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

using model chemistry: mPW1PW91/aug-cc-pVDZ

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at mPW1PW91/aug-cc-pVDZ
 hartrees
Energy at 0K-195.280338
Energy at 298.15K-195.288049
Nuclear repulsion energy160.352833
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 mPW1PW91/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' 3271 3135 11.77      
2 A' 3264 3128 10.27      
3 A' 3183 3050 4.80      
4 A' 3173 3041 11.66      
5 A' 3168 3036 3.51      
6 A' 3159 3027 16.61      
7 A' 3051 2924 19.36      
8 A' 1723 1651 2.56      
9 A' 1677 1607 32.46      
10 A' 1484 1422 5.97      
11 A' 1445 1385 4.50      
12 A' 1430 1370 2.81      
13 A' 1396 1338 8.58      
14 A' 1338 1282 0.28      
15 A' 1316 1261 0.23      
16 A' 1082 1036 3.65      
17 A' 1001 959 0.21      
18 A' 968 928 0.85      
19 A' 809 775 0.18      
20 A' 534 512 0.09      
21 A' 426 408 1.60      
22 A' 278 266 1.00      
23 A" 3118 2988 13.17      
24 A" 1461 1400 8.94      
25 A" 1057 1013 0.06      
26 A" 1029 986 14.92      
27 A" 950 910 44.93      
28 A" 936 897 40.38      
29 A" 790 757 0.43      
30 A" 644 618 0.06      
31 A" 414 397 11.12      
32 A" 211 203 0.36      
33 A" 167 160 0.17      

Unscaled Zero Point Vibrational Energy (zpe) 24975.7 cm-1
Scaled (by 0.9583) Zero Point Vibrational Energy (zpe) 23934.2 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 mPW1PW91/aug-cc-pVDZ
ABC
0.28535 0.13939 0.09532

See section I.F.4 to change rotational constant units
Geometric Data calculated at mPW1PW91/aug-cc-pVDZ

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -0.596 1.730 0.000
C2 0.000 0.525 0.000
C3 -0.822 -0.688 0.000
C4 -0.361 -1.946 0.000
C5 1.494 0.380 0.000
H6 -1.682 1.823 0.000
H7 -0.019 2.653 0.000
H8 -1.903 -0.524 0.000
H9 0.704 -2.175 0.000
H10 -1.043 -2.794 0.000
H11 1.983 1.360 0.000
H12 1.835 -0.176 0.884
H13 1.835 -0.176 -0.884

Atom - Atom Distances (Å)
  C1 C2 C3 C4 C5 H6 H7 H8 H9 H10 H11 H12 H13
C11.34442.42803.68332.48761.08971.08922.60524.11564.54572.60573.21273.2127
C21.34441.46492.49681.50082.12452.12872.17252.79003.47862.15202.15372.1537
C32.42801.46491.34042.55052.65363.43621.09262.13132.11783.47332.84652.8465
C43.68332.49681.34042.97513.99374.61202.09741.08921.08854.05242.95522.9552
C52.48761.50082.55052.97513.48782.73003.51482.67474.06371.09491.09881.0988
H61.08972.12452.65363.99373.48781.85892.35744.65584.66073.69424.14024.1402
H71.08922.12873.43624.61202.73001.85893.69404.88215.54272.38343.49583.4958
H82.60522.17251.09262.09743.51482.35743.69403.08562.42694.31853.85603.8560
H94.11562.79002.13131.08922.67474.65584.88213.08561.85393.75912.46082.4608
H104.54573.47862.11781.08854.06374.66075.54272.42691.85395.13943.98963.9896
H112.60572.15203.47334.05241.09493.69422.38344.31853.75915.13941.77841.7784
H123.21272.15372.84652.95521.09884.14023.49583.85602.46083.98961.77841.7683
H133.21272.15372.84652.95521.09884.14023.49583.85602.46083.98961.77841.7683

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 119.537 C1 C2 C5 121.829
C2 C1 H6 121.218 C2 C1 H7 121.668
C2 C3 C4 125.704 C2 C3 H8 115.542
C2 C5 H11 111.042 C2 C5 H12 110.934
C2 C5 H13 110.934 C3 C2 C5 118.634
C3 C4 H9 122.285 C3 C4 H10 121.012
C4 C3 H8 118.754 H6 C1 H7 117.113
H9 C4 H10 116.703 H11 C5 H12 108.322
H11 C5 H13 108.322 H12 C5 H13 107.147
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at mPW1PW91/aug-cc-pVDZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.841      
2 C 0.625      
3 C 1.108      
4 C 0.253      
5 C 0.118      
6 H -0.542      
7 H -0.551      
8 H -0.726      
9 H -0.577      
10 H -0.453      
11 H -0.333      
12 H 0.118      
13 H 0.118      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.291 0.009 0.000 0.292
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -29.604 0.096 0.000
y 0.096 -30.228 0.000
z 0.000 0.000 -35.298
Traceless
 xyz
x 3.159 0.096 0.000
y 0.096 2.223 0.000
z 0.000 0.000 -5.382
Polar
3z2-r2-10.764
x2-y20.624
xy0.096
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 9.315 -0.836 0.000
y -0.836 14.171 0.000
z 0.000 0.000 6.844


<r2> (average value of r2) Å2
<r2> 131.541
(<r2>)1/2 11.469