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 CH3CHCHCH3 (2-Butene, (E)-)

using model chemistry: BLYP/aug-cc-pVDZ

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2h 1Ag
Energy calculated at BLYP/aug-cc-pVDZ
 hartrees
Energy at 0K-157.138300
Energy at 298.15K-157.145945
Nuclear repulsion energy114.603171
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 BLYP/aug-cc-pVDZ
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 3040 3034 0.00      
2 A 3018 3013 0.00      
3 A 2936 2930 0.00      
4 A 1674 1671 0.00      
5 A 1424 1421 0.00      
6 A 1352 1349 0.00      
7 A 1292 1289 0.00      
8 A 1127 1124 0.00      
9 A 849 847 0.00      
10 A 489 488 0.00      
11 A 2977 2972 47.36      
12 A 1411 1409 11.35      
13 A 1024 1022 2.86      
14 A 954 952 34.40      
15 A 239 239 3.75      
16 A 177 177 1.12      
17 A 2978 2972 0.00      
18 A 1411 1409 0.00      
19 A 1021 1019 0.00      
20 A 730 728 0.00      
21 A 230 230 0.00      
22 A 3048 3042 79.70      
23 A 3017 3011 22.07      
24 A 2935 2930 82.79      
25 A 1433 1430 17.54      
26 A 1352 1349 3.39      
27 A 1288 1286 6.22      
28 A 1043 1041 4.63      
29 A 953 951 13.05      
30 A 279 278 1.21      

Unscaled Zero Point Vibrational Energy (zpe) 22850.5 cm-1
Scaled (by 0.9981) Zero Point Vibrational Energy (zpe) 22807.1 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 BLYP/aug-cc-pVDZ
ABC
1.13902 0.12165 0.11467

See section I.F.4 to change rotational constant units
Geometric Data calculated at BLYP/aug-cc-pVDZ

Point Group is C2h

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.327 0.590 0.000
C2 -0.327 -0.590 0.000
C3 -0.327 1.952 0.000
C4 0.327 -1.952 0.000
H5 1.430 0.581 0.000
H6 -1.430 -0.581 0.000
H7 -1.430 1.871 0.000
H8 1.430 -1.871 0.000
H9 -0.025 2.543 0.888
H10 -0.025 2.543 -0.888
H11 0.025 -2.543 0.888
H12 0.025 -2.543 -0.888

Atom - Atom Distances (Å)
  C1 C2 C3 C4 H5 H6 H7 H8 H9 H10 H11 H12
C11.34861.51162.54201.10332.11162.17422.69602.17482.17483.27043.2704
C21.34862.54201.51162.11161.10332.69602.17423.27043.27042.17482.1748
C31.51162.54203.95912.22922.76311.10574.20721.10891.10894.59604.5960
C42.54201.51163.95912.76312.22924.20721.10574.59604.59601.10891.1089
H51.10332.11162.22922.76313.08773.13742.45152.59972.59973.53903.5390
H62.11161.10332.76312.22923.08772.45153.13743.53903.53902.59972.5997
H72.17422.69601.10574.20723.13742.45154.70871.79291.79294.73154.7315
H82.69602.17424.20721.10572.45153.13744.70874.73154.73151.79291.7929
H92.17483.27041.10894.59602.59973.53901.79294.73151.77695.08675.3881
H102.17483.27041.10894.59602.59973.53901.79294.73151.77695.38815.0867
H113.27042.17484.59601.10893.53902.59974.73151.79295.08675.38811.7769
H123.27042.17484.59601.10893.53902.59974.73151.79295.38815.08671.7769

picture of 2-Butene, (E)- state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 C4 125.338 C1 C2 H6 118.564
C1 C3 H7 111.401 C1 C3 H9 111.258
C1 C3 H10 111.258 C2 C1 C3 125.338
C2 C1 H5 118.564 C2 C4 H8 111.401
C2 C4 H11 111.258 C2 C4 H12 111.258
C3 C1 H5 116.098 C4 C2 H6 116.098
H7 C3 H9 108.115 H7 C3 H10 108.115
H8 C4 H11 108.115 H8 C4 H12 108.115
H9 C3 H10 106.490 H11 C4 H12 106.490
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at BLYP/aug-cc-pVDZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 1.146      
2 C 1.146      
3 C 0.630      
4 C 0.630      
5 H -0.913      
6 H -0.913      
7 H -0.417      
8 H -0.417      
9 H -0.223      
10 H -0.223      
11 H -0.223      
12 H -0.223      


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 -26.565 0.362 0.000
y 0.362 -26.328 0.000
z 0.000 0.000 -28.692
Traceless
 xyz
x 0.945 0.362 0.000
y 0.362 1.300 0.000
z 0.000 0.000 -2.246
Polar
3z2-r2-4.491
x2-y2-0.237
xy0.362
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 7.638 0.155 0.000
y 0.155 11.289 0.000
z 0.000 0.000 6.527


<r2> (average value of r2) Å2
<r2> 114.350
(<r2>)1/2 10.693