return to home page Computational Chemistry Comparison and Benchmark DataBase Release 22 (May 2022) Standard Reference Database 101 National Institute of Standards and Technology
You are here: Calculated > Energy > Optimized > Energy

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

using model chemistry: B2PLYP=FULLultrafine/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 B2PLYP=FULLultrafine/cc-pVDZ
 hartrees
Energy at 0K-155.767220
Energy at 298.15K 
HF Energy-155.582920
Nuclear repulsion energy107.632104
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-pVDZ
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' 3296 3158 0.19 128.52 0.30 0.46
2 A' 3152 3020 15.57 92.22 0.73 0.84
3 A' 3055 2928 39.89 285.97 0.04 0.07
4 A' 3054 2926 58.69 62.56 0.22 0.36
5 A' 1859 1781 11.47 46.37 0.21 0.35
6 A' 1511 1448 6.61 15.33 0.40 0.57
7 A' 1469 1408 8.80 18.98 0.67 0.80
8 A' 1399 1341 0.49 10.49 0.61 0.76
9 A' 1202 1152 1.96 6.57 0.47 0.64
10 A' 1085 1039 9.91 3.33 0.21 0.35
11 A' 1059 1015 26.77 0.23 0.48 0.65
12 A' 985 943 5.13 8.26 0.37 0.54
13 A' 938 899 13.37 7.66 0.58 0.73
14 A' 678 650 0.57 16.52 0.60 0.75
15 A' 319 306 1.58 1.73 0.74 0.85
16 A" 3127 2996 30.46 100.14 0.75 0.86
17 A" 3124 2993 38.15 103.00 0.75 0.86
18 A" 1466 1405 7.83 13.65 0.75 0.86
19 A" 1112 1065 0.73 2.70 0.75 0.86
20 A" 1042 999 0.63 3.79 0.75 0.86
21 A" 985 944 2.52 7.63 0.75 0.86
22 A" 722 692 25.15 0.85 0.75 0.86
23 A" 293 281 9.92 1.07 0.75 0.86
24 A" 161 155 0.47 0.33 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 18545.9 cm-1
Scaled (by 0.9582) Zero Point Vibrational Energy (zpe) 17770.6 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 B2PLYP=FULLultrafine/cc-pVDZ
ABC
0.68216 0.21009 0.17135

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.181 0.000
C2 -0.055 -1.334 0.000
C3 1.158 -0.425 0.000
C4 -0.832 1.404 0.000
H5 -0.337 -1.867 0.920
H6 -0.337 -1.867 -0.920
H7 2.242 -0.382 0.000
H8 -0.214 2.313 0.000
H9 -1.488 1.422 -0.885
H10 -1.488 1.422 0.885

Atom - Atom Distances (Å)
  C1 C2 C3 C4 H5 H6 H7 H8 H9 H10
C11.51551.30651.47962.27022.27022.31202.14302.13072.1307
C21.51551.51612.84601.10031.10032.48703.65023.23003.2300
C31.30651.51612.70272.27212.27211.08543.06203.34613.3461
C41.47962.84602.70273.43413.43413.55601.09941.10171.1017
H52.27021.10032.27213.43411.84053.11534.28203.92503.4853
H62.27021.10032.27213.43411.84053.11534.28203.48533.9250
H72.31202.48701.08543.55603.11533.11533.64664.23764.2376
H82.14303.65023.06201.09944.28204.28203.64661.78901.7890
H92.13073.23003.34611.10173.92503.48534.23761.78901.7700
H102.13073.23003.34611.10173.48533.92504.23761.78901.7700

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 51.059 H1 C2 C6 119.587
C2 C3 C6 24.875 C2 C3 C10 72.435
C2 C6 C3 35.421 C2 C6 H4 49.538
C2 C6 H5 33.241 C3 C2 C6 119.704
C3 C6 H4 51.798 C3 C6 H5 66.107
C3 C10 H7 9.429 C3 C10 H8 65.204
C3 C10 H9 74.663 H4 C6 H5 74.456
C6 C3 C10 86.405 H7 C10 H8 58.773
H7 C10 H9 77.945 H8 C10 H9 60.351
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B2PLYP=FULLultrafine/cc-pVDZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.044      
2 C -0.009      
3 C -0.130      
4 C 0.006      
5 H 0.019      
6 H 0.019      
7 H -0.006      
8 H 0.046      
9 H 0.050      
10 H 0.050      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -0.137 0.895 0.000 0.905
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -23.684 -0.643 0.011
y -0.643 -25.391 0.004
z 0.011 0.004 -25.720
Traceless
 xyz
x 1.872 -0.643 0.011
y -0.643 -0.689 0.004
z 0.011 0.004 -1.182
Polar
3z2-r2-2.365
x2-y21.707
xy-0.643
xz0.011
yz0.004


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 6.798 -0.540 -0.003
y -0.540 7.176 -0.002
z -0.003 -0.002 4.441


<r2> (average value of r2) Å2
<r2> 81.076
(<r2>)1/2 9.004