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, (Z)-)

using model chemistry: HF/daug-cc-pVTZ

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 1A1
Energy calculated at HF/daug-cc-pVTZ
 hartrees
Energy at 0K-156.167208
Energy at 298.15K-156.175151
HF Energy-156.167208
Nuclear repulsion energy118.038646
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 HF/daug-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 A1 3292 2978 56.27      
2 A1 3260 2949 19.35      
3 A1 3155 2854 12.30      
4 A1 1868 1690 6.46      
5 A1 1612 1458 4.83      
6 A1 1543 1396 1.77      
7 A1 1390 1258 0.01      
8 A1 1105 1000 0.82      
9 A1 913 825 0.67      
10 A1 308 278 0.00      
11 A2 3190 2885 0.00      
12 A2 1599 1446 0.00      
13 A2 1176 1064 0.00      
14 A2 1106 1000 0.00      
15 A2 434 393 0.00      
16 A2 138 125 0.00      
17 B1 3190 2886 62.41      
18 B1 1604 1451 11.16      
19 B1 1165 1054 9.81      
20 B1 765 692 42.31      
21 B1 139 126 0.88      
22 B2 3264 2953 20.59      
23 B2 3238 2929 9.28      
24 B2 3153 2852 64.43      
25 B2 1606 1453 4.27      
26 B2 1564 1414 4.76      
27 B2 1508 1364 5.51      
28 B2 1253 1133 0.07      
29 B2 1032 934 11.69      
30 B2 606 548 5.41      

Unscaled Zero Point Vibrational Energy (zpe) 25087.3 cm-1
Scaled (by 0.9046) Zero Point Vibrational Energy (zpe) 22694.0 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 HF/daug-cc-pVTZ
ABC
0.55331 0.16956 0.13622

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

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.660 0.658
C2 0.000 -0.660 0.658
C3 0.000 1.591 -0.520
C4 0.000 -1.591 -0.520
H5 0.000 1.148 1.618
H6 0.000 -1.148 1.618
H7 0.000 1.074 -1.468
H8 0.000 -1.074 -1.468
H9 -0.872 2.237 -0.490
H10 0.872 2.237 -0.490
H11 0.872 -2.237 -0.490
H12 -0.872 -2.237 -0.490

Atom - Atom Distances (Å)
  C1 C2 C3 C4 H5 H6 H7 H8 H9 H10 H11 H12
C11.31931.50132.54021.07722.04702.16562.74312.13642.13643.23503.2350
C21.31932.54021.50132.04701.07722.74312.16563.23503.23502.13642.1364
C31.50132.54023.18232.18283.47471.07982.82911.08531.08533.92593.9259
C42.54021.50133.18233.47472.18282.82911.07983.92593.92591.08531.0853
H51.07722.04702.18283.47472.29673.08643.80272.52722.52724.08174.0817
H62.04701.07723.47472.18282.29673.80273.08644.08174.08172.52722.5272
H72.16562.74311.07982.82913.08643.80272.14871.75141.75143.56073.5607
H82.74312.16562.82911.07983.80273.08642.14873.56073.56071.75141.7514
H92.13643.23501.08533.92592.52724.08171.75143.56071.74414.80114.4731
H102.13643.23501.08533.92592.52724.08171.75143.56071.74414.47314.8011
H113.23502.13643.92591.08534.08172.52723.56071.75144.80114.47311.7441
H123.23502.13643.92591.08534.08172.52723.56071.75144.47314.80111.7441

picture of 2-Butene, (Z)- state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 C4 128.350 C1 C2 H6 116.980
C1 C3 H7 113.056 C1 C3 H9 110.334
C1 C3 H10 110.334 C2 C1 C3 128.350
C2 C1 H5 116.980 C2 C4 H8 113.056
C2 C4 H11 110.334 C2 C4 H12 110.334
C3 C1 H5 114.669 C4 C2 H6 114.669
H7 C3 H9 107.977 H7 C3 H10 107.977
H8 C4 H11 107.977 H8 C4 H12 107.977
H9 C3 H10 106.934 H11 C4 H12 106.934
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HF/daug-cc-pVTZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.206      
2 C -0.206      
3 C -1.199      
4 C -1.199      
5 H 0.571      
6 H 0.571      
7 H 0.306      
8 H 0.306      
9 H 0.264      
10 H 0.264      
11 H 0.264      
12 H 0.264      


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 -0.253 0.253
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -28.385 0.000 0.000
y 0.000 -25.282 0.000
z 0.000 0.000 -26.362
Traceless
 xyz
x -2.563 0.000 0.000
y 0.000 2.092 0.000
z 0.000 0.000 0.471
Polar
3z2-r20.942
x2-y2-3.103
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 5.945 0.000 0.000
y 0.000 9.632 0.000
z 0.000 0.000 6.819


<r2> (average value of r2) Å2
<r2> 99.196
(<r2>)1/2 9.960