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 CH3CHClCH2CH3 (Butane, 2-chloro-)

using model chemistry: B3PW91/6-31G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C1 1A
Energy calculated at B3PW91/6-31G*
 hartrees
Energy at 0K-617.948810
Energy at 298.15K-617.958686
Nuclear repulsion energy233.169351
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 B3PW91/6-31G*
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
(Å4/u)
Dep P Dep U
1 A 3162 3025 18.36      
2 A 3153 3017 22.10      
3 A 3140 3004 26.28      
4 A 3134 2999 30.58      
5 A 3107 2973 14.30      
6 A 3089 2955 1.89      
7 A 3062 2930 15.58      
8 A 3062 2929 30.06      
9 A 3043 2911 19.43      
10 A 1531 1465 6.92      
11 A 1523 1457 11.13      
12 A 1521 1455 0.72      
13 A 1511 1446 7.59      
14 A 1497 1433 0.82      
15 A 1438 1375 6.80      
16 A 1434 1372 5.95      
17 A 1411 1350 0.38      
18 A 1340 1282 18.07      
19 A 1333 1275 5.63      
20 A 1280 1224 14.49      
21 A 1191 1140 7.61      
22 A 1142 1093 2.70      
23 A 1108 1060 4.49      
24 A 1054 1008 1.84      
25 A 1015 971 11.29      
26 A 982 939 7.76      
27 A 862 825 9.63      
28 A 804 769 12.79      
29 A 621 594 25.51      
30 A 461 441 1.40      
31 A 390 373 2.50      
32 A 326 312 1.37      
33 A 254 243 0.20      
34 A 233 223 0.07      
35 A 215 206 1.20      
36 A 115 110 0.21      

Unscaled Zero Point Vibrational Energy (zpe) 27270.9 cm-1
Scaled (by 0.9567) Zero Point Vibrational Energy (zpe) 26090.1 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 B3PW91/6-31G*
ABC
0.15254 0.10314 0.06657

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3PW91/6-31G*

Point Group is C1

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -1.325 1.466 -0.009
H2 -1.496 1.480 -1.091
H3 -2.275 1.248 0.487
H4 -0.994 2.464 0.302
C5 -0.265 0.442 0.357
H6 -0.132 0.406 1.444
Cl7 -0.884 -1.223 -0.069
C8 1.076 0.694 -0.323
H9 1.348 1.736 -0.098
H10 0.936 0.637 -1.410
C11 2.205 -0.232 0.118
H12 2.374 -0.165 1.199
H13 1.977 -1.275 -0.123
H14 3.141 0.035 -0.384

Atom - Atom Distances (Å)
  C1 H2 H3 H4 C5 H6 Cl7 C8 H9 H10 C11 H12 H13 H14
C11.09501.09361.09711.51912.15832.72502.54192.68862.78623.91914.21994.29304.7050
H21.09501.77491.77732.16603.07222.95382.79723.02322.59404.25304.78864.53774.9084
H31.09361.77491.77612.17022.49382.88993.49223.70263.77964.73264.91164.98225.6185
H41.09711.77731.77612.15072.50673.70722.79442.48513.16144.18764.36634.79484.8447
C51.51912.16602.17022.15071.09501.82641.52452.11762.14542.57082.83582.86423.5091
H62.15833.07222.49382.50671.09502.34682.15912.51723.05542.76112.58193.11903.7667
Cl72.72502.95382.88993.70721.82642.34682.75323.70642.92693.24873.65272.86184.2284
C82.54192.79723.49222.79441.52452.15912.75321.10001.09761.52492.17702.17472.1684
H92.68863.02323.70262.48512.11762.51723.70641.10001.76032.15752.52023.07632.4882
H102.78622.59403.77963.16142.14543.05542.92691.09761.76032.16733.08512.52862.5053
C113.91914.25304.73264.18762.57082.76113.24871.52492.15752.16731.09671.09421.0953
H124.21994.78864.91164.36632.83582.58193.65272.17702.52023.08511.09671.77151.7702
H134.29304.53774.98224.79482.86423.11902.86182.17473.07632.52861.09421.77151.7715
H144.70504.90845.61854.84473.50913.76674.22842.16842.48822.50531.09531.77021.7715

picture of Butane, 2-chloro- state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C5 H6 110.248 C1 C5 Cl7 108.739
C1 C5 C8 113.260 H2 C1 H3 108.391
H2 C1 H4 108.348 H2 C1 C5 110.866
H3 C1 H4 108.339 H3 C1 C5 111.287
H4 C1 C5 109.526 C5 C8 H9 106.455
C5 C8 H10 108.712 C5 C8 C11 114.927
H6 C5 Cl7 104.079 H6 C5 C8 109.938
Cl7 C5 C8 110.174 C8 C11 H12 111.231
C8 C11 H13 111.193 C8 C11 H14 110.633
H9 C8 H10 106.452 H9 C8 C11 109.491
H10 C8 C11 110.405 H12 C11 H13 107.907
H12 C11 H14 107.718 H13 C11 H14 108.013
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3PW91/6-31G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.500     -0.470
2 H 0.189     0.139
3 H 0.193     0.146
4 H 0.176     0.137
5 C -0.243     0.087
6 H 0.209     0.105
7 Cl -0.096     -0.210
8 C -0.299     0.043
9 H 0.170     0.039
10 H 0.181     0.049
11 C -0.513     -0.347
12 H 0.166     0.087
13 H 0.195     0.096
14 H 0.172     0.100


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.862 2.101 0.371 2.301
CHELPG        
AIM        
ESP 0.874 2.169 0.420 2.376


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -39.355 -1.360 -0.314
y -1.360 -39.870 0.327
z -0.314 0.327 -38.710
Traceless
 xyz
x -0.065 -1.360 -0.314
y -1.360 -0.837 0.327
z -0.314 0.327 0.902
Polar
3z2-r21.804
x2-y20.515
xy-1.360
xz-0.314
yz0.327


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 0.000 0.000 0.000
y 0.000 0.000 0.000
z 0.000 0.000 0.000


<r2> (average value of r2) Å2
<r2> 181.934
(<r2>)1/2 13.488