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All results from a given calculation for C4H6 (Methylenecyclopropane)

using model chemistry: MP2/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 MP2/aug-cc-pVTZ
 hartrees
Energy at 0K-155.610337
Energy at 298.15K-155.616084
HF Energy-154.943472
Nuclear repulsion energy109.467265
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 MP2/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 3167 3018 10.10      
2 A1 3160 3011 5.38      
3 A1 1834 1747 3.11      
4 A1 1493 1423 0.17      
5 A1 1452 1384 0.71      
6 A1 1068 1018 4.77      
7 A1 1024 976 4.27      
8 A1 749 713 4.83      
9 A2 3246 3093 0.00      
10 A2 1170 1115 0.00      
11 A2 961 916 0.00      
12 A2 619 590 0.00      
13 B1 3258 3105 5.17      
14 B1 1097 1045 3.13      
15 B1 923 879 40.67      
16 B1 752 717 2.07      
17 B1 279 266 4.63      
18 B2 3262 3108 5.60      
19 B2 3157 3008 7.46      
20 B2 1457 1388 2.41      
21 B2 1147 1093 6.22      
22 B2 1062 1012 0.98      
23 B2 917 874 15.52      
24 B2 352 335 0.29      

Unscaled Zero Point Vibrational Energy (zpe) 18801.5 cm-1
Scaled (by 0.9529) Zero Point Vibrational Energy (zpe) 17915.9 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 MP2/aug-cc-pVTZ
ABC
0.65346 0.22977 0.18238

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2/aug-cc-pVTZ

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 1.652
C2 0.000 0.000 0.306
H3 0.000 0.895 2.170
H4 0.000 -0.895 2.170
C5 0.000 0.748 -0.892
C6 0.000 -0.748 -0.892
H7 0.918 0.927 -1.345
H8 -0.918 0.927 -1.345
H9 -0.918 -0.927 -1.345
H10 0.918 -0.927 -1.345

Atom - Atom Distances (Å)
  C1 C2 H3 H4 C5 C6 H7 H8 H9 H10
C11.34571.03461.03462.65142.65143.26813.26813.26813.2681
C21.34572.06792.06791.41221.41222.10392.10392.10392.1039
H31.03462.06791.79093.06553.47503.63273.63274.06414.0641
H41.03462.06791.79093.47503.06554.06414.06413.63273.6327
C52.65141.41223.06553.47501.49541.03891.03891.96261.9626
C62.65141.41223.47503.06551.49541.96261.96261.03891.0389
H73.26812.10393.63274.06411.03891.96261.83542.60881.8540
H83.26812.10393.63274.06411.03891.96261.83541.85402.6088
H93.26812.10394.06413.63271.96261.03892.60881.85401.8354
H103.26812.10394.06413.63271.96261.03891.85402.60881.8354

picture of Methylenecyclopropane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 C5 148.032 C1 C2 C6 148.032
C2 C1 H3 120.060 C2 C1 H4 120.060
C2 C5 C6 58.032 C2 C5 H7 117.457
C2 C5 H8 117.457 C2 C6 C5 58.032
C2 C6 H9 117.457 C2 C6 H10 117.457
H3 C1 H4 119.880 C5 C2 C6 63.936
C5 C6 H9 99.940 C5 C6 H10 99.940
C6 C5 H7 99.940 C6 C5 H8 99.940
H7 C5 H8 124.096 H9 C6 H10 124.096
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability