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All results from a given calculation for C5H8 (1,3-Butadiene, 2-methyl-)

using model chemistry: B1B95/6-311G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at B1B95/6-311G*
 hartrees
Energy at 0K-195.232487
Energy at 298.15K-195.240011
Nuclear repulsion energy161.007558
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 B1B95/6-311G*
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' 3245 3111 20.24      
2 A' 3237 3103 16.49      
3 A' 3163 3032 4.75      
4 A' 3154 3023 22.74      
5 A' 3150 3019 4.13      
6 A' 3142 3012 20.98      
7 A' 3045 2919 22.11      
8 A' 1726 1655 1.95      
9 A' 1682 1612 23.63      
10 A' 1505 1443 8.35      
11 A' 1461 1401 1.67      
12 A' 1439 1380 4.22      
13 A' 1411 1353 10.15      
14 A' 1342 1287 0.79      
15 A' 1320 1266 0.21      
16 A' 1087 1042 4.29      
17 A' 1003 962 0.11      
18 A' 966 926 0.69      
19 A' 805 772 0.17      
20 A' 532 510 0.14      
21 A' 416 399 1.47      
22 A' 263 252 0.99      
23 A" 3102 2973 21.43      
24 A" 1484 1422 10.60      
25 A" 1070 1026 0.01      
26 A" 1024 982 19.58      
27 A" 923 885 39.11      
28 A" 913 875 54.97      
29 A" 787 754 0.56      
30 A" 640 614 0.09      
31 A" 403 386 10.68      
32 A" 164 157 0.21      
33 A" 146 140 0.18      

Unscaled Zero Point Vibrational Energy (zpe) 24875.7 cm-1
Scaled (by 0.9586) Zero Point Vibrational Energy (zpe) 23845.8 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 B1B95/6-311G*
ABC
0.28738 0.14065 0.09611

See section I.F.4 to change rotational constant units
Geometric Data calculated at B1B95/6-311G*

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -0.580 1.729 0.000
C2 0.000 0.524 0.000
C3 -0.827 -0.680 0.000
C4 -0.371 -1.933 0.000
C5 1.490 0.364 0.000
H6 -1.659 1.837 0.000
H7 0.002 2.644 0.000
H8 -1.902 -0.513 0.000
H9 0.689 -2.160 0.000
H10 -1.047 -2.779 0.000
H11 1.993 1.330 0.000
H12 1.826 -0.194 0.878
H13 1.826 -0.194 -0.878

Atom - Atom Distances (Å)
  C1 C2 C3 C4 C5 H6 H7 H8 H9 H10 H11 H12 H13
C11.33702.42203.66772.47901.08461.08402.60274.09144.53212.60323.20223.2022
C21.33701.46132.48481.49832.11552.11972.16622.77193.46512.14972.14942.1494
C32.42201.46131.33322.54152.65103.42601.08752.11942.11013.46342.83652.8365
C43.66772.48481.33322.95573.98384.59182.08831.08431.08314.02902.93562.9356
C52.47901.49832.54152.95573.47612.72253.50312.64844.03881.08931.09331.0933
H61.08462.11552.65103.98383.47611.84632.36234.63634.65643.68674.12774.1277
H71.08402.11973.42604.59182.72251.84633.68624.85355.52332.38553.48593.4859
H82.60272.16621.08752.08833.50312.36233.68623.07092.42224.30883.84283.8428
H94.09142.77192.11941.08432.64844.63634.85353.07091.84303.72622.43502.4350
H104.53213.46512.11011.08314.03884.65645.52332.42221.84305.11123.96283.9628
H112.60322.14973.46344.02901.08933.68672.38554.30883.72625.11121.76701.7670
H123.20222.14942.83652.93561.09334.12773.48593.84282.43503.96281.76701.7562
H133.20222.14942.83652.93561.09334.12773.48593.84282.43503.96281.76701.7562

picture of 1,3-Butadiene, 2-methyl- state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 C3 119.821 C1 C2 C5 121.831
C2 C1 H6 121.407 C2 C1 H7 121.876
C2 C3 C4 125.480 C2 C3 H8 115.627
C2 C5 H11 111.372 C2 C5 H12 111.104
C2 C5 H13 111.104 C3 C2 C5 118.348
C3 C4 H9 122.164 C3 C4 H10 121.341
C4 C3 H8 118.893 H6 C1 H7 116.718
H9 C4 H10 116.495 H11 C5 H12 108.106
H11 C5 H13 108.106 H12 C5 H13 106.867
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B1B95/6-311G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.470      
2 C 0.125      
3 C -0.209      
4 C -0.446      
5 C -0.753      
6 H 0.212      
7 H 0.210      
8 H 0.196      
9 H 0.216      
10 H 0.216      
11 H 0.228      
12 H 0.238      
13 H 0.238      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.229 -0.007 0.000 0.229
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -29.361 0.115 0.000
y 0.115 -29.811 0.000
z 0.000 0.000 -35.115
Traceless
 xyz
x 3.102 0.115 0.000
y 0.115 2.427 0.000
z 0.000 0.000 -5.529
Polar
3z2-r2-11.057
x2-y20.450
xy0.115
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 8.205 -0.912 0.000
y -0.912 12.909 0.000
z 0.000 0.000 4.619


<r2> (average value of r2) Å2
<r2> 0.000
(<r2>)1/2 0.000