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

using model chemistry: CCD/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 CCD/6-31G*
 hartrees
Energy at 0K-193.412566
Energy at 298.15K-193.416903
HF Energy-192.745868
Nuclear repulsion energy140.807082
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 CCD/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' 3501 3314 48.71      
2 A' 3211 3040 23.36      
3 A' 3191 3020 7.78      
4 A' 3176 3006 3.10      
5 A' 3073 2908 18.12      
6 A' 2238 2119 0.47      
7 A' 1749 1656 1.55      
8 A' 1541 1458 5.21      
9 A' 1481 1402 4.27      
10 A' 1442 1365 5.67      
11 A' 1298 1229 0.17      
12 A' 1153 1091 0.49      
13 A' 994 941 14.63      
14 A' 924 875 1.27      
15 A' 666 630 3.26      
16 A' 600 567 45.65      
17 A' 377 357 3.83      
18 A' 162 153 0.14      
19 A" 3134 2966 18.91      
20 A" 1538 1456 6.81      
21 A" 1099 1040 0.99      
22 A" 977 925 0.14      
23 A" 756 715 21.00      
24 A" 550 521 63.78      
25 A" 447 423 3.34      
26 A" 259 245 0.09      
27 A" 135 128 0.35      

Unscaled Zero Point Vibrational Energy (zpe) 19835.6 cm-1
Scaled (by 0.9465) Zero Point Vibrational Energy (zpe) 18774.4 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 CCD/6-31G*
ABC
0.39529 0.11081 0.08797

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
H1 3.152 -0.975 0.000
C2 2.245 -0.409 0.000
C3 1.207 0.217 0.000
H4 0.128 2.081 0.000
C5 0.000 1.000 0.000
H6 -2.078 1.173 0.000
C7 -1.238 0.478 0.000
H8 -0.672 -1.600 0.000
H9 -2.175 -1.243 0.883
H10 -2.175 -1.243 -0.883
C11 -1.577 -0.984 0.000

Atom - Atom Distances (Å)
  H1 C2 C3 H4 C5 H6 C7 H8 H9 H10 C11
H11.06852.28114.29933.71915.65414.62423.87515.40645.40644.7285
C21.06851.21273.26912.65064.60403.59463.15104.58414.58413.8647
C32.28111.21272.15411.43833.42142.45882.61363.78803.78803.0314
H44.29933.26912.15411.08942.38582.10673.76714.13984.13983.5075
C53.71912.65061.43831.08942.08551.34372.68483.24683.24682.5339
H65.65414.60403.42142.38582.08551.09063.10902.57482.57482.2150
C74.62423.59462.45882.10671.34371.09062.15312.14942.14941.5005
H83.87513.15102.61363.76712.68483.10902.15311.77901.77901.0939
H95.40644.58413.78804.13983.24682.57482.14941.77901.76631.0979
H105.40644.58413.78804.13983.24682.57482.14941.77901.76631.0979
C114.72853.86473.03143.50752.53392.21501.50051.09391.09791.0979

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 179.155 C2 C3 C5 178.126
C3 C5 H4 116.226 C3 C5 C7 124.182
H4 C5 C7 119.592 C5 C7 H6 117.522
C5 C7 C11 125.883 H6 C7 C11 116.595
C7 C11 H8 111.216 C7 C11 H9 110.671
C7 C11 H10 110.671 H8 C11 H9 108.523
H8 C11 H10 108.523 H9 C11 H10 107.108
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability