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All results from a given calculation for C4H6 (Methylenecyclopropane)

using model chemistry: BLYP/6-31G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 1A1
Energy calculated at BLYP/6-31G*
 hartrees
Energy at 0K-155.872011
Energy at 298.15K-155.877622
HF Energy-155.872011
Nuclear repulsion energy108.287684
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 BLYP/6-31G*
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 3063 3039 17.82      
2 A1 3035 3011 19.41      
3 A1 1781 1767 2.91      
4 A1 1473 1461 0.07      
5 A1 1435 1423 0.03      
6 A1 1035 1027 2.22      
7 A1 1013 1004 2.81      
8 A1 717 711 3.71      
9 A2 3098 3073 0.00      
10 A2 1143 1134 0.00      
11 A2 943 935 0.00      
12 A2 602 597 0.00      
13 B1 3111 3086 28.54      
14 B1 1074 1066 0.34      
15 B1 872 865 33.21      
16 B1 738 732 1.00      
17 B1 277 275 1.98      
18 B2 3135 3110 19.84      
19 B2 3036 3011 22.43      
20 B2 1441 1430 0.18      
21 B2 1119 1110 6.13      
22 B2 1039 1031 1.92      
23 B2 875 868 12.09      
24 B2 341 339 0.17      

Unscaled Zero Point Vibrational Energy (zpe) 18198.3 cm-1
Scaled (by 0.9919) Zero Point Vibrational Energy (zpe) 18050.9 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 BLYP/6-31G*
ABC
0.63985 0.22499 0.17844

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

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 1.658
C2 0.000 0.000 0.308
H3 0.000 0.897 2.180
H4 0.000 -0.897 2.180
C5 0.000 0.747 -0.896
C6 0.000 -0.747 -0.896
H7 0.920 0.924 -1.352
H8 -0.920 0.924 -1.352
H9 -0.920 -0.924 -1.352
H10 0.920 -0.924 -1.352

Atom - Atom Distances (Å)
  C1 C2 H3 H4 C5 C6 H7 H8 H9 H10
C11.35071.03741.03742.66102.66103.28033.28033.28033.2803
C21.35072.07572.07571.41631.41632.11042.11042.11042.1104
H31.03742.07571.79383.07903.48713.64933.64934.07834.0783
H41.03742.07571.79383.48713.07904.07834.07833.64933.6493
C52.66101.41633.07903.48711.49371.04201.04201.96121.9612
C62.66101.41633.48713.07901.49371.96121.96121.04201.0420
H73.28032.11043.64934.07831.04201.96121.84012.60801.8482
H83.28032.11043.64934.07831.04201.96121.84011.84822.6080
H93.28032.11044.07833.64931.96121.04202.60801.84821.8401
H103.28032.11044.07833.64931.96121.04201.84822.60801.8401

picture of Methylenecyclopropane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 C5 148.175 C1 C2 C6 148.175
C2 C1 H3 120.166 C2 C1 H4 120.166
C2 C5 C6 58.175 C2 C5 H7 117.483
C2 C5 H8 117.483 C2 C6 C5 58.175
C2 C6 H9 117.483 C2 C6 H10 117.483
H3 C1 H4 119.668 C5 C2 C6 63.651
C5 C6 H9 99.794 C5 C6 H10 99.794
C6 C5 H7 99.794 C6 C5 H8 99.794
H7 C5 H8 124.000 H9 C6 H10 124.000
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at BLYP/6-31G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.410      
2 C 0.241      
3 H 0.121      
4 H 0.121      
5 C -0.327      
6 C -0.327      
7 H 0.145      
8 H 0.145      
9 H 0.145      
10 H 0.145      


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 -0.417 0.417
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -24.936 0.000 0.000
y 0.000 -24.117 0.000
z 0.000 0.000 -24.510
Traceless
 xyz
x -0.623 0.000 0.000
y 0.000 0.606 0.000
z 0.000 0.000 0.017
Polar
3z2-r20.033
x2-y2-0.819
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 4.044 0.000 0.000
y 0.000 5.950 0.000
z 0.000 0.000 8.420


<r2> (average value of r2) Å2
<r2> 78.118
(<r2>)1/2 8.838