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

using model chemistry: B1B95/3-21G

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at B1B95/3-21G
 hartrees
Energy at 0K-192.887104
Energy at 298.15K-192.891723
Nuclear repulsion energy141.730336
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 B1B95/3-21G
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' 3505 3353 64.66      
2 A' 3204 3066 18.65      
3 A' 3182 3044 0.32      
4 A' 3155 3019 2.41      
5 A' 3055 2922 13.18      
6 A' 2234 2137 1.12      
7 A' 1700 1627 4.37      
8 A' 1538 1472 12.13      
9 A' 1459 1396 9.38      
10 A' 1446 1383 7.33      
11 A' 1296 1240 0.66      
12 A' 1147 1098 1.99      
13 A' 982 940 22.61      
14 A' 908 868 1.58      
15 A' 737 705 49.84      
16 A' 680 651 2.52      
17 A' 382 366 7.94      
18 A' 163 156 0.53      
19 A" 3108 2973 13.23      
20 A" 1544 1477 11.76      
21 A" 1099 1051 0.07      
22 A" 1009 966 0.62      
23 A" 769 735 46.63      
24 A" 697 666 46.55      
25 A" 517 495 19.99      
26 A" 274 262 2.08      
27 A" 141 134 1.00      

Unscaled Zero Point Vibrational Energy (zpe) 19965.6 cm-1
Scaled (by 0.9567) Zero Point Vibrational Energy (zpe) 19101.1 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 B1B95/3-21G
ABC
0.39438 0.11375 0.08977

See section I.F.4 to change rotational constant units
Geometric Data calculated at B1B95/3-21G

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
H1 3.116 -0.977 0.000
C2 2.216 -0.416 0.000
C3 1.189 0.222 0.000
H4 0.132 2.078 0.000
C5 0.000 1.000 0.000
H6 -2.082 1.162 0.000
C7 -1.236 0.481 0.000
H8 -0.626 -1.573 0.000
H9 -2.138 -1.253 0.883
H10 -2.138 -1.253 -0.883
C11 -1.546 -0.984 0.000

Atom - Atom Distances (Å)
  H1 C2 C3 H4 C5 H6 C7 H8 H9 H10 C11
H11.06122.26994.27093.69065.62104.58993.78905.33485.33484.6620
C21.06121.20873.24972.62954.57813.56623.06804.52054.52053.8044
C32.26991.20872.13621.42103.40312.43842.55163.74423.74422.9886
H44.27093.24972.13621.08592.39612.10293.72844.12624.12623.4918
C53.69062.62951.42101.08592.08831.34062.64783.22893.22892.5155
H65.62104.57813.40312.39612.08831.08603.09782.57132.57132.2119
C74.58993.56622.43842.10291.34061.08602.14212.14432.14431.4976
H83.78903.06802.55163.72842.64783.09782.14211.77991.77991.0920
H95.33484.52053.74424.12623.22892.57132.14431.77991.76571.0963
H105.33484.52053.74424.12623.22892.57132.14431.77991.76571.0963
C114.66203.80442.98863.49182.51552.21191.49761.09201.09631.0963

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 179.859 C2 C3 C5 178.583
C3 C5 H4 116.250 C3 C5 C7 123.978
H4 C5 C7 119.772 C5 C7 H6 118.384
C5 C7 C11 124.736 H6 C7 C11 116.880
C7 C11 H8 110.649 C7 C11 H9 110.566
C7 C11 H10 110.566 H8 C11 H9 108.850
H8 C11 H10 108.850 H9 C11 H10 107.269
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B1B95/3-21G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 H 0.268      
2 C -0.366      
3 C 0.036      
4 H 0.237      
5 C -0.260      
6 H 0.213      
7 C -0.158      
8 H 0.238      
9 H 0.226      
10 H 0.226      
11 C -0.659      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -0.753 -0.199 0.000 0.778
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -25.280 -2.151 0.000
y -2.151 -27.895 0.000
z 0.000 0.000 -32.859
Traceless
 xyz
x 5.096 -2.151 0.000
y -2.151 1.175 0.000
z 0.000 0.000 -6.271
Polar
3z2-r2-12.542
x2-y22.614
xy-2.151
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 11.257 -0.852 0.000
y -0.852 6.161 0.000
z 0.000 0.000 3.053


<r2> (average value of r2) Å2
<r2> 131.272
(<r2>)1/2 11.457