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/6-31G(2df,p)

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/6-31G(2df,p)
 hartrees
Energy at 0K-193.972185
Energy at 298.15K-193.976462
Nuclear repulsion energy140.364540
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/6-31G(2df,p)
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' 3433 3415 66.42      
2 A' 3083 3066 29.98      
3 A' 3059 3042 1.65      
4 A' 3047 3030 4.44      
5 A' 2946 2929 23.71      
6 A' 2141 2129 0.80      
7 A' 1620 1611 5.65      
8 A' 1444 1436 5.92      
9 A' 1390 1383 5.07      
10 A' 1360 1353 5.33      
11 A' 1236 1230 0.00      
12 A' 1089 1083 0.41      
13 A' 951 946 17.86      
14 A' 876 872 3.25      
15 A' 648 644 3.04      
16 A' 579 576 39.50      
17 A' 361 359 4.10      
18 A' 154 154 0.08      
19 A" 2983 2967 18.65      
20 A" 1445 1437 4.10      
21 A" 1029 1023 0.46      
22 A" 952 947 0.44      
23 A" 738 734 12.83      
24 A" 522 520 49.79      
25 A" 471 469 4.71      
26 A" 272 270 0.25      
27 A" 143 142 0.59      

Unscaled Zero Point Vibrational Energy (zpe) 18986.3 cm-1
Scaled (by 0.9945) Zero Point Vibrational Energy (zpe) 18881.9 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/6-31G(2df,p)
ABC
0.40311 0.10840 0.08681

See section I.F.4 to change rotational constant units
Geometric Data calculated at BLYP/6-31G(2df,p)

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
H1 3.198 -0.888 0.000
C2 2.273 -0.356 0.000
C3 1.211 0.238 0.000
H4 0.110 2.070 0.000
C5 0.000 0.980 0.000
H6 -2.089 1.155 0.000
C7 -1.248 0.454 0.000
H8 -0.689 -1.637 0.000
H9 -2.201 -1.271 0.883
H10 -2.201 -1.271 -0.883
C11 -1.591 -1.009 0.000

Atom - Atom Distances (Å)
  H1 C2 C3 H4 C5 H6 C7 H8 H9 H10 C11
H11.06702.28364.27593.70365.66754.64353.95825.48355.48354.7904
C21.06701.21673.24992.63674.61613.61273.22744.65114.65113.9193
C32.28361.21672.13751.42063.42482.46802.66903.83343.83343.0671
H44.27593.24992.13751.09512.38172.11023.79174.15684.15683.5178
C53.70362.63671.42061.09512.09611.35392.70623.26963.26962.5476
H65.66754.61613.42482.38172.09611.09463.12262.58362.58362.2203
C74.64353.61272.46802.11021.35391.09462.16432.15982.15981.5034
H83.95823.22742.66903.79172.70623.12262.16431.78851.78851.0988
H95.48354.65113.83344.15683.26962.58362.15981.78851.76651.1045
H105.48354.65113.83344.15683.26962.58362.15981.78851.76651.1045
C114.79043.91933.06713.51782.54762.22031.50341.09881.10451.1045

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 179.235 C2 C3 C5 177.664
C3 C5 H4 115.754 C3 C5 C7 125.620
H4 C5 C7 118.626 C5 C7 H6 117.368
C5 C7 C11 126.074 H6 C7 C11 116.558
C7 C11 H8 111.606 C7 C11 H9 110.895
C7 C11 H10 110.895 H8 C11 H9 108.527
H8 C11 H10 108.527 H9 C11 H10 106.198
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at BLYP/6-31G(2df,p) Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 H 0.175      
2 C -0.442      
3 C 0.334      
4 H 0.089      
5 C -0.196      
6 H 0.075      
7 C 0.034      
8 H 0.124      
9 H 0.117      
10 H 0.117      
11 C -0.427      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -0.693 -0.175 0.000 0.715
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -25.784 -1.776 0.000
y -1.776 -28.476 0.000
z 0.000 0.000 -31.929
Traceless
 xyz
x 4.419 -1.776 0.000
y -1.776 0.381 0.000
z 0.000 0.000 -4.800
Polar
3z2-r2-9.600
x2-y22.692
xy-1.776
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 12.808 -0.636 0.000
y -0.636 7.213 0.000
z 0.000 0.000 4.323


<r2> (average value of r2) Å2
<r2> 135.126
(<r2>)1/2 11.624