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

using model chemistry: HF/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 HF/6-31G
 hartrees
Energy at 0K-192.679840
Energy at 298.15K-192.684746
Nuclear repulsion energy138.680978
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 HF/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 3675 3318 79.49      
2 A 3344 3019 32.40      
3 A 3338 3013 1.94      
4 A 3267 2950 21.11      
5 A 3181 2872 38.57      
6 A 2385 2153 4.95      
7 A 1871 1690 5.57      
8 A 1648 1488 12.66      
9 A 1588 1433 2.33      
10 A 1477 1333 2.93      
11 A 1462 1320 0.07      
12 A 1244 1123 1.87      
13 A 1111 1003 10.65      
14 A 1000 903 2.69      
15 A 886 800 67.22      
16 A 601 542 7.92      
17 A 433 391 3.30      
18 A 196 177 1.85      
19 A 3234 2920 29.60      
20 A 1638 1479 10.54      
21 A 1216 1098 0.58      
22 A 1117 1008 59.82      
23 A 954 862 1.20      
24 A 864 780 77.21      
25 A 524 473 4.15      
26 A 199 180 0.09      
27 A 191 172 3.36      

Unscaled Zero Point Vibrational Energy (zpe) 21320.4 cm-1
Scaled (by 0.9029) Zero Point Vibrational Energy (zpe) 19250.2 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 HF/6-31G
ABC
1.31402 0.07509 0.07196

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -2.329 -0.429 0.000
H2 -2.755 -0.914 0.873
H3 -2.755 -0.914 -0.873
H4 -2.651 0.605 0.000
C5 -0.835 -0.544 0.000
H6 -0.430 -1.541 0.000
C7 0.000 0.490 0.000
H8 -0.388 1.493 0.000
C9 1.427 0.370 0.000
C10 2.621 0.288 0.000
H11 3.672 0.214 0.000

Atom - Atom Distances (Å)
  C1 H2 H3 H4 C5 H6 C7 H8 C9 C10 H11
C11.08571.08571.08291.49852.20042.50402.73203.84055.00226.0353
H21.08571.74591.75562.14112.56063.21303.48734.46115.57776.5830
H31.08571.74591.75562.14112.56063.21303.48734.46115.57776.5830
H41.08291.75561.75562.14843.08782.65302.43074.08465.28156.3344
C51.49852.14112.14112.14841.07611.32922.08572.44003.55524.5702
H62.20042.56062.56063.08781.07612.07623.03452.66513.55784.4618
C72.50403.21303.21302.65301.32922.07621.07551.43232.62923.6821
H82.73203.48733.48732.43072.08573.03451.07552.13463.24184.2564
C93.84054.46114.46114.08462.44002.66511.43232.13461.19702.2499
C105.00225.57775.57775.28153.55523.55782.62923.24181.19701.0529
H116.03536.58306.58306.33444.57024.46183.68214.25642.24991.0529

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 116.487 C1 C5 C7 124.531
H2 C1 H3 107.032 H2 C1 H4 108.102
H2 C1 C5 110.887 H3 C1 H4 108.102
H3 C1 C5 110.887 H4 C1 C5 111.655
C5 C7 H8 119.934 C5 C7 C9 124.113
H6 C5 C7 118.983 C7 C9 C10 179.130
H8 C7 C9 115.953 C9 C10 H11 179.930
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HF/6-31G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.503 -0.035    
2 H 0.173 0.031    
3 H 0.173 0.031    
4 H 0.170 0.029    
5 C -0.119 -0.046    
6 H 0.195 0.107    
7 C -0.005 -0.252    
8 H 0.208 0.161    
9 C -0.145 0.161    
10 C -0.493 -0.483    
11 H 0.347 0.295    


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -0.992 -0.352 0.000 1.052
CHELPG -0.912 -0.310 0.000 0.963
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -25.067 -0.028 0.000
y -0.028 -29.720 0.000
z 0.000 0.000 -33.132
Traceless
 xyz
x 6.359 -0.028 0.000
y -0.028 -0.621 0.000
z 0.000 0.000 -5.738
Polar
3z2-r2-11.477
x2-y24.654
xy-0.028
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 12.216 1.678 0.000
y 1.678 5.932 0.000
z 0.000 0.000 3.386


<r2> (average value of r2) Å2
<r2> 158.366
(<r2>)1/2 12.584