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, (Z)-)

using model chemistry: BLYP/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 BLYP/cc-pVTZ
 hartrees
Energy at 0K-194.037675
Energy at 298.15K 
Nuclear repulsion energy140.535370
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 BLYP/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' 3400 3390 68.89      
2 A' 3078 3068 27.79      
3 A' 3056 3047 0.93      
4 A' 3036 3027 4.46      
5 A' 2943 2934 22.55      
6 A' 2122 2115 4.58      
7 A' 1613 1608 5.38      
8 A' 1446 1442 10.14      
9 A' 1395 1391 6.19      
10 A' 1368 1364 5.52      
11 A' 1240 1236 0.11      
12 A' 1091 1088 0.20      
13 A' 949 946 19.09      
14 A' 873 870 3.87      
15 A' 648 646 5.65      
16 A' 621 620 39.31      
17 A' 361 360 6.06      
18 A' 152 152 0.29      
19 A" 2973 2964 17.84      
20 A" 1447 1443 5.59      
21 A" 1032 1029 0.82      
22 A" 952 949 0.64      
23 A" 725 723 20.21      
24 A" 571 569 56.60      
25 A" 487 485 5.78      
26 A" 268 267 1.45      
27 A" 129 128 0.67      

Unscaled Zero Point Vibrational Energy (zpe) 18987.5 cm-1
Scaled (by 0.997) Zero Point Vibrational Energy (zpe) 18930.5 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 BLYP/cc-pVTZ
See section I.F.4 to change rotational constant units
Geometric Data calculated at BLYP/cc-pVTZ Cartesians (Å)
Atom x (Å) y (Å) z (Å)
H1 3.200 -0.883 0.000
C2 2.272 -0.357 0.000
C3 1.214 0.236 0.000
H4 0.109 2.064 0.000
C5 0.000 0.978 0.000
H6 -2.081 1.153 0.000
C7 -1.245 0.453 0.000
H8 -0.703 -1.640 0.000
H9 -2.204 -1.260 0.880
H10 -2.204 -1.260 -0.880
C11 -1.594 -1.006 0.000

Atom - Atom Distances (Å)
  H1 C2 C3 H4 C5 H6 C7 H8 H9 H10 C11
H11.06612.27994.27073.70195.65994.64093.97525.48755.48754.7957
C21.06611.21383.24712.63594.60813.60913.23994.65024.65023.9208
C32.27991.21382.13561.42253.41992.46782.68233.83303.83303.0706
H44.27073.24712.13561.09132.37222.10443.79264.14444.14443.5111
C53.70192.63591.42251.09132.08841.35092.71153.26233.26232.5456
H65.65994.60813.41992.37222.08841.09083.11522.57192.57192.2133
C74.64093.60912.46782.10441.35091.09082.16262.15172.15171.5004
H83.97523.23992.68233.79262.71153.11522.16261.78111.78111.0945
H95.48754.65023.83304.14443.26232.57192.15171.78111.76031.1002
H105.48754.65023.83304.14443.26232.57192.15171.78111.76031.1002
C114.79573.92083.07063.51112.54562.21331.50041.09451.10021.1002

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 179.730 C2 C3 C5 177.840
C3 C5 H4 115.701 C3 C5 C7 125.671
H4 C5 C7 118.628 C5 C7 H6 117.187
C5 C7 C11 126.370 H6 C7 C11 116.443
C7 C11 H8 111.949 C7 C11 H9 110.728
C7 C11 H10 110.728 H8 C11 H9 108.488
H8 C11 H10 108.488 H9 C11 H10 106.257
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at BLYP/cc-pVTZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 H 0.116      
2 C -0.268      
3 C 0.101      
4 H 0.105      
5 C -0.110      
6 H 0.098      
7 C -0.076      
8 H 0.101      
9 H 0.096      
10 H 0.096      
11 C -0.261      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -0.809 -0.186 0.000 0.830
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -26.591 -1.810 0.000
y -1.810 -29.275 0.000
z 0.000 0.000 -33.124
Traceless
 xyz
x 4.609 -1.810 0.000
y -1.810 0.583 0.000
z 0.000 0.000 -5.191
Polar
3z2-r2-10.382
x2-y22.684
xy-1.810
xz0.000
yz0.000


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


<r2> (average value of r2) Å2
<r2> 135.616
(<r2>)1/2 11.645