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

using model chemistry: MP2/TZVP

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at MP2/TZVP
 hartrees
Energy at 0K-193.502934
Energy at 298.15K 
HF Energy-192.810378
Nuclear repulsion energy138.155915
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/TZVP
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 3511 3328 64.65      
2 A 3206 3039 21.12      
3 A 3195 3028 3.60      
4 A 3173 3008 11.66      
5 A 3076 2915 22.91      
6 A 2141 2029 0.12      
7 A 1698 1610 0.83      
8 A 1518 1439 10.48      
9 A 1436 1361 1.34      
10 A 1345 1275 1.05      
11 A 1329 1260 2.87      
12 A 1148 1088 0.08      
13 A 1055 1000 9.05      
14 A 923 875 5.97      
15 A 634 601 48.34      
16 A 536 508 1.05      
17 A 382 362 1.96      
18 A 161 153 1.35      
19 A 3149 2985 13.83      
20 A 1486 1408 7.43      
21 A 1068 1013 1.01      
22 A 973 922 43.37      
23 A 762 723 1.59      
24 A 502 475 37.44      
25 A 229 217 8.32      
26 A 186 176 2.40      
27 A 166i 157i 2.89      

Unscaled Zero Point Vibrational Energy (zpe) 19326.5 cm-1
Scaled (by 0.9479) Zero Point Vibrational Energy (zpe) 18319.6 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/TZVP
ABC
1.28585 0.07496 0.07177

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2/TZVP

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -2.253 -0.516 0.000
H2 -2.662 -1.008 0.882
H3 -2.662 -1.008 -0.882
H4 -2.578 0.525 0.000
C5 -0.786 -0.592 0.000
H6 -0.331 -1.531 0.000
C7 0.000 0.504 0.000
H8 -0.464 1.443 0.000
C9 1.343 0.432 0.000
C10 2.552 0.378 0.000
H11 3.562 0.336 0.000

Atom - Atom Distances (Å)
  C1 H2 H3 H4 C5 H6 C7 H8 C9 C10 H11
C11.08941.08941.09031.46882.17372.47302.65293.71924.88705.8765
H21.08941.76311.77032.11402.54623.18573.40824.34665.46616.4276
H31.08941.76311.77032.11402.54623.18573.40824.34665.46616.4276
H41.09031.77031.77032.11173.04612.57862.30553.92305.13216.1429
C51.46882.11402.11402.11171.04401.34862.05992.36283.47574.4455
H62.17372.54622.54623.04611.04402.06242.97722.58073.45804.3174
C72.47303.18573.18572.57861.34862.06241.04691.34542.55463.5655
H82.65293.40823.40822.30552.05992.97721.04692.07053.19744.1746
C93.71924.34664.34663.92302.36282.58071.34542.07051.20932.2202
C104.88705.46615.46615.13213.47573.45802.55463.19741.20931.0110
H115.87656.42766.42766.14294.44554.31743.56554.17462.22021.0110

picture of 3-Penten-1-yne, (E)- state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C5 H6 118.796 C1 C5 C7 122.685
H2 C1 H3 108.046 H2 C1 H4 108.618
H2 C1 C5 110.575 H3 C1 H4 108.618
H3 C1 C5 110.575 H4 C1 C5 110.338
C5 C7 H8 118.065 C5 C7 C9 122.580
H6 C5 C7 118.519 C7 C9 C10 179.467
H8 C7 C9 119.355 C9 C10 H11 179.880
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability