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

using model chemistry: MP2/cc-pVTZ

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/cc-pVTZ
 hartrees
Energy at 0K-193.616018
Energy at 298.15K-193.620451
Nuclear repulsion energy141.563656
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/cc-pVTZ
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' 3489 3313 65.52      
2 A' 3217 3054 13.63      
3 A' 3195 3034 2.78      
4 A' 3175 3015 2.72      
5 A' 3068 2913 14.74      
6 A' 2121 2014 0.00      
7 A' 1680 1595 2.15      
8 A' 1496 1421 7.41      
9 A' 1433 1361 4.52      
10 A' 1395 1325 5.81      
11 A' 1260 1196 0.01      
12 A' 1125 1068 0.26      
13 A' 976 927 16.58      
14 A' 918 872 2.10      
15 A' 656 623 12.08      
16 A' 631 599 31.16      
17 A' 364 346 5.31      
18 A' 154 146 0.33      
19 A" 3139 2981 10.58      
20 A" 1499 1424 6.14      
21 A" 1066 1012 1.67      
22 A" 985 935 0.40      
23 A" 746 708 21.76      
24 A" 599 569 55.47      
25 A" 488 464 5.18      
26 A" 267 253 1.73      
27 A" 138 131 0.64      

Unscaled Zero Point Vibrational Energy (zpe) 19641.2 cm-1
Scaled (by 0.9495) Zero Point Vibrational Energy (zpe) 18649.3 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/cc-pVTZ
ABC
0.39416 0.11321 0.08940

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
H1 3.122 -0.990 0.000
C2 2.223 -0.424 0.000
C3 1.191 0.223 0.000
H4 0.121 2.078 0.000
C5 0.000 1.003 0.000
H6 -2.071 1.170 0.000
C7 -1.238 0.478 0.000
H8 -0.641 -1.575 0.000
H9 -2.143 -1.245 0.877
H10 -2.143 -1.245 -0.877
C11 -1.551 -0.979 0.000

Atom - Atom Distances (Å)
  H1 C2 C3 H4 C5 H6 C7 H8 H9 H10 C11
H11.06172.27994.29163.70365.62474.60033.80845.34325.34324.6726
C21.06171.21823.26832.64194.58123.57693.08724.52814.52813.8146
C32.27991.21822.14211.42393.39742.44232.56703.74643.74642.9936
H44.29163.26832.14211.08222.37312.09913.73214.11524.11523.4846
C53.70362.64191.42391.08222.07821.34432.65663.22663.22662.5165
H65.62474.58123.39742.37312.07821.08343.09572.57002.57002.2116
C74.60033.57692.44232.09911.34431.08342.13852.13452.13451.4908
H83.80843.08722.56703.73212.65663.09572.13851.76971.76971.0873
H95.34324.52813.74644.11523.22662.57002.13451.76971.75311.0905
H105.34324.52813.74644.11523.22662.57002.13451.76971.75311.0905
C114.67263.81462.99363.48462.51652.21161.49081.08731.09051.0905

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 179.884 C2 C3 C5 178.842
C3 C5 H4 116.804 C3 C5 C7 123.810
H4 C5 C7 119.386 C5 C7 H6 117.348
C5 C7 C11 125.078 H6 C7 C11 117.574
C7 C11 H8 111.124 C7 C11 H9 110.607
C7 C11 H10 110.607 H8 C11 H9 108.700
H8 C11 H10 108.700 H9 C11 H10 106.981
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability