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 CH2CHCH2CH3 (1-Butene)

using model chemistry: PBEPBE/cc-pVTZ

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C1 1A
Energy calculated at PBEPBE/cc-pVTZ
 hartrees
Energy at 0K-157.044706
Energy at 298.15K-157.052550
HF Energy-157.044706
Nuclear repulsion energy116.774995
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 PBEPBE/cc-pVTZ
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 3144 3122 17.82      
2 A 3061 3040 5.16      
3 A 3045 3024 39.17      
4 A 3041 3020 27.47      
5 A 3034 3013 23.01      
6 A 2989 2968 8.35      
7 A 2966 2946 30.56      
8 A 2943 2923 22.97      
9 A 1660 1649 13.27      
10 A 1455 1445 5.58      
11 A 1446 1436 6.55      
12 A 1427 1417 4.39      
13 A 1405 1395 1.80      
14 A 1354 1345 1.99      
15 A 1294 1285 1.20      
16 A 1275 1266 1.45      
17 A 1246 1237 0.12      
18 A 1162 1154 0.38      
19 A 1056 1049 3.22      
20 A 1008 1001 3.26      
21 A 994 987 10.14      
22 A 954 948 2.76      
23 A 903 897 39.74      
24 A 840 834 2.82      
25 A 771 765 3.54      
26 A 636 631 9.90      
27 A 420 417 0.80      
28 A 304 302 0.51      
29 A 225 223 0.02      
30 A 106 105 0.08      

Unscaled Zero Point Vibrational Energy (zpe) 23080.5 cm-1
Scaled (by 0.9931) Zero Point Vibrational Energy (zpe) 22921.2 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 PBEPBE/cc-pVTZ
ABC
0.75460 0.13761 0.13442

See section I.F.4 to change rotational constant units
Geometric Data calculated at PBEPBE/cc-pVTZ

Point Group is C1

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 1.727 -0.244 -0.296
C2 0.539 0.519 0.310
C3 -0.719 -0.298 0.337
C4 -1.861 0.019 -0.278
H5 -0.665 -1.235 0.905
H6 1.526 -0.516 -1.341
H7 2.642 0.364 -0.269
H8 1.926 -1.173 0.258
H9 0.798 0.816 1.341
H10 0.361 1.449 -0.251
H11 -1.960 0.941 -0.857
H12 -2.741 -0.624 -0.225

Atom - Atom Distances (Å)
  C1 C2 C3 C4 H5 H6 H7 H8 H9 H10 H11 H12
C11.53612.52743.59822.85401.09881.09901.09982.15992.17613.91284.4843
C21.53611.50082.52152.20902.18412.18692.18821.10381.10092.79003.5141
C32.52741.50081.33511.09662.81163.47942.78732.13332.13682.12102.1229
C43.59822.52151.33512.09793.59074.51694.00663.21332.64261.09281.0907
H52.85402.20901.09662.09793.21903.85672.67132.55643.09713.08412.4402
H61.09882.18412.81163.59073.21901.77981.77483.08182.53123.80854.4117
H71.09902.18693.47944.51693.85671.77981.77592.49022.52654.67495.4729
H81.09982.18822.78734.00662.67131.77481.77592.52983.09604.56174.7234
H92.15991.10382.13333.21332.55643.08182.49022.52981.76853.52874.1284
H102.17611.10092.13682.64263.09712.53122.52653.09601.76852.45163.7306
H113.91282.79002.12101.09283.08413.80854.67494.56173.52872.45161.8596
H124.48433.51412.12291.09072.44024.41175.47294.72344.12843.73061.8596

picture of 1-Butene state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 C3 112.654 C1 C2 H9 108.706
C1 C2 H10 110.127 C2 C1 H6 110.887
C2 C1 H7 111.099 C2 C1 H8 111.151
C2 C3 C4 125.421 C2 C3 H5 115.653
C3 C2 H9 109.024 C3 C2 H10 109.469
C3 C4 H11 121.429 C3 C4 H12 121.788
C4 C3 H5 118.921 H6 C1 H7 108.158
H6 C1 H8 107.660 H7 C1 H8 107.737
H9 C2 H10 106.672 H11 C4 H12 116.783
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at PBEPBE/cc-pVTZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.284      
2 C -0.125      
3 C -0.076      
4 C -0.258      
5 H 0.091      
6 H 0.098      
7 H 0.094      
8 H 0.091      
9 H 0.090      
10 H 0.078      
11 H 0.096      
12 H 0.105      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.395 0.053 0.109 0.413
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -26.856 0.505 0.789
y 0.505 -26.606 -1.166
z 0.789 -1.166 -27.532
Traceless
 xyz
x 0.213 0.505 0.789
y 0.505 0.588 -1.166
z 0.789 -1.166 -0.801
Polar
3z2-r2-1.602
x2-y2-0.250
xy0.505
xz0.789
yz-1.166


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 9.739 -0.069 0.774
y -0.069 6.707 -0.457
z 0.774 -0.457 6.325


<r2> (average value of r2) Å2
<r2> 103.471
(<r2>)1/2 10.172