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 C6H12 ((Z)-hex-2-ene)

using model chemistry: B3PW91/cc-pVDZ

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 2 yes C1 1A

Conformer 1 (C1)

Jump to S1C2
Vibrational Frequencies calculated at B3PW91/cc-pVDZ
Rotational Constants (cm-1) from geometry optimized at B3PW91/cc-pVDZ
See section I.F.4 to change rotational constant units
Geometric Data calculated at B3PW91/cc-pVDZ
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability

Conformer 2 (C1)

Jump to S1C1
Energy calculated at B3PW91/cc-pVDZ
 hartrees
Energy at 0K-235.776325
Energy at 298.15K-235.788591
HF Energy-235.776325
Nuclear repulsion energy229.466646
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 B3PW91/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 3159 3048 51.44      
2 A 3143 3033 7.77      
3 A 3128 3019 10.64      
4 A 3123 3014 31.43      
5 A 3116 3007 46.38      
6 A 3091 2983 17.34      
7 A 3089 2981 19.43      
8 A 3067 2960 6.34      
9 A 3036 2929 27.28      
10 A 3032 2926 32.16      
11 A 3032 2926 36.88      
12 A 3013 2908 21.20      
13 A 1750 1689 2.74      
14 A 1479 1427 5.43      
15 A 1468 1417 7.28      
16 A 1464 1413 2.05      
17 A 1461 1410 3.44      
18 A 1453 1402 0.92      
19 A 1450 1399 4.98      
20 A 1423 1373 10.88      
21 A 1396 1347 2.18      
22 A 1382 1334 2.20      
23 A 1364 1316 0.28      
24 A 1312 1266 0.03      
25 A 1287 1241 1.85      
26 A 1275 1231 5.03      
27 A 1240 1197 0.08      
28 A 1163 1123 0.34      
29 A 1111 1072 0.70      
30 A 1072 1035 2.21      
31 A 1055 1018 2.06      
32 A 1046 1009 0.59      
33 A 1010 975 6.25      
34 A 1004 969 1.79      
35 A 928 895 4.87      
36 A 902 871 6.21      
37 A 869 839 3.71      
38 A 751 725 2.11      
39 A 717 692 28.66      
40 A 569 549 8.11      
41 A 472 455 0.91      
42 A 364 352 0.02      
43 A 283 273 0.04      
44 A 249 240 0.00      
45 A 200 193 0.07      
46 A 141 136 0.35      
47 A 94 91 0.01      
48 A 56 54 0.14      

Unscaled Zero Point Vibrational Energy (zpe) 36143.7 cm-1
Scaled (by 0.965) Zero Point Vibrational Energy (zpe) 34878.7 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 B3PW91/cc-pVDZ
ABC
0.28465 0.04929 0.04542

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3PW91/cc-pVDZ

Point Group is C1

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 2.494 0.938 -0.081
C2 2.001 -0.474 -0.135
C3 0.769 -0.927 0.138
C4 -0.437 -0.134 0.548
C5 -1.597 -0.253 -0.449
C6 -2.845 0.505 -0.009
H7 1.713 1.657 0.204
H8 3.322 1.037 0.643
H9 2.900 1.250 -1.059
H10 2.752 -1.218 -0.429
H11 0.600 -2.007 0.040
H12 -0.182 0.929 0.687
H13 -0.785 -0.495 1.535
H14 -1.262 0.114 -1.434
H15 -1.843 -1.321 -0.593
H16 -3.660 0.402 -0.743
H17 -3.220 0.134 0.959
H18 -2.639 1.582 0.109

Atom - Atom Distances (Å)
  C1 C2 C3 C4 C5 C6 H7 H8 H9 H10 H11 H12 H13 H14 H15 H16 H17 H18
C11.49742.55023.18364.27725.35701.09891.10391.10382.19963.50402.78403.92654.07634.91676.21235.86355.1771
C21.49741.34082.55463.61894.94562.17732.15302.15281.09712.08392.72253.24813.56093.96255.76025.36935.0816
C32.55021.34081.50012.52923.88982.75173.26073.27282.08341.09782.15652.13312.77102.74034.70644.20854.2321
C43.18362.55461.50011.53422.55282.81903.93833.95333.50722.20051.10221.10712.16122.16493.51262.82632.8262
C54.27723.61892.52921.53421.52453.87705.20164.78064.45542.85382.16602.15681.10421.10502.18352.18312.1827
C65.35704.94563.88982.55281.52454.70586.22405.88695.87144.26392.78502.76172.16592.16311.10131.10281.1027
H71.09892.17732.75172.81903.87704.70581.77931.77993.12193.83292.08643.55583.72974.70575.59775.21774.3539
H81.10392.15303.26073.93835.20166.22401.77931.76612.56144.12823.50584.47365.11625.81057.14606.61186.0099
H91.10382.15283.27283.95334.78065.88691.77991.76612.55124.13573.55634.83214.32975.41436.62136.53985.6706
H102.19961.09712.08343.50724.45545.87143.12192.56142.55122.33993.80354.10984.34694.59906.62066.27906.0991
H113.50402.08391.09782.20052.85384.26393.83294.12824.13572.33993.10702.53703.18432.61514.95574.47484.8354
H122.78402.72252.15651.10222.16602.78502.08643.50583.55633.80353.10701.76412.51623.07583.79703.15242.6075
H133.92653.24812.13311.10712.15682.76173.55584.47364.83214.10982.53701.76413.06812.51523.77552.58023.1283
H144.07633.56092.77102.16121.10422.16593.72975.11624.32974.34693.18432.51623.06811.76202.51223.09302.5369
H154.91673.96252.74032.16491.10502.16314.70575.81055.41434.59902.61513.07582.51521.76202.50802.53463.0909
H166.21235.76024.70643.51262.18351.10135.59777.14606.62136.62064.95573.79703.77552.51222.50801.77821.7776
H175.86355.36934.20852.82632.18311.10285.21776.61186.53986.27904.47483.15242.58023.09302.53461.77821.7766
H185.17715.08164.23212.82622.18271.10274.35396.00995.67066.09914.83542.60753.12832.53693.09091.77761.7766

picture of (Z)-hex-2-ene state 1 conformation 2
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 C3 127.847 C1 C2 H10 115.073
C2 C1 H7 113.100 C2 C1 H8 110.810
C2 C1 H9 110.805 C2 C3 C4 128.021
C2 C3 H11 117.070 C3 C2 H10 117.079
C3 C4 C5 112.921 C3 C4 H12 111.010
C3 C4 H13 108.873 C4 C3 H11 114.902
C4 C5 C6 113.145 C4 C5 H14 108.902
C4 C5 H15 109.138 C5 C4 H12 109.391
C5 C4 H13 108.399 C5 C6 H16 111.499
C5 C6 H17 111.373 C5 C6 H18 111.351
C6 C5 H14 109.930 C6 C5 H15 109.662
H7 C1 H8 107.750 H7 C1 H9 107.817
H8 C1 H9 106.258 H12 C4 H13 105.975
H14 C5 H16 93.853 H16 C6 H17 107.565
H16 C6 H18 107.521 H17 C6 H18 107.315
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3PW91/cc-pVDZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.041      
2 C -0.115      
3 C -0.069      
4 C -0.019      
5 C -0.107      
6 C -0.075      
7 H 0.041      
8 H 0.056      
9 H 0.055      
10 H 0.008      
11 H 0.005      
12 H 0.026      
13 H 0.042      
14 H 0.039      
15 H 0.034      
16 H 0.039      
17 H 0.040      
18 H 0.040      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -0.044 0.234 -0.016 0.239
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -38.487 0.859 -0.574
y 0.859 -38.964 0.019
z -0.574 0.019 -40.746
Traceless
 xyz
x 1.369 0.859 -0.574
y 0.859 0.652 0.019
z -0.574 0.019 -2.021
Polar
3z2-r2-4.042
x2-y20.478
xy0.859
xz-0.574
yz0.019


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 13.446 0.665 -0.652
y 0.665 9.547 0.062
z -0.652 0.062 7.872


<r2> (average value of r2) Å2
<r2> 263.202
(<r2>)1/2 16.224