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 (2,4-Hexadiyne)

using model chemistry: mPW1PW91/6-311G**

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes D3H 1A1'
Energy calculated at mPW1PW91/6-311G**
 hartrees
Energy at 0K-232.129003
Energy at 298.15K-232.132156
Nuclear repulsion energy170.654259
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 mPW1PW91/6-311G**
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 3048 2916 0.00      
2 A 2403 2299 0.00      
3 A 1419 1358 0.00      
4 A 1310 1253 0.00      
5 A 568 543 0.00      
6 A 18 18 0.00      
7 A 3047 2915 58.23      
8 A 2293 2194 9.10      
9 A 1408 1347 9.99      
10 A 973 931 3.78      
11 A 3117 2982 14.59      
11 A 3117 2982 14.59      
12 A 1475 1411 18.12      
12 A 1475 1411 18.12      
13 A 1047 1002 4.35      
13 A 1047 1002 4.35      
14 A 378 362 6.38      
14 A 378 362 6.38      
15 A 101 97 7.53      
15 A 101 97 7.53      
16 A 3117 2983 0.00      
16 A 3117 2983 0.00      
17 A 1475 1411 0.00      
17 A 1475 1411 0.00      
18 A 1042 997 0.00      
18 A 1042 997 0.00      
19 A 566 542 0.00      
19 A 566 542 0.00      
20 A 248 237 0.00      
20 A 248 237 0.00      

Unscaled Zero Point Vibrational Energy (zpe) 20810.3 cm-1
Scaled (by 0.9567) Zero Point Vibrational Energy (zpe) 19909.2 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 mPW1PW91/6-311G**
ABC
2.67594 0.03732 0.03732

See section I.F.4 to change rotational constant units
Geometric Data calculated at mPW1PW91/6-311G**

Point Group is D3h

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.682
C2 0.000 0.000 -0.682
C3 0.000 0.000 1.891
C4 0.000 0.000 -1.891
C5 0.000 0.000 3.339
C6 0.000 0.000 -3.339
H7 0.000 1.021 3.730
H8 -0.884 -0.510 3.730
H9 0.884 -0.510 3.730
H10 0.000 1.021 -3.730
H11 0.884 -0.510 -3.730
H12 -0.884 -0.510 -3.730

Atom - Atom Distances (Å)
  C1 C2 C3 C4 C5 C6 H7 H8 H9 H10 H11 H12
C11.36361.20872.57232.65684.02053.21433.21433.21434.52814.52814.5281
C21.36362.57231.20874.02052.65684.52814.52814.52813.21433.21433.2143
C31.20872.57233.78111.44815.22922.10342.10342.10345.71225.71225.7122
C42.57231.20873.78115.22921.44815.71225.71225.71222.10342.10342.1034
C52.65684.02051.44815.22926.67731.09301.09301.09307.14177.14177.1417
C64.02052.65685.22921.44816.67737.14177.14177.14171.09301.09301.0930
H73.21434.52812.10345.71221.09307.14171.76791.76797.45947.66617.6661
H83.21434.52812.10345.71221.09307.14171.76791.76797.66617.66617.4594
H93.21434.52812.10345.71221.09307.14171.76791.76797.66617.45947.6661
H104.52813.21435.71222.10347.14171.09307.45947.66617.66611.76791.7679
H114.52813.21435.71222.10347.14171.09307.66617.66617.45941.76791.7679
H124.52813.21435.71222.10347.14171.09307.66617.45947.66611.76791.7679

picture of 2,4-Hexadiyne 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 180.000
C2 C1 C3 180.000 C2 C4 C6 180.000
C3 C5 H7 110.964 C3 C5 H8 110.964
C3 C5 H9 110.964 C4 C6 H10 110.964
C4 C6 H11 110.964 C4 C6 H12 110.964
H7 C5 H8 107.938 H7 C5 H9 107.938
H8 C5 H9 107.938 H10 C6 H11 107.938
H10 C6 H12 107.938 H11 C6 H12 107.938
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at mPW1PW91/6-311G** Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.031      
2 C 0.031      
3 C -0.234      
4 C -0.234      
5 C -0.264      
6 C -0.264      
7 H 0.156      
8 H 0.156      
9 H 0.156      
10 H 0.156      
11 H 0.156      
12 H 0.156      


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 -36.413 0.000 0.000
y 0.000 -36.413 0.000
z 0.000 0.000 -18.563
Traceless
 xyz
x -8.925 0.000 0.000
y 0.000 -8.925 0.000
z 0.000 0.000 17.850
Polar
3z2-r235.700
x2-y20.000
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 5.425 0.000 0.000
y 0.000 5.425 0.000
z 0.000 0.000 20.923


<r2> (average value of r2) Å2
<r2> 290.969
(<r2>)1/2 17.058