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 C6H6 (Hexa-1,5-diene-3-yne)

using model chemistry: B3LYP/3-21G

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2H 1Ag
Energy calculated at B3LYP/3-21G
 hartrees
Energy at 0K-230.871794
Energy at 298.15K-230.875752
HF Energy-230.871794
Nuclear repulsion energy175.110472
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 B3LYP/3-21G
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 3258 3143 0.00      
2 Ag 3172 3060 0.00      
3 Ag 3150 3039 0.00      
4 Ag 2328 2246 0.00      
5 Ag 1656 1598 0.00      
6 Ag 1490 1438 0.00      
7 Ag 1364 1316 0.00      
8 Ag 1131 1091 0.00      
9 Ag 722 697 0.00      
10 Ag 548 528 0.00      
11 Ag 231 223 0.00      
12 Au 1025 989 35.54      
13 Au 966 932 110.16      
14 Au 690 666 13.57      
15 Au 181 175 5.95      
16 Au 51 49 0.18      
17 Bg 1020 984 0.00      
18 Bg 965 931 0.00      
19 Bg 729 703 0.00      
20 Bg 392 378 0.00      
21 Bu 3258 3143 18.31      
22 Bu 3172 3060 6.30      
23 Bu 3150 3039 18.63      
24 Bu 1679 1620 17.91      
25 Bu 1507 1454 4.40      
26 Bu 1363 1315 2.03      
27 Bu 1228 1185 25.07      
28 Bu 1044 1008 0.81      
29 Bu 548 529 7.60      
30 Bu 109 105 2.58      

Unscaled Zero Point Vibrational Energy (zpe) 21061.7 cm-1
Scaled (by 0.9649) Zero Point Vibrational Energy (zpe) 20322.5 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 B3LYP/3-21G
ABC
0.87119 0.04554 0.04328

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3LYP/3-21G

Point Group is C2h

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.608 0.000
C2 0.000 -0.608 0.000
C3 0.000 2.026 0.000
C4 0.000 -2.026 0.000
C5 1.110 2.782 0.000
C6 -1.110 -2.782 0.000
H7 -0.976 2.507 0.000
H8 0.976 -2.507 0.000
H9 2.099 2.338 0.000
H10 1.050 3.864 0.000
H11 -2.099 -2.338 0.000
H12 -1.050 -3.864 0.000

Atom - Atom Distances (Å)
  C1 C2 C3 C4 C5 C6 H7 H8 H9 H10 H11 H12
C11.21521.41882.63402.44103.56642.13603.26442.72033.42193.61704.5936
C21.21522.63401.41883.56642.44103.26442.13603.61704.59362.72033.4219
C31.41882.63404.05281.34234.93461.08854.63782.12182.11694.84315.9837
C42.63401.41884.05284.93461.34234.63781.08854.84315.98372.12182.1169
C52.44103.56641.34234.93465.98992.10405.29091.08411.08416.04236.9883
C63.56642.44104.93461.34235.98995.29092.10406.04236.98831.08411.0841
H72.13603.26441.08854.63782.10405.29095.38163.07992.43914.97396.3721
H83.26442.13604.63781.08855.29092.10405.38164.97396.37213.07992.4391
H92.72033.61702.12184.84311.08416.04233.07994.97391.85156.28416.9562
H103.42194.59362.11695.98371.08416.98832.43916.37211.85156.95628.0091
H113.61702.72034.84312.12186.04231.08414.97393.07996.28416.95621.8515
H124.59363.42195.98372.11696.98831.08416.37212.43916.95628.00911.8515

picture of Hexa-1,5-diene-3-yne state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 C4 180.000 C1 C3 C5 124.248
C1 C3 H7 116.222 C2 C1 C3 180.000
C2 C4 C6 124.248 C2 C4 H8 116.222
C3 C5 H9 121.602 C3 C5 H10 121.114
C4 C6 H11 121.602 C4 C6 H12 121.114
C5 C3 H7 119.530 C6 C4 H8 119.530
H9 C5 H10 117.283 H11 C6 H12 117.283
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3LYP/3-21G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.050      
2 C -0.050      
3 C -0.223      
4 C -0.223      
5 C -0.339      
6 C -0.339      
7 H 0.218      
8 H 0.218      
9 H 0.200      
10 H 0.195      
11 H 0.200      
12 H 0.195      


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 -32.544 0.723 0.000
y 0.723 -26.762 0.000
z 0.000 0.000 -39.738
Traceless
 xyz
x 0.706 0.723 0.000
y 0.723 9.379 0.000
z 0.000 0.000 -10.085
Polar
3z2-r2-20.169
x2-y2-5.782
xy0.723
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 8.465 4.315 0.000
y 4.315 18.747 0.000
z 0.000 0.000 2.292


<r2> (average value of r2) Å2
<r2> 248.261
(<r2>)1/2 15.756