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All results from a given calculation for C5H6 (3-Penten-1-yne, (Z)-)

using model chemistry: CID/6-31G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at CID/6-31G*
 hartrees
Energy at 0K-193.305922
Energy at 298.15K-193.310559
HF Energy-192.747654
Nuclear repulsion energy141.613617
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 CID/6-31G*
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
(Å4/u)
Dep P Dep U
1 A' 3594 3320 60.64      
2 A' 3302 3050 21.84      
3 A' 3279 3029 7.82      
4 A' 3260 3012 3.75      
5 A' 3154 2913 19.96      
6 A' 2328 2150 0.64      
7 A' 1815 1676 4.04      
8 A' 1579 1459 6.49      
9 A' 1523 1407 3.20      
10 A' 1482 1369 6.29      
11 A' 1334 1232 0.02      
12 A' 1184 1094 0.39      
13 A' 1017 940 15.86      
14 A' 947 875 1.08      
15 A' 695 642 40.88      
16 A' 685 633 8.92      
17 A' 399 368 6.16      
18 A' 171 158 0.20      
19 A" 3214 2968 19.97      
20 A" 1578 1458 7.20      
21 A" 1136 1049 1.14      
22 A" 1038 958 0.55      
23 A" 795 734 23.39      
24 A" 633 585 67.27      
25 A" 515 476 2.26      
26 A" 288 266 0.98      
27 A" 143 132 0.43      

Unscaled Zero Point Vibrational Energy (zpe) 20542.4 cm-1
Scaled (by 0.9237) Zero Point Vibrational Energy (zpe) 18975.0 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 CID/6-31G*
ABC
0.40016 0.11185 0.08884

See section I.F.4 to change rotational constant units
Geometric Data calculated at CID/6-31G*

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
H1 3.137 -0.962 0.000
C2 2.232 -0.407 0.000
C3 1.205 0.215 0.000
H4 0.129 2.067 0.000
C5 0.000 0.993 0.000
H6 -2.062 1.168 0.000
C7 -1.228 0.476 0.000
H8 -0.680 -1.599 0.000
H9 -2.170 -1.231 0.877
H10 -2.170 -1.231 -0.877
C11 -1.573 -0.979 0.000

Atom - Atom Distances (Å)
  H1 C2 C3 H4 C5 H6 C7 H8 H9 H10 C11
H11.06182.26244.26923.69635.61814.59603.86975.38605.38604.7099
C21.06181.20063.24722.63464.57333.57103.14634.56384.56383.8476
C32.26241.20062.14201.43423.40272.44722.61593.77543.77543.0238
H44.26923.24722.14201.08192.36752.09113.75384.11464.11463.4893
C53.69632.63461.43421.08192.06891.33252.67923.22863.22862.5225
H65.61814.57333.40272.36752.06891.08333.09252.55652.55652.2022
C74.59603.57102.44722.09111.33251.08332.14582.13782.13781.4955
H83.86973.14632.61593.75382.67923.09252.14581.76821.76821.0867
H95.38604.56383.77544.11463.22862.55652.13781.76821.75491.0909
H105.38604.56383.77544.11463.22862.55652.13781.76821.75491.0909
C114.70993.84763.02383.48932.52252.20221.49551.08671.09091.0909

picture of 3-Penten-1-yne, (Z)- state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
H1 C2 C3 179.681 C2 C3 C5 178.372
C3 C5 H4 116.005 C3 C5 C7 124.338
H4 C5 C7 119.657 C5 C7 H6 117.463
C5 C7 C11 126.151 H6 C7 C11 116.386
C7 C11 H8 111.425 C7 C11 H9 110.517
C7 C11 H10 110.517 H8 C11 H9 108.580
H8 C11 H10 108.580 H9 C11 H10 107.090
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability