return to home page Computational Chemistry Comparison and Benchmark DataBase Release 22 (May 2022) Standard Reference Database 101 National Institute of Standards and Technology
You are here: Calculated > Energy > Optimized > Energy

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

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-193.412552
Energy at 298.15K-193.416802
HF Energy-192.746125
Nuclear repulsion energy137.697769
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' 3502 3315 51.11      
2 A' 3195 3024 23.73      
3 A' 3188 3018 3.91      
4 A' 3157 2988 13.63      
5 A' 3069 2905 22.25      
6 A' 2242 2122 0.08      
7 A' 1761 1667 0.25      
8 A' 1546 1463 8.83      
9 A' 1472 1393 1.74      
10 A' 1366 1293 1.54      
11 A' 1352 1279 1.28      
12 A' 1163 1100 0.35      
13 A' 1067 1010 7.59      
14 A' 937 887 5.03      
15 A' 609 576 47.83      
16 A' 546 517 0.41      
17 A' 391 370 1.36      
18 A' 173 164 0.84      
19 A" 3134 2966 18.91      
20 A" 1531 1449 6.90      
21 A" 1099 1040 0.27      
22 A" 995 942 37.33      
23 A" 807 763 0.77      
24 A" 539 511 43.21      
25 A" 405 383 7.26      
26 A" 192 181 0.20      
27 A" 166 157 1.20      

Unscaled Zero Point Vibrational Energy (zpe) 19801.1 cm-1
Scaled (by 0.9465) Zero Point Vibrational Energy (zpe) 18741.8 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
1.27975 0.07440 0.07125

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)
C1 -2.338 -0.428 0.000
H2 -2.775 -0.914 0.883
H3 -2.775 -0.914 -0.883
H4 -2.646 0.624 0.000
C5 -0.843 -0.557 0.000
H6 -0.430 -1.566 0.000
C7 0.000 0.488 0.000
H8 -0.398 1.504 0.000
C9 1.429 0.353 0.000
C10 2.639 0.292 0.000
H11 3.704 0.375 0.000

Atom - Atom Distances (Å)
  C1 H2 H3 H4 C5 H6 C7 H8 C9 C10 H11
C11.09811.09811.09591.50062.22222.51152.73823.84805.02916.0960
H21.09811.76551.77752.15402.58983.23223.50364.47935.61666.6653
H31.09811.76551.77752.15402.58983.23223.50364.47935.61666.6653
H41.09591.77751.77752.15463.11562.64942.41404.08435.29526.3553
C51.50062.15402.15402.15461.09111.34252.10812.44803.58404.6421
H62.22222.58982.58983.11561.09112.09873.07042.67213.58714.5669
C72.51153.23223.23222.64941.34252.09871.09131.43572.64623.7062
H82.73823.50363.50362.41402.10813.07041.09132.15983.27024.2554
C93.84804.47934.47934.08432.44802.67211.43572.15981.21112.2752
C105.02915.61665.61665.29523.58403.58712.64623.27021.21111.0688
H116.09606.66536.66536.35534.64214.56693.70624.25542.27521.0688

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 117.185 C1 C5 C7 124.010
H2 C1 H3 107.000 H2 C1 H4 108.223
H2 C1 C5 111.017 H3 C1 H4 108.223
H3 C1 C5 111.017 H4 C1 C5 111.203
C5 C7 H8 119.680 C5 C7 C9 123.529
H6 C5 C7 118.805 C7 C9 C10 177.528
H8 C7 C9 116.792 C9 C10 H11 172.647
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability