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All results from a given calculation for C4H6 (1-Methylcyclopropene)

using model chemistry: HF/Def2TZVPP

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C1 1A
Energy calculated at HF/Def2TZVPP
 hartrees
Energy at 0K-154.928372
Energy at 298.15K 
HF Energy-154.928372
Nuclear repulsion energy109.144414
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/Def2TZVPP
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
(Å4/u)
Dep P Dep U
1 A' 3431 3110 0.90 92.96 0.30 0.47
2 A' 3240 2936 26.32 80.91 0.72 0.84
3 A' 3165 2869 23.31 279.33 0.00 0.00
4 A' 3163 2867 106.11 72.80 0.40 0.58
5 A' 1994 1807 21.20 71.40 0.15 0.26
6 A' 1646 1492 5.02 9.90 0.33 0.50
7 A' 1598 1449 8.39 10.27 0.62 0.76
8 A' 1529 1386 0.39 2.59 0.70 0.82
9 A' 1284 1163 5.64 6.64 0.49 0.66
10 A' 1190 1078 0.61 3.98 0.11 0.20
11 A' 1181 1070 43.02 2.19 0.15 0.26
12 A' 1049 951 3.10 9.65 0.33 0.50
13 A' 1027 931 19.39 9.84 0.24 0.38
14 A' 728 660 0.64 15.49 0.52 0.68
15 A' 349 317 1.69 1.40 0.74 0.85
16 A" 3218 2917 1.25 75.30 0.75 0.86
17 A" 3215 2914 85.03 106.76 0.75 0.86
18 A" 1597 1447 7.76 6.99 0.75 0.86
19 A" 1214 1100 2.54 0.94 0.75 0.86
20 A" 1149 1042 0.83 3.00 0.75 0.86
21 A" 1067 967 1.41 3.78 0.75 0.86
22 A" 843 764 43.43 1.49 0.75 0.86
23 A" 337 305 13.85 0.90 0.75 0.86
24 A" 173 157 0.29 0.23 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 19693.2 cm-1
Scaled (by 0.9064) Zero Point Vibrational Energy (zpe) 17849.9 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 HF/Def2TZVPP
ABC
0.70349 0.21479 0.17545

See section I.F.4 to change rotational constant units
Geometric Data calculated at HF/Def2TZVPP

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.171 0.000
C2 0.004 -1.323 0.000
C3 1.153 -0.366 0.000
C4 -0.883 1.357 0.000
H5 -0.251 -1.861 0.903
H6 -0.251 -1.861 -0.903
H7 2.215 -0.279 0.000
H8 -0.307 2.273 0.000
H9 -1.524 1.346 -0.874
H10 -1.524 1.346 0.874

Atom - Atom Distances (Å)
  C1 C2 C3 C4 H5 H6 H7 H8 H9 H10
C11.49401.27231.47862.23832.23832.26052.12452.11362.1136
C21.49401.49532.82291.08181.08182.44553.60953.19713.1971
C31.27231.49532.66762.24112.24111.06573.01683.29613.2961
C41.47862.82292.66763.40203.40203.50371.08191.08391.0839
H52.23831.08182.24113.40201.80563.06644.23253.88153.4512
H62.23831.08182.24113.40201.80563.06644.23253.45123.8815
H72.26052.44551.06573.50373.06643.06643.58854.16984.1698
H82.12453.60953.01681.08194.23254.23253.58851.76171.7617
H92.11363.19713.29611.08393.88153.45124.16981.76171.7477
H102.11363.19713.29611.08393.45123.88154.16981.76171.7477

picture of 1-Methylcyclopropene state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
H1 C2 C3 50.378 H1 C2 C6 119.825
C2 C3 C6 24.716 C2 C3 C10 73.022
C2 C6 C3 35.307 C2 C6 H4 49.548
C2 C6 H5 33.428 C3 C2 C6 119.976
C3 C6 H4 51.560 C3 C6 H5 66.244
C3 C10 H7 9.440 C3 C10 H8 65.224
C3 C10 H9 74.626 H4 C6 H5 74.611
C6 C3 C10 86.816 H7 C10 H8 58.788
H7 C10 H9 77.903 H8 C10 H9 60.262
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HF/Def2TZVPP Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.040      
2 C -0.089      
3 C -0.174      
4 C -0.126      
5 H 0.029      
6 H 0.029      
7 H 0.145      
8 H 0.075      
9 H 0.074      
10 H 0.074      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -0.162 0.909 0.000 0.923
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -23.588 -0.574 0.000
y -0.574 -25.491 0.000
z 0.000 0.000 -25.935
Traceless
 xyz
x 2.125 -0.574 0.000
y -0.574 -0.730 0.000
z 0.000 0.000 -1.395
Polar
3z2-r2-2.791
x2-y21.904
xy-0.574
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 7.108 -0.490 0.000
y -0.490 7.334 0.000
z 0.000 0.000 5.115


<r2> (average value of r2) Å2
<r2> 79.537
(<r2>)1/2 8.918