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

using model chemistry: mPW1PW91/aug-cc-pVDZ

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C1 1A
Energy calculated at mPW1PW91/aug-cc-pVDZ
 hartrees
Energy at 0K-155.922358
Energy at 298.15K 
HF Energy-155.922358
Nuclear repulsion energy108.129153
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/aug-cc-pVDZ
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' 3300 3163 0.40 121.01 0.29 0.45
2 A' 3149 3017 15.74 82.34 0.72 0.84
3 A' 3049 2922 18.96 351.94 0.01 0.01
4 A' 3047 2920 93.55 76.38 0.41 0.58
5 A' 1887 1808 15.48 79.74 0.12 0.21
6 A' 1514 1451 4.79 9.16 0.33 0.50
7 A' 1458 1398 10.83 10.88 0.49 0.66
8 A' 1385 1327 0.23 6.94 0.52 0.69
9 A' 1208 1158 2.24 9.19 0.43 0.60
10 A' 1091 1046 11.61 8.19 0.15 0.27
11 A' 1064 1019 22.19 0.72 0.60 0.75
12 A' 989 948 10.74 7.15 0.16 0.28
13 A' 941 901 13.34 3.80 0.51 0.68
14 A' 692 663 1.08 14.85 0.56 0.72
15 A' 323 309 1.90 1.74 0.75 0.86
16 A" 3119 2989 0.47 81.79 0.75 0.86
17 A" 3115 2985 63.49 125.44 0.75 0.86
18 A" 1454 1394 8.87 5.39 0.75 0.86
19 A" 1111 1064 1.24 0.51 0.75 0.86
20 A" 1040 996 0.09 2.13 0.75 0.86
21 A" 979 938 2.43 0.74 0.75 0.86
22 A" 705 676 34.97 1.67 0.75 0.86
23 A" 293 281 13.84 0.26 0.75 0.86
24 A" 166 159 0.36 0.23 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 18538.7 cm-1
Scaled (by 0.9583) Zero Point Vibrational Energy (zpe) 17765.7 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/aug-cc-pVDZ
ABC
0.68832 0.21217 0.17305

See section I.F.4 to change rotational constant units
Geometric Data calculated at mPW1PW91/aug-cc-pVDZ

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.180 0.000
C2 -0.056 -1.327 0.000
C3 1.151 -0.423 0.000
C4 -0.827 1.398 0.000
H5 -0.338 -1.860 0.917
H6 -0.338 -1.860 -0.917
H7 2.233 -0.382 0.000
H8 -0.207 2.303 0.000
H9 -1.481 1.416 -0.883
H10 -1.481 1.416 0.883

Atom - Atom Distances (Å)
  C1 C2 C3 C4 H5 H6 H7 H8 H9 H10
C11.50761.29911.47252.26192.26192.30232.13312.12132.1213
C21.50761.50802.83211.09761.09762.47603.63283.21443.2144
C31.29911.50802.68832.26332.26331.08253.04503.32953.3295
C41.47252.83212.68833.42033.42033.53971.09641.09891.0989
H52.26191.09762.26333.42031.83403.10354.26483.90893.4701
H62.26191.09762.26333.42031.83403.10354.26483.47013.9089
H72.30232.47601.08253.53973.10353.10353.62774.21914.2191
H82.13313.63283.04501.09644.26484.26483.62771.78561.7856
H92.12133.21443.32951.09893.90893.47014.21911.78561.7657
H102.12133.21443.32951.09893.47013.90894.21911.78561.7657

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 51.037 H1 C2 C6 119.680
C2 C3 C6 24.892 C2 C3 C10 72.453
C2 C6 C3 35.330 C2 C6 H4 49.435
C2 C6 H5 33.334 C3 C2 C6 119.779
C3 C6 H4 51.709 C3 C6 H5 66.099
C3 C10 H7 9.438 C3 C10 H8 65.124
C3 C10 H9 74.623 H4 C6 H5 74.448
C6 C3 C10 86.468 H7 C10 H8 58.692
H7 C10 H9 77.922 H8 C10 H9 60.368
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at mPW1PW91/aug-cc-pVDZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.097      
2 C 0.706      
3 C 0.453      
4 C 0.070      
5 H -0.362      
6 H -0.362      
7 H -0.544      
8 H -0.047      
9 H -0.005      
10 H -0.005      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -0.167 0.914 0.000 0.929
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -23.579 -0.710 0.000
y -0.710 -25.274 0.000
z 0.000 0.000 -25.731
Traceless
 xyz
x 1.924 -0.710 0.000
y -0.710 -0.619 0.000
z 0.000 0.000 -1.304
Polar
3z2-r2-2.609
x2-y21.695
xy-0.710
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 7.725 -0.614 0.000
y -0.614 8.158 0.000
z 0.000 0.000 5.666


<r2> (average value of r2) Å2
<r2> 80.416
(<r2>)1/2 8.968