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All results from a given calculation for C4H6 (Methylenecyclopropane)

using model chemistry: mPW1PW91/6-311G**

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 1A1
Energy calculated at mPW1PW91/6-311G**
 hartrees
Energy at 0K-155.963958
Energy at 298.15K-155.969737
Nuclear repulsion energy109.666783
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 mPW1PW91/6-311G**
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 3151 3014 12.22      
2 A1 3131 2995 12.14      
3 A1 1867 1786 8.28      
4 A1 1485 1420 0.05      
5 A1 1442 1380 1.54      
6 A1 1089 1042 2.77      
7 A1 1038 993 6.07      
8 A1 764 731 5.92      
9 A2 3205 3067 0.00      
10 A2 1171 1121 0.00      
11 A2 959 918 0.00      
12 A2 617 591 0.00      
13 B1 3218 3079 15.20      
14 B1 1099 1051 1.27      
15 B1 923 883 42.90      
16 B1 758 725 2.24      
17 B1 295 282 5.50      
18 B2 3237 3097 11.12      
19 B2 3129 2994 15.43      
20 B2 1446 1383 3.18      
21 B2 1148 1098 8.47      
22 B2 1073 1027 2.47      
23 B2 914 875 13.87      
24 B2 357 342 0.42      

Unscaled Zero Point Vibrational Energy (zpe) 18757.8 cm-1
Scaled (by 0.9567) Zero Point Vibrational Energy (zpe) 17945.6 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 mPW1PW91/6-311G**
ABC
0.65670 0.23078 0.18322

See section I.F.4 to change rotational constant units
Geometric Data calculated at mPW1PW91/6-311G**

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 1.632
C2 0.000 0.000 0.316
H3 0.000 0.927 2.194
H4 0.000 -0.927 2.194
C5 0.000 0.766 -0.929
C6 0.000 -0.766 -0.929
H7 0.912 1.271 -1.231
H8 -0.912 1.271 -1.231
H9 -0.912 -1.271 -1.231
H10 0.912 -1.271 -1.231

Atom - Atom Distances (Å)
  C1 C2 H3 H4 C5 C6 H7 H8 H9 H10
C11.31611.08451.08452.67342.67343.26193.26193.26193.2619
C21.31612.09502.09501.46191.46192.19952.19952.19952.1995
H31.08452.09501.85433.12803.55313.56103.56104.17054.1705
H41.08452.09501.85433.55313.12804.17054.17053.56103.5610
C52.67341.46193.12803.55311.53161.08511.08512.25162.2516
C62.67341.46193.55313.12801.53162.25162.25161.08511.0851
H73.26192.19953.56104.17051.08512.25161.82413.12822.5414
H83.26192.19953.56104.17051.08512.25161.82412.54143.1282
H93.26192.19954.17053.56102.25161.08513.12822.54141.8241
H103.26192.19954.17053.56102.25161.08512.54143.12821.8241

picture of Methylenecyclopropane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 C5 148.409 C1 C2 C6 148.409
C2 C1 H3 121.246 C2 C1 H4 121.246
C2 C5 C6 58.409 C2 C5 H7 118.695
C2 C5 H8 118.695 C2 C6 C5 58.409
C2 C6 H9 118.695 C2 C6 H10 118.695
H3 C1 H4 117.508 C5 C2 C6 63.183
C5 C6 H9 117.728 C5 C6 H10 117.728
C6 C5 H7 117.728 C6 C5 H8 117.728
H7 C5 H8 114.392 H9 C6 H10 114.392
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at mPW1PW91/6-311G** Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.242      
2 C -0.073      
3 H 0.118      
4 H 0.118      
5 C -0.253      
6 C -0.253      
7 H 0.146      
8 H 0.146      
9 H 0.146      
10 H 0.146      


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 -0.419 0.419
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -25.212 0.000 0.000
y 0.000 -24.136 0.000
z 0.000 0.000 -24.363
Traceless
 xyz
x -0.963 0.000 0.000
y 0.000 0.651 0.000
z 0.000 0.000 0.311
Polar
3z2-r20.623
x2-y2-1.076
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 4.489 0.000 0.000
y 0.000 6.160 0.000
z 0.000 0.000 8.768


<r2> (average value of r2) Å2
<r2> 76.520
(<r2>)1/2 8.748