return to home page Computational Chemistry Comparison and Benchmark DataBase Release 22 (May 2022) Standard Reference Database 101 National Institute of Standards and Technology
You are here: Calculated > Energy > Optimized > Energy

All results from a given calculation for C5H6 (Cyclopropylacetylene)

using model chemistry: LSDA/6-31+G**

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C1 1A'
Energy calculated at LSDA/6-31+G**
 hartrees
Energy at 0K-192.928214
Energy at 298.15K-192.933284
Nuclear repulsion energy147.511675
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 LSDA/6-31+G**
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 3410 3359 98.55      
2 A 3189 3141 2.80      
3 A 3092 3045 4.34      
4 A 3088 3042 1.16      
5 A 2188 2155 34.70      
6 A 1452 1430 1.45      
7 A 1346 1325 1.31      
8 A 1205 1187 0.77      
9 A 1105 1089 0.21      
10 A 1014 999 6.64      
11 A 977 963 33.14      
12 A 804 792 2.03      
13 A 750 739 1.85      
14 A 613 604 58.98      
15 A 503 495 10.47      
16 A 199 196 1.65      
17 A 3177 3129 0.22      
18 A 3087 3041 9.78      
19 A 1397 1376 6.85      
20 A 1149 1132 1.15      
21 A 1055 1040 2.24      
22 A 1024 1008 9.32      
23 A 895 881 2.44      
24 A 806 794 8.00      
25 A 546 538 73.60      
26 A 523 515 2.50      
27 A 209 206 1.97      

Unscaled Zero Point Vibrational Energy (zpe) 19400.7 cm-1
Scaled (by 0.985) Zero Point Vibrational Energy (zpe) 19109.7 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 LSDA/6-31+G**
ABC
0.53246 0.11201 0.10646

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.614 0.153 0.000
C2 -0.554 0.965 0.000
H3 1.563 0.705 0.000
C4 0.614 -1.162 0.744
C5 0.614 -1.162 -0.744
C6 -1.551 1.664 0.000
H7 -2.435 2.278 0.000
H8 1.534 -1.435 1.271
H9 -0.312 -1.431 1.261
H10 1.534 -1.435 -1.271
H11 -0.312 -1.431 -1.261

Atom - Atom Distances (Å)
  C1 C2 H3 C4 C5 C6 H7 H8 H9 H10 H11
C11.42261.09751.51151.51152.64063.71642.23292.22662.23292.2266
C21.42262.13292.53852.53851.21812.29393.42592.71833.42592.7183
H31.09752.13292.22292.22293.25894.29622.48993.10942.48993.1094
C41.51152.53852.22291.48863.63774.65691.09431.09402.23222.2248
C51.51152.53852.22291.48863.63774.65692.23222.22481.09431.0940
C62.64061.21813.25893.63773.63771.07584.55433.56454.55433.5645
H73.71642.29394.29624.65694.65691.07585.58174.45585.58174.4558
H82.23293.42592.48991.09432.23224.55435.58171.84552.54293.1332
H92.22662.71833.10941.09402.22483.56454.45581.84553.13322.5212
H102.23293.42592.48992.23221.09434.55435.58172.54293.13321.8455
H112.22662.71833.10942.22481.09403.56454.45583.13322.52121.8455

picture of Cyclopropylacetylene state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 C6 179.765 C1 C4 C5 60.501
C1 C4 H8 117.038 C1 C4 H9 116.508
C1 C5 C4 60.501 C1 C5 H10 117.038
C1 C5 H11 116.508 C2 C1 H3 115.030
C2 C1 C4 119.774 C2 C1 C5 119.774
C2 C6 H7 179.783 H3 C1 C4 115.949
H3 C1 C5 115.949 C4 C1 C5 58.998
C4 C5 H10 118.799 C4 C5 H11 118.159
C5 C4 H8 118.799 C5 C4 H9 118.159
H8 C4 H9 114.990 H10 C5 H11 114.990
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at LSDA/6-31+G** Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.001      
2 C 0.069      
3 H 0.206      
4 C -0.435      
5 C -0.435      
6 C -0.418      
7 H 0.229      
8 H 0.190      
9 H 0.202      
10 H 0.190      
11 H 0.202      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.691 -0.781 0.000 1.043
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -26.487 -2.003 0.000
y -2.003 -30.781 0.000
z 0.000 0.000 -31.991
Traceless
 xyz
x 4.899 -2.003 0.000
y -2.003 -1.542 0.000
z 0.000 0.000 -3.357
Polar
3z2-r2-6.715
x2-y24.294
xy-2.003
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 9.266 -2.747 0.000
y -2.747 9.316 0.000
z 0.000 0.000 6.804


<r2> (average value of r2) Å2
<r2> 0.000
(<r2>)1/2 0.000