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 CH3CH2CH2CH3 (Butane)

using model chemistry: B2PLYP/Def2TZVPP

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes Anti 1Ag
Energy calculated at B2PLYP/Def2TZVPP
 hartrees
Energy at 0K-158.351214
Energy at 298.15K-158.361847
HF Energy-158.118574
Nuclear repulsion energy130.859067
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 B2PLYP/Def2TZVPP
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
(Å4/u)
Dep P Dep U
Au 122 122 0.01      
Au 221 221 0.00      
Bu 258 258 0.01      
Bg 259 259 0.00      
Ag 426 426 0.00      
Au 742 742 2.98      
Bg 817 817 0.00      
Ag 849 849 0.00      
Au 969 969 0.73      
Bu 986 986 5.07      
Bu 1029 1029 0.01      
Ag 1078 1078 0.00      
Ag 1179 1179 0.00      
Bg 1220 1220 0.00      
Au 1300 1300 0.23      
Bu 1332 1332 2.66      
Bg 1343 1343 0.00      
Ag 1403 1403 0.00      
Ag 1422 1422 0.00      
Bu 1424 1424 5.00      
Ag 1499 1499 0.00      
Bu 1504 1504 1.66      
Bg 1512 1512 0.00      
Au 1513 1513 13.99      
Ag 1518 1518 0.00      
Bu 1524 1524 8.23      
Ag 3032 3032 0.00      
Bu 3040 3040 39.67      
Bu 3048 3048 81.73      
Ag 3048 3048 0.00      
Bg 3055 3055 0.00      
Au 3078 3078 19.29      
Bg 3113 3113 0.00      
Au 3117 3117 106.37      
Ag 3119 3119 0.00      
Bu 3120 3120 74.08      

Unscaled Zero Point Vibrational Energy (zpe) 29109.4 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 29109.4 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 B2PLYP/Def2TZVPP
ABC
0.78732 0.12148 0.11408

See section I.F.4 to change rotational constant units
Geometric Data calculated at B2PLYP/Def2TZVPP

Point Group is C2h

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -0.421 0.637 0.000
C2 0.421 -0.637 0.000
C3 0.421 1.909 0.000
C4 -0.421 -1.909 0.000
H5 -1.077 0.631 0.874
H6 -1.077 0.631 -0.874
H7 1.077 -0.631 0.874
H8 1.077 -0.631 -0.874
H9 -0.203 2.802 0.000
H10 1.064 1.951 0.880
H11 1.064 1.951 -0.880
H12 0.203 -2.802 0.000
H13 -1.064 -1.951 0.880
H14 -1.064 -1.951 -0.880

Atom - Atom Distances (Å)
  C1 C2 C3 C4 H5 H6 H7 H8 H9 H10 H11 H12 H13 H14
C11.52641.52562.54521.09291.09292.14852.14852.17642.16972.16973.49462.80792.8079
C21.52642.54521.52562.14852.14851.09291.09293.49462.80792.80792.17642.16972.1697
C31.52562.54523.90922.15402.15402.76522.76521.08941.09041.09044.71574.22834.2283
C42.54521.52563.90922.76522.76522.15402.15404.71574.22834.22831.08941.09041.0904
H51.09292.14852.15402.76521.74802.49713.04812.49802.51503.06623.76692.58283.1221
H61.09292.14852.15402.76521.74803.04812.49712.49803.06622.51503.76693.12212.5828
H72.14851.09292.76522.15402.49713.04811.74803.76692.58283.12212.49802.51503.0662
H82.14851.09292.76522.15403.04812.49711.74803.76693.12212.58282.49803.06622.5150
H92.17643.49461.08944.71572.49802.49803.76693.76691.76101.76105.61864.91024.9102
H102.16972.80791.09044.22832.51503.06622.58283.12211.76101.75994.91024.44494.7806
H112.16972.80791.09044.22833.06622.51503.12212.58281.76101.75994.91024.78064.4449
H123.49462.17644.71571.08943.76693.76692.49802.49805.61864.91024.91021.76101.7610
H132.80792.16974.22831.09042.58283.12212.51503.06624.91024.44494.78061.76101.7599
H142.80792.16974.22831.09043.12212.58283.06622.51504.91024.78064.44491.76101.7599

picture of Butane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 C4 113.015 C1 C2 H7 109.105
C1 C2 H8 109.105 C1 C3 H9 111.575
C1 C3 H11 110.972 C1 C3 H12 30.847
C2 C1 C3 113.015 C2 C1 H5 109.105
C2 C1 H6 109.105 C2 C4 H10 17.243
C2 C4 H13 110.972 C2 C4 H14 110.972
C3 C1 H5 109.590 C3 C1 H6 109.590
C4 C2 H7 109.590 C4 C2 H8 109.590
H5 C1 H6 106.206 H7 C2 H8 106.206
H9 C3 H11 107.775 H9 C3 H12 142.422
H10 C4 H13 94.285 H10 C4 H14 114.242
H11 C3 H12 93.807 H13 C4 H14 107.600
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B2PLYP/Def2TZVPP Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.082      
2 C -0.082      
3 C -0.256      
4 C -0.256      
5 H 0.054      
6 H 0.054      
7 H 0.054      
8 H 0.054      
9 H 0.083      
10 H 0.074      
11 H 0.074      
12 H 0.083      
13 H 0.074      
14 H 0.074      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.000 0.000 0.000 0.000
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -29.090 -0.458 0.000
y -0.458 -29.531 0.000
z 0.000 0.000 -28.238
Traceless
 xyz
x -0.206 -0.458 0.000
y -0.458 -0.867 0.000
z 0.000 0.000 1.073
Polar
3z2-r22.146
x2-y20.440
xy-0.458
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 7.249 0.290 0.000
y 0.290 8.688 0.000
z 0.000 0.000 6.884


<r2> (average value of r2) Å2
<r2> 118.848
(<r2>)1/2 10.902