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

using model chemistry: MP2/cc-pVDZ

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/cc-pVDZ
 hartrees
Energy at 0K-193.423728
Energy at 298.15K-193.428092
HF Energy-192.759462
Nuclear repulsion energy140.023604
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/cc-pVDZ
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' 3495 3329 65.93      
2 A' 3224 3071 17.21      
3 A' 3204 3051 5.58      
4 A' 3192 3040 1.14      
5 A' 3076 2930 18.11      
6 A' 2116 2016 0.67      
7 A' 1689 1609 1.94      
8 A' 1479 1409 6.23      
9 A' 1428 1360 3.50      
10 A' 1384 1318 5.91      
11 A' 1254 1194 0.03      
12 A' 1120 1066 0.18      
13 A' 976 929 16.83      
14 A' 920 876 1.82      
15 A' 651 620 8.00      
16 A' 612 583 31.36      
17 A' 358 341 4.32      
18 A' 153 145 0.30      
19 A" 3158 3008 12.87      
20 A" 1481 1411 6.48      
21 A" 1056 1006 1.01      
22 A" 969 923 0.28      
23 A" 739 704 19.61      
24 A" 578 551 51.79      
25 A" 470 448 1.71      
26 A" 261 249 1.01      
27 A" 143 136 0.68      

Unscaled Zero Point Vibrational Energy (zpe) 19592.7 cm-1
Scaled (by 0.9525) Zero Point Vibrational Energy (zpe) 18662.1 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 MP2/cc-pVDZ
ABC
0.38877 0.11031 0.08734

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2/cc-pVDZ

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
H1 3.167 -0.996 0.000
C2 2.255 -0.426 0.000
C3 1.203 0.223 0.000
H4 0.123 2.098 0.000
C5 0.000 1.009 0.000
H6 -2.093 1.184 0.000
C7 -1.251 0.480 0.000
H8 -0.656 -1.595 0.000
H9 -2.174 -1.251 0.887
H10 -2.174 -1.251 -0.887
C11 -1.572 -0.985 0.000

Atom - Atom Distances (Å)
  H1 C2 C3 H4 C5 H6 C7 H8 H9 H10 C11
H11.07572.31134.34023.74815.69404.65753.86955.41955.41954.7392
C21.07571.23563.30362.67254.63653.62043.13694.59104.59103.8677
C32.31131.23562.16421.43713.43352.46682.59993.78923.78923.0265
H44.34023.30362.16421.09612.39802.12263.77494.15714.15713.5191
C53.74812.67251.43711.09612.10071.35782.68573.25883.25882.5397
H65.69404.63653.43352.39802.10071.09793.12872.59272.59272.2308
C74.65753.62042.46682.12261.35781.09792.15902.15332.15331.5005
H83.86953.13692.59993.77492.68573.12872.15901.79121.79121.1007
H95.41954.59103.78924.15713.25882.59272.15331.79121.77451.1042
H105.41954.59103.78924.15713.25882.59272.15331.79121.77451.1042
C114.73923.86773.02653.51912.53972.23081.50051.10071.10421.1042

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 179.630 C2 C3 C5 178.456
C3 C5 H4 116.727 C3 C5 C7 123.893
H4 C5 C7 119.380 C5 C7 H6 117.233
C5 C7 C11 125.305 H6 C7 C11 117.462
C7 C11 H8 111.266 C7 C11 H9 110.600
C7 C11 H10 110.600 H8 C11 H9 108.654
H8 C11 H10 108.654 H9 C11 H10 106.937
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability