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All results from a given calculation for C5H6 (Cyclopropylacetylene)

using model chemistry: B3LYP/CEP-121G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C1 1A'
Energy calculated at B3LYP/CEP-121G*
 hartrees
Energy at 0K-31.759535
Energy at 298.15K-31.764803
Nuclear repulsion energy76.395722
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/CEP-121G*
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 3454 3348 64.83      
2 A 3219 3120 26.10      
3 A 3132 3036 11.46      
4 A 3119 3024 13.09      
5 A 2177 2110 21.43      
6 A 1502 1456 0.55      
7 A 1369 1327 6.46      
8 A 1197 1160 1.00      
9 A 1130 1096 0.66      
10 A 1049 1017 5.87      
11 A 944 915 22.87      
12 A 802 777 1.99      
13 A 746 723 4.26      
14 A 705 683 68.61      
15 A 507 491 10.91      
16 A 209 203 1.12      
17 A 3204 3106 0.03      
18 A 3115 3019 30.08      
19 A 1467 1422 1.42      
20 A 1193 1156 0.70      
21 A 1107 1073 2.13      
22 A 1060 1027 6.05      
23 A 891 863 0.86      
24 A 807 783 12.27      
25 A 676 656 72.28      
26 A 548 531 12.38      
27 A 226 219 1.84      

Unscaled Zero Point Vibrational Energy (zpe) 19775.2 cm-1
Scaled (by 0.9694) Zero Point Vibrational Energy (zpe) 19170.1 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/CEP-121G*
ABC
0.52192 0.10941 0.10380

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3LYP/CEP-121G*

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.630 0.000
C2 -1.150 -0.255 0.000
H3 -0.240 1.693 0.000
C4 1.272 0.224 0.758
C5 1.272 0.224 -0.758
C6 -2.124 -0.981 0.000
H7 -2.975 -1.625 0.000
H8 1.812 1.015 1.275
H9 1.255 -0.734 1.272
H10 1.812 1.015 -1.275
H11 1.255 -0.734 -1.272

Atom - Atom Distances (Å)
  C1 C2 H3 C4 C5 C6 H7 H8 H9 H10 H11
C11.45091.09011.53541.53542.66553.73352.24892.24782.24892.2478
C21.45092.15012.58272.58271.21472.28263.46562.76233.46562.7623
H31.09012.15012.24052.24053.27104.30062.50933.12152.50933.1215
C41.53542.58272.24051.51553.68214.69421.08841.08742.24732.2444
C51.53542.58272.24051.51553.68214.69422.24732.24441.08841.0874
C62.66551.21473.27103.68213.68211.06804.59323.61844.59323.6184
H73.73352.28264.30064.69424.69421.06805.61374.50625.61374.5062
H82.24893.46562.50931.08842.24734.59325.61371.83552.55093.1397
H92.24782.76233.12151.08742.24443.61844.50621.83553.13972.5436
H102.24893.46562.50932.24731.08844.59325.61372.55093.13971.8355
H112.24782.76233.12152.24441.08743.61844.50623.13972.54361.8355

picture of Cyclopropylacetylene state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 C6 179.146 C1 C4 C5 60.428
C1 C4 H8 116.960 C1 C4 H9 116.938
C1 C5 C4 60.428 C1 C5 H10 116.960
C1 C5 H11 116.938 C2 C1 H3 114.851
C2 C1 C4 119.703 C2 C1 C5 119.703
C2 C6 H7 179.609 H3 C1 C4 116.127
H3 C1 C5 116.127 C4 C1 C5 59.143
C4 C5 H10 118.403 C4 C5 H11 118.215
C5 C4 H8 118.403 C5 C4 H9 118.215
H8 C4 H9 115.039 H10 C5 H11 115.039
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3LYP/CEP-121G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.114      
2 C 0.433      
3 H 0.219      
4 C -0.420      
5 C -0.420      
6 C -1.075      
7 H 0.402      
8 H 0.179      
9 H 0.195      
10 H 0.179      
11 H 0.195      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.880 0.366 0.000 0.953
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -28.787 2.783 0.000
y 2.783 -27.761 0.000
z 0.000 0.000 -31.540
Traceless
 xyz
x 0.864 2.783 0.000
y 2.783 2.402 0.000
z 0.000 0.000 -3.266
Polar
3z2-r2-6.532
x2-y2-1.026
xy2.783
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 10.252 2.247 0.000
y 2.247 7.155 0.000
z 0.000 0.000 6.190


<r2> (average value of r2) Å2
<r2> 99.066
(<r2>)1/2 9.953