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

using model chemistry: G4

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at G4
 hartrees
Energy at 0K-193.926156
Energy at 298.15K-193.919308
HF Energy-194.072360
Nuclear repulsion energy141.331914
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 B3LYP/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' 3505 3382 72.68      
2 A' 3165 3054 25.48      
3 A' 3145 3035 0.92      
4 A' 3127 3017 3.63      
5 A' 3022 2916 20.87      
6 A' 2217 2140 1.06      
7 A' 1690 1631 6.25      
8 A' 1481 1429 6.56      
9 A' 1429 1379 4.34      
10 A' 1396 1347 5.79      
11 A' 1266 1222 0.01      
12 A' 1120 1080 0.31      
13 A' 974 940 17.94      
14 A' 904 872 2.57      
15 A' 664 641 4.82      
16 A' 642 619 38.27      
17 A' 377 364 5.54      
18 A' 161 155 0.11      
19 A" 3067 2960 16.67      
20 A" 1482 1430 4.90      
21 A" 1063 1026 0.51      
22 A" 993 958 0.57      
23 A" 762 735 15.07      
24 A" 582 562 53.64      
25 A" 508 490 2.43      
26 A" 282 272 0.76      
27 A" 149 144 0.62      

Unscaled Zero Point Vibrational Energy (zpe) 19585.6 cm-1
Scaled (by 0.965) Zero Point Vibrational Energy (zpe) 18900.1 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 B3LYP/6-31G(2df,p)
ABC
0.40464 0.11056 0.08825

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3LYP/6-31G(2df,p)

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
H1 3.164 -0.910 0.000
C2 2.248 -0.373 0.000
C3 1.204 0.231 0.000
H4 0.116 2.062 0.000
C5 0.000 0.981 0.000
H6 -2.073 1.154 0.000
C7 -1.236 0.460 0.000
H8 -0.680 -1.618 0.000
H9 -2.182 -1.254 0.879
H10 -2.182 -1.254 -0.879
C11 -1.577 -0.996 0.000

Atom - Atom Distances (Å)
  H1 C2 C3 H4 C5 H6 C7 H8 H9 H10 C11
H11.06172.26744.25753.68595.62944.60823.90875.42835.42834.7420
C21.06171.20573.23712.62434.58333.58213.18174.60114.60113.8756
C32.26741.20572.13081.41903.40542.45112.64003.80033.80033.0401
H44.25753.23712.13081.08762.36982.09653.76564.12884.12883.4955
C53.68592.62431.41901.08762.08051.34132.68663.24443.24442.5289
H65.62944.58333.40542.36982.08051.08793.10302.56582.56582.2067
C74.60823.58212.45112.09651.34131.08792.15112.14552.14551.4951
H83.90873.18172.64003.76562.68663.10302.15111.77761.77761.0920
H95.42834.60113.80034.12883.24442.56582.14551.77761.75741.0973
H105.42834.60113.80034.12883.24442.56582.14551.77761.75741.0973
C114.74203.87563.04013.49552.52892.20671.49511.09201.09731.0973

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 179.687 C2 C3 C5 176.847
C3 C5 H4 115.445 C3 C5 C7 125.021
H4 C5 C7 119.535 C5 C7 H6 117.569
C5 C7 C11 126.346 H6 C7 C11 116.085
C7 C11 H8 111.492 C7 C11 H9 110.588
C7 C11 H10 110.588 H8 C11 H9 108.656
H8 C11 H10 108.656 H9 C11 H10 106.712
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3LYP/6-31G(2df,p) Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 H 0.199      
2 C -0.450      
3 C 0.293      
4 H 0.112      
5 C -0.199      
6 H 0.098      
7 C 0.000      
8 H 0.140      
9 H 0.131      
10 H 0.131      
11 C -0.455      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -0.725 -0.158 0.000 0.742
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å


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


<r2> (average value of r2) Å2
<r2> 133.139
(<r2>)1/2 11.539