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

using model chemistry: MP2/6-31G

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at MP2/6-31G
 hartrees
Energy at 0K-193.126531
Energy at 298.15K-193.131250
HF Energy-192.673872
Nuclear repulsion energy139.386893
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 MP2/6-31G
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' 3475 3325 40.92      
2 A' 3194 3056 36.10      
3 A' 3169 3032 6.13      
4 A' 3149 3013 7.05      
5 A' 3052 2920 21.43      
6 A' 2104 2013 2.09      
7 A' 1680 1607 1.35      
8 A' 1563 1495 5.08      
9 A' 1487 1422 6.19      
10 A' 1460 1397 4.49      
11 A' 1315 1258 0.43      
12 A' 1157 1107 1.35      
13 A' 989 947 15.79      
14 A' 900 861 1.30      
15 A' 668 639 2.96      
16 A' 602 576 56.20      
17 A' 360 345 3.49      
18 A' 154 147 0.24      
19 A" 3120 2985 24.17      
20 A" 1557 1490 7.40      
21 A" 1118 1070 0.87      
22 A" 972 930 0.11      
23 A" 757 724 23.91      
24 A" 524 501 68.43      
25 A" 360 344 9.63      
26 A" 127 122 0.89      

Unscaled Zero Point Vibrational Energy (zpe) 19506.0 cm-1
Scaled (by 0.9568) Zero Point Vibrational Energy (zpe) 18663.4 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 MP2/6-31G
ABC
0.39022 0.10780 0.08583

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2/6-31G

Point Group is C1

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
H1 3.190 -0.971 0.000
C2 2.277 -0.413 0.000
C3 1.220 0.229 0.000
H4 0.118 2.090 0.000
C5 0.000 1.005 0.000
H6 -2.098 1.175 0.000
C7 -1.255 0.480 0.000
H8 -0.686 -1.606 0.000
H9 -2.193 -1.261 0.887
H10 -2.193 -1.261 -0.887
C11 -1.598 -0.995 0.000

Atom - Atom Distances (Å)
  H1 C2 C3 H4 C5 H6 C7 H8 H9 H10 C11
H11.07022.30714.33733.75275.70704.67623.92725.46325.46324.7878
C21.07021.23683.30582.68244.65433.64353.19394.63534.63533.9183
C32.30711.23682.16311.44583.45002.48792.64553.82793.82793.0721
H44.33733.30582.16311.09182.39762.11693.78314.16624.16623.5308
C53.75272.68241.44581.09182.10481.36092.69983.27553.27552.5602
H65.70704.65433.45002.39762.10481.09253.11952.59392.59392.2273
C74.67623.64352.48792.11691.36091.09252.16242.16662.16661.5142
H83.92723.19392.64553.78312.69983.11952.16241.78271.78271.0979
H95.46324.63533.82794.16623.27552.59392.16661.78271.77331.1004
H105.46324.63533.82794.16623.27552.59392.16661.78271.77331.1004
C114.78783.91833.07213.53082.56022.22731.51421.09791.10041.1004

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 179.811 C2 C3 C5 178.801
C3 C5 H4 116.257 C3 C5 C7 124.825
H4 C5 C7 118.918 C5 C7 H6 117.751
C5 C7 C11 125.776 H6 C7 C11 116.472
C7 C11 H8 110.746 C7 C11 H9 110.927
C7 C11 H10 110.927 H8 C11 H9 108.378
H8 C11 H10 108.378 H9 C11 H10 107.365
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability