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All results from a given calculation for C4H6 (Methylenecyclopropane)

using model chemistry: PBEPBE/3-21G

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 1A1
Energy calculated at PBEPBE/3-21G
 hartrees
Energy at 0K-154.885628
Energy at 298.15K-154.891348
Nuclear repulsion energy108.235359
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 PBEPBE/3-21G
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 3075 3047 0.00      
2 A1 3073 3045 19.03      
3 A1 1798 1781 3.52      
4 A1 1479 1465 0.05      
5 A1 1450 1437 1.34      
6 A1 1026 1016 17.74      
7 A1 1004 995 0.00      
8 A1 704 697 4.71      
9 A2 3149 3120 0.00      
10 A2 1142 1132 0.00      
11 A2 952 943 0.00      
12 A2 618 613 0.00      
13 B1 3164 3135 11.24      
14 B1 1092 1082 0.02      
15 B1 906 898 51.43      
16 B1 751 744 2.30      
17 B1 309 307 5.63      
18 B2 3152 3124 11.83      
19 B2 3071 3043 8.25      
20 B2 1445 1432 3.01      
21 B2 1139 1129 12.47      
22 B2 1058 1048 7.39      
23 B2 876 868 9.86      
24 B2 357 354 0.88      

Unscaled Zero Point Vibrational Energy (zpe) 18394.3 cm-1
Scaled (by 0.9909) Zero Point Vibrational Energy (zpe) 18226.9 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 PBEPBE/3-21G
ABC
0.63385 0.22578 0.17864

See section I.F.4 to change rotational constant units
Geometric Data calculated at PBEPBE/3-21G

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 1.648
C2 0.000 0.000 0.323
H3 0.000 0.934 2.220
H4 0.000 -0.934 2.220
C5 0.000 0.784 -0.941
C6 0.000 -0.784 -0.941
H7 0.925 1.285 -1.244
H8 -0.925 1.285 -1.244
H9 -0.925 -1.285 -1.244
H10 0.925 -1.285 -1.244

Atom - Atom Distances (Å)
  C1 C2 H3 H4 C5 C6 H7 H8 H9 H10
C11.32511.09521.09522.70422.70423.29633.29633.29633.2963
C21.32512.11462.11461.48641.48642.22682.22682.22682.2268
H31.09522.11461.86753.16393.59693.60203.60204.21584.2158
H41.09522.11461.86753.59693.16394.21584.21583.60203.6020
C52.70421.48643.16393.59691.56721.09461.09462.28582.2858
C62.70421.48643.59693.16391.56722.28582.28581.09461.0946
H73.29632.22683.60204.21581.09462.28581.84943.16582.5694
H83.29632.22683.60204.21581.09462.28581.84942.56943.1658
H93.29632.22684.21583.60202.28581.09463.16582.56941.8494
H103.29632.22684.21583.60202.28581.09462.56943.16581.8494

picture of Methylenecyclopropane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 C5 148.184 C1 C2 C6 148.184
C2 C1 H3 121.500 C2 C1 H4 121.500
C2 C5 C6 58.184 C2 C5 H7 118.473
C2 C5 H8 118.473 C2 C6 C5 58.184
C2 C6 H9 118.473 C2 C6 H10 118.473
H3 C1 H4 116.999 C5 C2 C6 63.632
C5 C6 H9 117.245 C5 C6 H10 117.245
C6 C5 H7 117.245 C6 C5 H8 117.245
H7 C5 H8 115.300 H9 C6 H10 115.300
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at PBEPBE/3-21G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.543      
2 C -0.009      
3 H 0.198      
4 H 0.198      
5 C -0.379      
6 C -0.379      
7 H 0.229      
8 H 0.229      
9 H 0.229      
10 H 0.229      


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 -0.358 0.358
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -25.330 0.000 0.000
y 0.000 -24.009 0.000
z 0.000 0.000 -24.114
Traceless
 xyz
x -1.268 0.000 0.000
y 0.000 0.713 0.000
z 0.000 0.000 0.556
Polar
3z2-r21.112
x2-y2-1.321
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 3.609 0.000 0.000
y 0.000 5.586 0.000
z 0.000 0.000 7.846


<r2> (average value of r2) Å2
<r2> 77.997
(<r2>)1/2 8.832