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All results from a given calculation for C6H10 (2-Hexyne)

using model chemistry: HF/CEP-31G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C1 1A'
Energy calculated at HF/CEP-31G*
 hartrees
Energy at 0K-38.673615
Energy at 298.15K-38.682719
Nuclear repulsion energy112.170017
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 HF/CEP-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 A 3312 2974 33.08      
2 A 3279 2944 88.72      
3 A 3239 2908 65.61      
4 A 3237 2907 3.68      
5 A 3236 2906 71.26      
6 A 3208 2881 55.67      
7 A 2549 2289 0.30      
8 A 1633 1467 3.75      
9 A 1619 1454 0.43      
10 A 1613 1448 2.40      
11 A 1611 1447 6.61      
12 A 1556 1398 0.11      
13 A 1544 1386 13.19      
14 A 1520 1365 3.11      
15 A 1412 1268 20.86      
16 A 1207 1084 5.55      
17 A 1199 1077 0.17      
18 A 1146 1029 0.02      
19 A 1111 998 2.36      
20 A 958 860 2.03      
21 A 796 715 0.09      
22 A 538 483 1.53      
23 A 352 316 0.24      
24 A 287 258 9.10      
25 A 100 90 2.03      
26 A 3312 2974 34.57      
27 A 3299 2963 153.30      
28 A 3276 2942 9.89      
29 A 3262 2929 4.65      
30 A 1626 1460 6.04      
31 A 1611 1447 6.07      
32 A 1435 1288 0.01      
33 A 1365 1226 0.00      
34 A 1201 1079 0.03      
35 A 1140 1024 0.01      
36 A 918 824 0.27      
37 A 779 699 1.19      
38 A 374 336 0.13      
39 A 257 231 0.08      
40 A 227 204 11.67      
41 A 91 82 0.66      
42 A 10 9 0.01      

Unscaled Zero Point Vibrational Energy (zpe) 33221.1 cm-1
Scaled (by 0.898) Zero Point Vibrational Energy (zpe) 29832.5 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 HF/CEP-31G*
ABC
0.56959 0.03938 0.03787

See section I.F.4 to change rotational constant units
Geometric Data calculated at HF/CEP-31G*

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 1.295 -2.772 0.000
C2 -1.883 2.848 0.000
C3 0.980 -0.238 0.000
C4 0.000 0.886 0.000
C5 0.280 -1.614 0.000
C6 -0.859 1.762 0.000
H7 0.787 -3.737 0.000
H8 -2.886 2.423 0.000
H9 1.938 -2.731 0.883
H10 1.938 -2.731 -0.883
H11 -0.367 -1.684 -0.876
H12 -0.367 -1.684 0.876
H13 1.621 -0.146 -0.877
H14 1.621 -0.146 0.877
H15 -1.770 3.473 0.885
H16 -1.770 3.473 -0.885

Atom - Atom Distances (Å)
  C1 C2 C3 C4 C5 C6 H7 H8 H9 H10 H11 H12 H13 H14 H15 H16
C16.45642.55293.88021.53965.01941.09116.66791.09271.09272.17052.17052.78762.78767.01287.0128
C26.45644.21002.71964.95911.49277.10651.08956.82016.82014.85904.85904.69174.69171.08951.0895
C32.55294.21001.49161.54362.71743.50434.69312.81302.81302.16132.16131.09021.09024.70364.7036
C43.88022.71961.49162.51581.22704.68993.26934.19784.19782.73992.73992.11232.11233.25753.2575
C51.53964.95911.54362.51583.56302.18305.13012.18552.18551.09081.09082.17342.17345.55605.5560
C65.01941.49272.71741.22703.56305.74032.13145.36605.36603.58943.58943.24983.24982.13132.1313
H71.09117.10653.50434.68992.18305.74037.17191.76491.76492.51272.51273.78993.78997.70187.7018
H86.66791.08954.69313.26935.13012.13147.17197.11437.11434.89684.89685.26105.26101.76991.7699
H91.09276.82012.81304.19782.18555.36601.76497.11431.76533.08222.53153.14372.60517.22857.4415
H101.09276.82012.81304.19782.18555.36601.76497.11431.76532.53153.08222.60513.14377.44157.2285
H112.17054.85902.16132.73991.09083.58942.51274.89683.08222.53151.75132.51363.06435.62775.3451
H122.17054.85902.16132.73991.09083.58942.51274.89682.53153.08221.75133.06432.51365.34515.6277
H132.78764.69171.09022.11232.17343.24983.78995.26103.14372.60512.51363.06431.75405.26354.9597
H142.78764.69171.09022.11232.17343.24983.78995.26102.60513.14373.06432.51361.75404.95975.2635
H157.01281.08954.70363.25755.55602.13137.70181.76997.22857.44155.62775.34515.26354.95971.7704
H167.01281.08954.70363.25755.55602.13137.70181.76997.44157.22855.34515.62774.95975.26351.7704

picture of 2-Hexyne state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C5 C3 111.783 C1 C5 H11 110.034
C1 C5 H12 110.034 C2 C6 C4 178.820
C3 C4 C6 176.618 C3 C5 H11 109.035
C3 C5 H12 109.035 C4 C3 C5 111.953
C4 C3 H13 108.810 C4 C3 H14 108.810
C5 C1 H7 111.008 C5 C1 H9 111.117
C5 C1 H10 111.117 C5 C3 H13 110.016
C5 C3 H14 110.016 C6 C2 H8 110.280
C6 C2 H15 110.281 C6 C2 H16 110.281
H7 C1 H9 107.842 H7 C1 H10 107.842
H8 C2 H15 108.633 H8 C2 H16 108.633
H9 C1 H10 107.760 H11 C5 H12 106.784
H13 C3 H14 107.102 H15 C2 H16 108.683
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HF/CEP-31G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.267      
2 C 0.315      
3 C 0.626      
4 C -0.779      
5 C -0.212      
6 C -0.762      
7 H 0.153      
8 H 0.120      
9 H 0.085      
10 H 0.085      
11 H 0.098      
12 H 0.098      
13 H 0.098      
14 H 0.098      
15 H 0.122      
16 H 0.122      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -0.164 -0.146 0.000 0.219
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -35.967 -3.339 0.000
y -3.339 -35.619 0.000
z 0.000 0.000 -38.489
Traceless
 xyz
x 1.087 -3.339 0.000
y -3.339 1.609 0.000
z 0.000 0.000 -2.696
Polar
3z2-r2-5.392
x2-y2-0.348
xy-3.339
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 9.187 -2.956 0.000
y -2.956 10.885 0.000
z 0.000 0.000 6.441


<r2> (average value of r2) Å2
<r2> 239.355
(<r2>)1/2 15.471