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

using model chemistry: B2PLYP=FULLultrafine/cc-pVTZ

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C1 1A
Energy calculated at B2PLYP=FULLultrafine/cc-pVTZ
 hartrees
Energy at 0K-155.866543
Energy at 298.15K 
HF Energy-155.631712
Nuclear repulsion energy108.555160
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 B2PLYP=FULLultrafine/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 A' 3297 3150 0.21 120.34 0.32 0.48
2 A' 3131 2991 16.63 83.44 0.71 0.83
3 A' 3062 2926 75.63 162.95 0.13 0.23
4 A' 3050 2914 24.05 206.96 0.01 0.03
5 A' 1854 1771 13.77 50.42 0.18 0.31
6 A' 1539 1470 5.56 12.49 0.33 0.50
7 A' 1499 1432 9.25 12.75 0.61 0.76
8 A' 1418 1354 0.13 6.47 0.56 0.72
9 A' 1198 1145 3.07 6.91 0.40 0.57
10 A' 1093 1045 1.77 2.84 0.13 0.23
11 A' 1070 1022 38.57 1.03 0.25 0.41
12 A' 986 942 3.73 8.72 0.29 0.45
13 A' 950 908 14.56 5.98 0.44 0.61
14 A' 678 647 0.56 14.44 0.58 0.74
15 A' 325 310 1.73 1.69 0.75 0.85
16 A" 3123 2984 45.49 100.50 0.75 0.86
17 A" 3103 2965 16.17 82.20 0.75 0.86
18 A" 1495 1428 7.84 7.82 0.75 0.86
19 A" 1131 1081 1.31 1.35 0.75 0.86
20 A" 1060 1013 0.33 2.61 0.75 0.86
21 A" 998 954 2.27 3.72 0.75 0.86
22 A" 734 701 30.60 0.75 0.75 0.86
23 A" 298 284 11.74 0.62 0.75 0.86
24 A" 164 156 0.34 0.30 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 18626.7 cm-1
Scaled (by 0.9554) Zero Point Vibrational Energy (zpe) 17795.9 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 B2PLYP=FULLultrafine/cc-pVTZ
ABC
0.69382 0.21335 0.17401

See section I.F.4 to change rotational constant units
Geometric Data calculated at B2PLYP=FULLultrafine/cc-pVTZ

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.178 0.000
C2 -0.037 -1.327 0.000
C3 1.153 -0.403 0.000
C4 -0.846 1.383 0.000
H5 -0.305 -1.856 0.910
H6 -0.305 -1.856 -0.910
H7 2.223 -0.348 0.000
H8 -0.246 2.290 0.000
H9 -1.494 1.391 -0.876
H10 -1.494 1.391 0.876

Atom - Atom Distances (Å)
  C1 C2 C3 C4 H5 H6 H7 H8 H9 H10
C11.50551.29111.47212.24912.24912.28452.12642.11452.1145
C21.50551.50692.82801.08611.08612.46363.62323.20603.2060
C31.29111.50692.68032.25072.25071.07173.03473.31553.3155
C41.47212.82802.68033.40763.40763.52321.08741.08981.0898
H52.24911.08612.25073.40761.82013.08164.24533.89213.4583
H62.24911.08612.25073.40761.82013.08164.24533.45833.8921
H72.28452.46361.07173.52323.08163.08163.61314.19624.1962
H82.12643.62323.03471.08744.24534.24533.61311.76991.7699
H92.11453.20603.31551.08983.89213.45834.19621.76991.7520
H102.11453.20603.31551.08983.45833.89214.19621.76991.7520

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 50.755 H1 C2 C6 119.536
C2 C3 C6 24.818 C2 C3 C10 72.621
C2 C6 C3 35.616 C2 C6 H4 49.640
C2 C6 H5 33.084 C3 C2 C6 119.566
C3 C6 H4 51.763 C3 C6 H5 66.151
C3 C10 H7 9.391 C3 C10 H8 65.240
C3 C10 H9 74.680 H4 C6 H5 74.511
C6 C3 C10 86.505 H7 C10 H8 58.839
H7 C10 H9 77.951 H8 C10 H9 60.334
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B2PLYP=FULLultrafine/cc-pVTZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.083      
2 C -0.260      
3 C -0.226      
4 C -0.285      
5 H 0.097      
6 H 0.097      
7 H 0.145      
8 H 0.116      
9 H 0.117      
10 H 0.117      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -0.151 0.872 0.000 0.885
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -23.796 -0.608 0.009
y -0.608 -25.463 0.003
z 0.009 0.003 -25.818
Traceless
 xyz
x 1.844 -0.608 0.009
y -0.608 -0.656 0.003
z 0.009 0.003 -1.188
Polar
3z2-r2-2.376
x2-y21.667
xy-0.608
xz0.009
yz0.003


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 7.214 -0.549 -0.002
y -0.549 7.622 -0.001
z -0.002 -0.001 5.035


<r2> (average value of r2) Å2
<r2> 80.083
(<r2>)1/2 8.949