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

using model chemistry: MP2=FULL/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 MP2=FULL/6-31G*
 hartrees
Energy at 0K-193.402007
Energy at 298.15K-193.406262
HF Energy-192.744618
Nuclear repulsion energy141.063349
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=FULL/6-31G*
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' 3521 3318 57.67      
2 A' 3233 3046 22.69      
3 A' 3216 3030 3.70      
4 A' 3206 3021 1.12      
5 A' 3099 2920 14.97      
6 A' 2155 2031 1.31      
7 A' 1715 1616 1.58      
8 A' 1548 1459 6.19      
9 A' 1479 1394 4.75      
10 A' 1441 1357 5.80      
11 A' 1297 1222 0.24      
12 A' 1154 1087 0.77      
13 A' 999 941 16.93      
14 A' 930 876 1.39      
15 A' 665 626 2.90      
16 A' 571 538 47.24      
17 A' 373 351 2.95      
18 A' 159 150 0.12      
19 A" 3171 2988 14.62      
20 A" 1548 1458 7.08      
21 A" 1098 1035 0.79      
22 A" 970 914 0.08      
23 A" 754 711 22.14      
24 A" 529 499 54.51      
25 A" 409 385 12.82      
26 A" 251 237 0.13      
27 A" 138 130 0.40      

Unscaled Zero Point Vibrational Energy (zpe) 19814.3 cm-1
Scaled (by 0.9422) Zero Point Vibrational Energy (zpe) 18669.0 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 MP2=FULL/6-31G*
ABC
0.39541 0.11169 0.08852

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2=FULL/6-31G*

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
H1 3.143 -0.981 0.000
C2 2.241 -0.411 0.000
C3 1.195 0.221 0.000
H4 0.121 2.081 0.000
C5 0.000 1.000 0.000
H6 -2.080 1.169 0.000
C7 -1.241 0.475 0.000
H8 -0.654 -1.586 0.000
H9 -2.159 -1.249 0.880
H10 -2.159 -1.249 -0.880
C11 -1.564 -0.983 0.000

Atom - Atom Distances (Å)
  H1 C2 C3 H4 C5 H6 C7 H8 H9 H10 C11
H11.06632.28854.30173.71485.64744.61873.84515.38085.38084.7069
C21.06631.22233.27202.64854.60073.59283.12514.56494.56493.8483
C32.28851.22232.14811.42663.40912.44872.58563.76593.76593.0103
H44.30173.27202.14811.08792.38282.10563.74864.13084.13083.4973
C53.71482.64851.42661.08792.08661.34702.66793.23943.23942.5259
H65.64744.60073.40912.38282.08661.08863.10162.57392.57392.2125
C74.61873.59282.44872.10561.34701.08862.14322.14272.14271.4939
H83.84513.12512.58563.74862.66793.10162.14321.77541.77541.0916
H95.38084.56493.76594.13083.23942.57392.14271.77541.76091.0951
H105.38084.56493.76594.13083.23942.57392.14271.77541.76091.0951
C114.70693.84833.01033.49732.52592.21251.49391.09161.09511.0951

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 178.826 C2 C3 C5 178.003
C3 C5 H4 116.720 C3 C5 C7 123.951
H4 C5 C7 119.329 C5 C7 H6 117.512
C5 C7 C11 125.450 H6 C7 C11 117.038
C7 C11 H8 111.024 C7 C11 H9 110.768
C7 C11 H10 110.768 H8 C11 H9 108.567
H8 C11 H10 108.567 H9 C11 H10 107.020
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability