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All results from a given calculation for C4H6 (Methylenecyclopropane)

using model chemistry: HF/aug-cc-pVTZ

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 1A1
Energy calculated at HF/aug-cc-pVTZ
 hartrees
Energy at 0K-154.944285
Energy at 298.15K-154.950327
Nuclear repulsion energy110.278013
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 HF/aug-cc-pVTZ
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
4/u)
Dep P Dep U
1 A1 3275 2981 12.93      
2 A1 3255 2963 16.04      
3 A1 1965 1789 11.25      
4 A1 1611 1467 1.56      
5 A1 1562 1422 0.40      
6 A1 1157 1053 0.00      
7 A1 1125 1024 4.56      
8 A1 792 721 10.37      
9 A2 3322 3024 0.00      
10 A2 1269 1156 0.00      
11 A2 1036 943 0.00      
12 A2 669 609 0.00      
13 B1 3336 3037 19.94      
14 B1 1197 1089 2.81      
15 B1 1046 953 53.50      
16 B1 808 735 2.28      
17 B1 338 307 5.76      
18 B2 3353 3052 12.74      
19 B2 3250 2958 20.82      
20 B2 1571 1430 2.01      
21 B2 1240 1129 6.83      
22 B2 1195 1088 0.30      
23 B2 970 883 18.12      
24 B2 385 351 0.19      

Unscaled Zero Point Vibrational Energy (zpe) 19862.0 cm-1
Scaled (by 0.9104) Zero Point Vibrational Energy (zpe) 18082.3 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 HF/aug-cc-pVTZ
ABC
0.66313 0.23332 0.18509

See section I.F.4 to change rotational constant units
Geometric Data calculated at HF/aug-cc-pVTZ

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 1.622
C2 0.000 0.000 0.317
H3 0.000 0.918 2.180
H4 0.000 -0.918 2.180
C5 0.000 0.764 -0.926
C6 0.000 -0.764 -0.926
H7 0.904 1.263 -1.223
H8 -0.904 1.263 -1.223
H9 -0.904 -1.263 -1.223
H10 0.904 -1.263 -1.223

Atom - Atom Distances (Å)
  C1 C2 H3 H4 C5 C6 H7 H8 H9 H10
C11.30511.07431.07432.66002.66003.24133.24133.24133.2413
C21.30512.07672.07671.45881.45882.18722.18722.18722.1872
H31.07432.07671.83653.10943.53183.53753.53754.14154.1415
H41.07432.07671.83653.53183.10944.14154.14153.53753.5375
C52.66001.45883.10943.53181.52731.07481.07482.23892.2389
C62.66001.45883.53183.10941.52732.23892.23891.07481.0748
H73.24132.18723.53754.14151.07482.23891.80863.10652.5257
H83.24132.18723.53754.14151.07482.23891.80862.52573.1065
H93.24132.18724.14153.53752.23891.07483.10652.52571.8086
H103.24132.18724.14153.53752.23891.07482.52573.10651.8086

picture of Methylenecyclopropane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 C5 148.434 C1 C2 C6 148.434
C2 C1 H3 121.265 C2 C1 H4 121.265
C2 C5 C6 58.434 C2 C5 H7 118.590
C2 C5 H8 118.590 C2 C6 C5 58.434
C2 C6 H9 118.590 C2 C6 H10 118.590
H3 C1 H4 117.469 C5 C2 C6 63.132
C5 C6 H9 117.675 C5 C6 H10 117.675
C6 C5 H7 117.675 C6 C5 H8 117.675
H7 C5 H8 114.575 H9 C6 H10 114.575
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HF/aug-cc-pVTZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.683      
2 C 0.736      
3 H 0.344      
4 H 0.344      
5 C -1.028      
6 C -1.028      
7 H 0.329      
8 H 0.329      
9 H 0.329      
10 H 0.329      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.000 0.000 -0.481 0.481
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -25.833 0.000 0.000
y 0.000 -24.516 0.000
z 0.000 0.000 -24.763
Traceless
 xyz
x -1.194 0.000 0.000
y 0.000 0.782 0.000
z 0.000 0.000 0.412
Polar
3z2-r20.823
x2-y2-1.317
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 5.465 0.000 0.000
y 0.000 6.539 0.000
z 0.000 0.000 9.309


<r2> (average value of r2) Å2
<r2> 76.134
(<r2>)1/2 8.725