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All results from a given calculation for C6H6 (Hexa-1,5-diene-3-yne)

using model chemistry: MP2/6-31G(2df,p)

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2H 1Ag
Energy calculated at MP2/6-31G(2df,p)
 hartrees
Energy at 0K-231.519744
Energy at 298.15K-231.523507
HF Energy-230.620812
Nuclear repulsion energy175.082812
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 MP2/6-31G(2df,p)
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
(Å4/u)
Dep P Dep U
1 Ag 3322 3138 0.00      
2 Ag 3223 3045 0.00      
3 Ag 3214 3035 0.00      
4 Ag 2248 2123 0.00      
5 Ag 1645 1554 0.00      
6 Ag 1447 1367 0.00      
7 Ag 1330 1256 0.00      
8 Ag 1088 1028 0.00      
9 Ag 720 680 0.00      
10 Ag 508 479 0.00      
11 Ag 205 194 0.00      
12 Au 1030 973 34.72      
13 Au 945 893 60.23      
14 Au 694 656 7.72      
15 Au 178 169 5.08      
16 Au 44 42 0.08      
17 Bg 1027 970 0.00      
18 Bg 946 893 0.00      
19 Bg 700 661 0.00      
20 Bg 343 324 0.00      
21 Bu 3322 3138 6.16      
22 Bu 3223 3045 10.43      
23 Bu 3214 3035 8.21      
24 Bu 1675 1582 25.31      
25 Bu 1469 1387 5.84      
26 Bu 1327 1253 5.80      
27 Bu 1229 1160 14.63      
28 Bu 1022 965 0.39      
29 Bu 521 492 7.93      
30 Bu 105 100 1.84      

Unscaled Zero Point Vibrational Energy (zpe) 20982.1 cm-1
Scaled (by 0.9445) Zero Point Vibrational Energy (zpe) 19817.6 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 MP2/6-31G(2df,p)
ABC
0.86252 0.04560 0.04331

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2/6-31G(2df,p)

Point Group is C2h

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.612 0.000
C2 0.000 -0.612 0.000
C3 0.000 2.030 0.000
C4 0.000 -2.030 0.000
C5 1.117 2.775 0.000
C6 -1.117 -2.775 0.000
H7 -0.969 2.520 0.000
H8 0.969 -2.520 0.000
H9 2.098 2.316 0.000
H10 1.063 3.855 0.000
H11 -2.098 -2.316 0.000
H12 -1.063 -3.855 0.000

Atom - Atom Distances (Å)
  C1 C2 C3 C4 C5 C6 H7 H8 H9 H10 H11 H12
C11.22391.41782.64172.43423.56612.13993.27842.70253.41283.60174.5917
C21.22392.64171.41783.56612.43423.27842.13993.60174.59172.70253.4128
C31.41782.64174.05951.34294.93251.08594.65182.11702.11224.82545.9800
C42.64171.41784.05954.93251.34294.65181.08594.82545.98002.11702.1122
C52.43423.56611.34294.93255.98222.10175.29661.08221.08196.02076.9789
C63.56612.43424.93251.34295.98225.29662.10176.02076.97891.08221.0819
H72.13993.27841.08594.65182.10175.29665.39973.07322.43104.96596.3758
H83.27842.13994.65181.08595.29662.10175.39974.96596.37583.07322.4310
H92.70253.60172.11704.82541.08226.02073.07324.96591.85486.24926.9331
H103.41284.59172.11225.98001.08196.97892.43106.37581.85486.93317.9978
H113.60172.70254.82542.11706.02071.08224.96593.07326.24926.93311.8548
H124.59173.41285.98002.11226.97891.08196.37582.43106.93317.99781.8548

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 123.687
C1 C3 H7 116.840 C2 C1 C3 180.000
C2 C4 C6 123.687 C2 C4 H8 116.840
C3 C5 H9 121.237 C3 C5 H10 120.788
C4 C6 H11 121.237 C4 C6 H12 120.788
C5 C3 H7 119.473 C6 C4 H8 119.473
H9 C5 H10 117.975 H11 C6 H12 117.975
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability