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

using model chemistry: B1B95/6-31G

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 1A1
Energy calculated at B1B95/6-31G
 hartrees
Energy at 0K-195.137137
Energy at 298.15K-195.144289
Nuclear repulsion energy157.056253
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 B1B95/6-31G
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 3173 3026 17.31      
2 A1 3157 3011 9.24      
3 A1 3049 2908 62.88      
4 A1 2107 2009 24.00      
5 A1 1552 1480 0.21      
6 A1 1513 1443 6.15      
7 A1 1455 1388 0.06      
8 A1 1352 1290 16.94      
9 A1 1049 1001 8.29      
10 A1 752 717 0.00      
11 A1 345 329 0.24      
12 A2 3112 2968 0.00      
13 A2 1518 1448 0.00      
14 A2 1031 983 0.00      
15 A2 623 594 0.00      
16 A2 159 152 0.00      
17 B1 3233 3084 10.65      
18 B1 3113 2969 51.65      
19 B1 1532 1461 22.02      
20 B1 1131 1078 1.55      
21 B1 1060 1011 0.00      
22 B1 477 455 0.77      
23 B1 264 252 5.60      
24 B1 173 165 1.45      
25 B2 3171 3025 20.36      
26 B2 3046 2905 19.81      
27 B2 1525 1454 8.33      
28 B2 1441 1374 7.79      
29 B2 1243 1185 6.09      
30 B2 996 949 0.55      
31 B2 930 887 66.51      
32 B2 615 586 9.02      
33 B2 186 178 0.45      

Unscaled Zero Point Vibrational Energy (zpe) 25041.5 cm-1
Scaled (by 0.9537) Zero Point Vibrational Energy (zpe) 23882.1 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 B1B95/6-31G
ABC
0.27717 0.11980 0.08787

See section I.F.4 to change rotational constant units
Geometric Data calculated at B1B95/6-31G

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 2.246
C2 0.000 0.000 0.936
H3 -0.922 0.000 2.821
H4 0.922 0.000 2.821
C5 0.000 0.000 -0.377
C6 0.000 1.282 -1.176
C7 0.000 -1.282 -1.176
H8 0.000 2.161 -0.529
H9 0.000 -2.161 -0.529
H10 0.882 1.330 -1.825
H11 -0.882 1.330 -1.825
H12 -0.882 -1.330 -1.825
H13 0.882 -1.330 -1.825

Atom - Atom Distances (Å)
  C1 C2 H3 H4 C5 C6 C7 H8 H9 H10 H11 H12 H13
C11.30941.08661.08662.62333.65393.65393.51703.51704.37294.37294.37294.3729
C21.30942.09782.09781.31392.47072.47072.61082.61083.18983.18983.18983.1898
H31.08662.09781.84403.32854.29724.29724.09164.09165.15854.83304.83305.1585
H41.08662.09781.84403.32854.29724.29724.09164.09164.83305.15855.15854.8330
C52.62331.31393.32853.32851.51011.51012.16592.16592.15492.15492.15492.1549
C63.65392.47074.29724.29721.51012.56351.09103.50251.09641.09642.83232.8323
C73.65392.47074.29724.29721.51012.56353.50251.09102.83232.83231.09641.0964
H83.51702.61084.09164.09162.16591.09103.50254.32111.77401.77403.82663.8266
H93.51702.61084.09164.09162.16593.50251.09104.32113.82663.82661.77401.7740
H104.37293.18985.15854.83302.15491.09642.83231.77403.82661.76403.19212.6604
H114.37293.18984.83305.15852.15491.09642.83231.77403.82661.76402.66043.1921
H124.37293.18984.83305.15852.15492.83231.09643.82661.77403.19212.66041.7640
H134.37293.18985.15854.83302.15492.83231.09643.82661.77402.66043.19211.7640

picture of 1,2-Butadiene, 3-methyl- state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 C5 180.000 C2 C1 H3 121.947
C2 C1 H4 121.947 C2 C5 C6 121.918
C2 C5 C7 121.918 H3 C1 H4 116.107
C5 C6 H8 111.740 C5 C6 H10 110.530
C5 C6 H11 110.530 C5 C7 H9 111.740
C5 C7 H12 110.530 C5 C7 H13 110.530
C6 C5 C7 116.163 H8 C6 H10 108.389
H8 C6 H11 108.389 H9 C7 H12 108.389
H9 C7 H13 108.389 H10 C6 H11 107.112
H12 C7 H13 107.112
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B1B95/6-31G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.454      
2 C 0.126      
3 H 0.165      
4 H 0.165      
5 C -0.038      
6 C -0.479      
7 C -0.479      
8 H 0.172      
9 H 0.172      
10 H 0.163      
11 H 0.163      
12 H 0.163      
13 H 0.163      


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 -0.611 0.611
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -31.539 0.000 0.000
y 0.000 -31.643 0.000
z 0.000 0.000 -29.025
Traceless
 xyz
x -1.205 0.000 0.000
y 0.000 -1.361 0.000
z 0.000 0.000 2.566
Polar
3z2-r25.132
x2-y20.104
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 5.368 0.000 0.000
y 0.000 5.839 0.000
z 0.000 0.000 12.669


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