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: B1B95/6-31G(2df,p)

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C1 1A
Energy calculated at B1B95/6-31G(2df,p)
 hartrees
Energy at 0K-618.010834
Energy at 298.15K-618.020701
Nuclear repulsion energy234.566215
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 B1B95/6-31G(2df,p)
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 3162 3029 14.39      
2 A 3155 3021 18.99      
3 A 3141 3008 22.38      
4 A 3138 3005 23.09      
5 A 3103 2971 14.68      
6 A 3086 2955 0.71      
7 A 3059 2930 17.50      
8 A 3058 2928 22.89      
9 A 3042 2913 17.92      
10 A 1501 1437 5.74      
11 A 1492 1429 6.79      
12 A 1488 1425 1.42      
13 A 1477 1415 6.94      
14 A 1463 1401 0.66      
15 A 1408 1348 4.03      
16 A 1400 1341 5.48      
17 A 1386 1327 0.29      
18 A 1315 1260 11.51      
19 A 1308 1252 7.76      
20 A 1254 1201 15.09      
21 A 1177 1128 8.41      
22 A 1136 1088 2.48      
23 A 1090 1044 2.54      
24 A 1050 1006 2.88      
25 A 1000 958 9.72      
26 A 966 925 5.78      
27 A 858 822 9.48      
28 A 792 758 10.33      
29 A 629 602 22.32      
30 A 455 436 1.04      
31 A 385 369 2.08      
32 A 318 304 1.20      
33 A 246 236 0.13      
34 A 233 224 0.72      
35 A 223 213 0.42      
36 A 116 111 0.15      

Unscaled Zero Point Vibrational Energy (zpe) 27053.5 cm-1
Scaled (by 0.9577) Zero Point Vibrational Energy (zpe) 25909.1 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 B1B95/6-31G(2df,p)
ABC
0.15410 0.10489 0.06756

See section I.F.4 to change rotational constant units
Geometric Data calculated at B1B95/6-31G(2df,p)

Point Group is C1

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -1.347 1.436 -0.010
H2 -1.512 1.443 -1.089
H3 -2.291 1.200 0.481
H4 -1.037 2.439 0.298
C5 -0.272 0.437 0.359
H6 -0.139 0.401 1.442
Cl7 -0.851 -1.225 -0.070
C8 1.059 0.711 -0.320
H9 1.319 1.752 -0.092
H10 0.916 0.655 -1.403
C11 2.189 -0.208 0.116
H12 2.358 -0.141 1.194
H13 1.960 -1.247 -0.124
H14 3.121 0.060 -0.385

Atom - Atom Distances (Å)
  C1 H2 H3 H4 C5 H6 Cl7 C8 H9 H10 C11 H12 H13 H14
C11.09181.09011.09381.51372.15452.70742.53242.68542.76953.90164.20294.26064.6905
H21.09181.77011.77272.15593.06292.93132.78223.01682.57144.22784.76434.49724.8864
H31.09011.77011.77262.16202.48872.87303.47923.69623.75894.71004.89044.94245.5984
H41.09381.77271.77262.14382.50383.68672.78582.48413.14434.17644.35684.76944.8387
C51.51372.15592.16202.14381.09221.81161.51882.11202.13582.55532.81872.83763.4939
H62.15453.06292.48872.50381.09222.33202.15312.51063.04522.74752.56673.09473.7527
Cl72.70742.93132.87303.68671.81162.33202.73123.68372.90403.21133.61532.81234.1873
C82.53242.78223.47922.78581.51882.15312.73121.09671.09461.51962.16852.16422.1632
H92.68543.01683.69622.48412.11202.51063.68371.09671.75622.15442.51373.06732.4896
H102.76952.57143.75893.14432.13583.04522.90401.09461.75622.16173.07562.51902.5013
C113.90164.22784.71004.17642.55532.74753.21131.51962.15442.16171.09341.09121.0916
H124.20294.76434.89044.35682.81872.56673.61532.16852.51373.07561.09341.76621.7653
H134.26064.49724.94244.76942.83763.09472.81232.16423.06732.51901.09121.76621.7679
H144.69054.88645.59844.83873.49393.75274.18732.16322.48962.50131.09161.76531.7679

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 110.497 C1 C5 Cl7 108.687
C1 C5 C8 113.252 H2 C1 H3 108.435
H2 C1 H4 108.398 H2 C1 C5 110.634
H3 C1 H4 108.519 H3 C1 C5 111.226
H4 C1 C5 109.556 C5 C8 H9 106.589
C5 C8 H10 108.538 C5 C8 C11 114.492
H6 C5 Cl7 104.091 H6 C5 C8 110.030
Cl7 C5 C8 109.878 C8 C11 H12 111.128
C8 C11 H13 110.917 C8 C11 H14 110.810
H9 C8 H10 106.537 H9 C8 C11 109.805
H10 C8 C11 110.514 H12 C11 H13 107.894
H12 C11 H14 107.782 H13 C11 H14 108.178
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B1B95/6-31G(2df,p) Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.404      
2 H 0.145      
3 H 0.147      
4 H 0.132      
5 C -0.013      
6 H 0.139      
7 Cl -0.196      
8 C -0.193      
9 H 0.118      
10 H 0.129      
11 C -0.411      
12 H 0.125      
13 H 0.153      
14 H 0.127      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.770 2.013 0.354 2.185
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -39.201 -1.213 -0.304
y -1.213 -39.688 0.344
z -0.304 0.344 -38.541
Traceless
 xyz
x -0.086 -1.213 -0.304
y -1.213 -0.817 0.344
z -0.304 0.344 0.903
Polar
3z2-r21.807
x2-y20.487
xy-1.213
xz-0.304
yz0.344


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 8.884 0.187 0.039
y 0.187 9.038 0.136
z 0.039 0.136 7.046


<r2> (average value of r2) Å2
<r2> 179.660
(<r2>)1/2 13.404