111.995 C4 C2 H5 111.995
H6 C3 H8 108.992 H6 C3 H10 108.981
H7 C4 H9 108.992 H7 C4 H11 108.981
H8 C3 H10 108.960 H9 C4 H11 108.960
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability