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

using model chemistry: MP2/3-21G

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at MP2/3-21G
 hartrees
Energy at 0K-192.126892
Energy at 298.15K-192.131166
HF Energy-191.675571
Nuclear repulsion energy140.164924
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 MP2/3-21G
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' 3478 3319 45.30      
2 A' 3201 3056 22.33      
3 A' 3178 3034 2.95      
4 A' 3164 3020 2.86      
5 A' 3078 2938 12.81      
6 A' 2121 2024 1.86      
7 A' 1668 1592 0.81      
8 A' 1585 1513 4.92      
9 A' 1489 1421 7.29      
10 A' 1473 1406 3.26      
11 A' 1322 1262 0.62      
12 A' 1158 1105 2.74      
13 A' 967 923 15.71      
14 A' 877 837 1.22      
15 A' 675 644 3.21      
16 A' 645 615 45.85      
17 A' 369 352 5.04      
18 A' 156 149 0.39      
19 A" 3137 2994 16.35      
20 A" 1590 1518 7.61      
21 A" 1131 1079 0.19      
22 A" 993 948 0.26      
23 A" 763 728 26.80      
24 A" 567 541 72.39      
25 A" 427 407 0.34      
26 A" 195 186 0.10      
27 A" 131 125 0.51      

Unscaled Zero Point Vibrational Energy (zpe) 19768.0 cm-1
Scaled (by 0.9545) Zero Point Vibrational Energy (zpe) 18868.6 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 MP2/3-21G
ABC
0.38689 0.11049 0.08736

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2/3-21G

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
H1 3.151 -0.992 0.000
C2 2.248 -0.427 0.000
C3 1.209 0.224 0.000
H4 0.129 2.091 0.000
C5 0.000 1.010 0.000
H6 -2.091 1.175 0.000
C7 -1.246 0.489 0.000
H8 -0.658 -1.586 0.000
H9 -2.167 -1.254 0.887
H10 -2.167 -1.254 -0.887
C11 -1.577 -0.992 0.000

Atom - Atom Distances (Å)
  H1 C2 C3 H4 C5 H6 C7 H8 H9 H10 C11
H11.06512.29114.31673.73345.67244.64013.85495.39825.39824.7283
C21.06511.22603.29052.66834.62563.61273.12874.57924.57923.8672
C32.29111.22602.15681.44243.43452.46972.59963.79073.79073.0400
H44.31673.29052.15681.08812.40152.11143.75944.15304.15303.5237
C53.73342.66831.44241.08812.09751.35102.67773.25733.25732.5490
H65.67244.62563.43452.40152.09751.08843.11052.58712.58712.2276
C74.64013.61272.46972.11141.35101.08842.15622.16142.16141.5176
H83.85493.12872.59963.75942.67773.11052.15621.78171.78171.0941
H95.39824.57923.79074.15303.25732.58712.16141.78171.77311.0967
H105.39824.57923.79074.15303.25732.58712.16141.78171.77311.0967
C114.72833.86723.04003.52372.54902.22761.51761.09411.09671.0967

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 179.979 C2 C3 C5 178.988
C3 C5 H4 116.223 C3 C5 C7 124.255
H4 C5 C7 119.522 C5 C7 H6 118.201
C5 C7 C11 125.291 H6 C7 C11 116.508
C7 C11 H8 110.238 C7 C11 H9 110.502
C7 C11 H10 110.502 H8 C11 H9 108.829
H8 C11 H10 108.829 H9 C11 H10 107.878
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at MP2/3-21G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 H 0.280     0.299
2 C -0.330     -0.479
3 C -0.034     0.241
4 H 0.217     0.204
5 C -0.204     -0.426
6 H 0.191     0.089
7 C -0.135     0.061
8 H 0.212     0.109
9 H 0.199     0.095
10 H 0.199     0.095
11 C -0.595     -0.288


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -0.521 -0.154 0.000 0.544
CHELPG        
AIM        
ESP -0.516 -0.164 0.000 0.541


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -26.433 -2.126 0.000
y -2.126 -28.996 0.000
z 0.000 0.000 -33.439
Traceless
 xyz
x 4.784 -2.126 0.000
y -2.126 0.940 0.000
z 0.000 0.000 -5.725
Polar
3z2-r2-11.449
x2-y22.563
xy-2.126
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 9.965 -0.848 0.000
y -0.848 5.919 0.000
z 0.000 0.000 2.989


<r2> (average value of r2) Å2
<r2> 134.740
(<r2>)1/2 11.608