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: B3LYPultrafine/cc-pVTZ

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2h 1Ag
Energy calculated at B3LYPultrafine/cc-pVTZ
 hartrees
Energy at 0K-157.289558
Energy at 298.15K-157.297311
HF Energy-157.289558
Nuclear repulsion energy116.003540
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 B3LYPultrafine/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 Ag 3108 3004 0.00      
2 Ag 3087 2984 0.00      
3 Ag 3011 2911 0.00      
4 Ag 1741 1683 0.00      
5 Ag 1490 1440 0.00      
6 Ag 1417 1370 0.00      
7 Ag 1338 1294 0.00      
8 Ag 1169 1130 0.00      
9 Ag 875 846 0.00      
10 Ag 503 486 0.00      
11 Au 3049 2948 47.89      
12 Au 1480 1431 12.39      
13 Au 1071 1035 1.30      
14 Au 1002 968 34.12      
15 Au 246 238 3.48      
16 Au 177 171 1.02      
17 Bg 3050 2948 0.00      
18 Bg 1481 1432 0.00      
19 Bg 1074 1038 0.00      
20 Bg 763 738 0.00      
21 Bg 230 223 0.00      
22 Bu 3117 3013 73.22      
23 Bu 3086 2983 19.77      
24 Bu 3011 2910 70.63      
25 Bu 1498 1448 18.18      
26 Bu 1415 1368 3.52      
27 Bu 1335 1291 4.94      
28 Bu 1074 1038 3.14      
29 Bu 991 958 14.63      
30 Bu 283 273 1.20      

Unscaled Zero Point Vibrational Energy (zpe) 23585.7 cm-1
Scaled (by 0.9667) Zero Point Vibrational Energy (zpe) 22800.3 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 B3LYPultrafine/cc-pVTZ
ABC
1.17092 0.12442 0.11731

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3LYPultrafine/cc-pVTZ

Point Group is C2h

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.323 0.580 0.000
C2 -0.323 -0.580 0.000
C3 -0.323 1.931 0.000
C4 0.323 -1.931 0.000
H5 1.411 0.570 0.000
H6 -1.411 -0.570 0.000
H7 -1.411 1.854 0.000
H8 1.411 -1.854 0.000
H9 -0.025 2.513 0.876
H10 -0.025 2.513 -0.876
H11 0.025 -2.513 0.876
H12 0.025 -2.513 -0.876

Atom - Atom Distances (Å)
  C1 C2 C3 C4 H5 H6 H7 H8 H9 H10 H11 H12
C11.32831.49762.51171.08762.08052.15152.66662.15082.15083.22933.2293
C21.32832.51171.49762.08051.08762.66662.15153.22933.22932.15082.1508
C31.49762.51173.91652.20432.72751.09044.16391.09351.09354.54374.5437
C42.51171.49763.91652.72752.20434.16391.09044.54374.54371.09351.0935
H51.08762.08052.20432.72753.04263.09992.42432.57002.57003.49223.4922
H62.08051.08762.72752.20433.04262.42433.09993.49223.49222.57002.5700
H72.15152.66661.09044.16393.09992.42434.66001.76731.76734.68044.6804
H82.66662.15154.16391.09042.42433.09994.66004.68044.68041.76731.7673
H92.15083.22931.09354.54372.57003.49221.76734.68041.75275.02715.3239
H102.15083.22931.09354.54372.57003.49221.76734.68041.75275.32395.0271
H113.22932.15084.54371.09353.49222.57004.68041.76735.02715.32391.7527
H123.22932.15084.54371.09353.49222.57004.68041.76735.32395.02711.7527

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 125.342 C1 C2 H6 118.554
C1 C3 H7 111.507 C1 C3 H9 111.253
C1 C3 H10 111.253 C2 C1 C3 125.342
C2 C1 H5 118.554 C2 C4 H8 111.507
C2 C4 H11 111.253 C2 C4 H12 111.253
C3 C1 H5 116.104 C4 C2 H6 116.104
H7 C3 H9 108.045 H7 C3 H10 108.045
H8 C4 H11 108.045 H8 C4 H12 108.045
H9 C3 H10 106.527 H11 C4 H12 106.527
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3LYPultrafine/cc-pVTZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.110      
2 C -0.110      
3 C -0.273      
4 C -0.273      
5 H 0.101      
6 H 0.101      
7 H 0.091      
8 H 0.091      
9 H 0.095      
10 H 0.095      
11 H 0.095      
12 H 0.095      


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 -25.973 0.342 0.000
y 0.342 -25.709 0.000
z 0.000 0.000 -28.177
Traceless
 xyz
x 0.970 0.342 0.000
y 0.342 1.366 0.000
z 0.000 0.000 -2.336
Polar
3z2-r2-4.673
x2-y2-0.264
xy0.342
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 6.836 0.279 0.000
y 0.279 10.156 0.000
z 0.000 0.000 5.447


<r2> (average value of r2) Å2
<r2> 111.766
(<r2>)1/2 10.572