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: TPSSh/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 TPSSh/cc-pVDZ
 hartrees
Energy at 0K-155.970147
Energy at 298.15K 
HF Energy-155.970147
Nuclear repulsion energy107.697071
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 TPSSh/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' 3264 3174 0.34 136.69 0.30 0.46
2 A' 3115 3029 19.80 100.48 0.72 0.84
3 A' 3022 2938 27.09 247.75 0.01 0.02
4 A' 3011 2927 94.19 135.19 0.20 0.34
5 A' 1863 1812 12.79 59.18 0.21 0.35
6 A' 1506 1464 8.65 16.94 0.39 0.56
7 A' 1468 1428 8.84 20.33 0.66 0.80
8 A' 1394 1355 1.23 14.68 0.56 0.72
9 A' 1201 1168 1.04 6.86 0.48 0.65
10 A' 1086 1056 15.24 3.40 0.27 0.42
11 A' 1055 1026 19.72 0.19 0.72 0.83
12 A' 982 955 5.54 8.48 0.43 0.60
13 A' 935 909 12.87 7.71 0.60 0.75
14 A' 686 667 0.74 16.98 0.59 0.74
15 A' 317 308 1.72 1.76 0.74 0.85
16 A" 3084 2999 7.55 101.16 0.75 0.86
17 A" 3074 2990 75.73 122.38 0.75 0.86
18 A" 1465 1425 6.99 14.14 0.75 0.86
19 A" 1104 1074 0.98 2.74 0.75 0.86
20 A" 1036 1007 0.50 4.37 0.75 0.86
21 A" 980 953 2.63 7.37 0.75 0.86
22 A" 726 706 25.73 0.86 0.75 0.86
23 A" 295 287 10.06 1.00 0.75 0.86
24 A" 161 157 0.50 0.35 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 18415.0 cm-1
Scaled (by 0.9724) Zero Point Vibrational Energy (zpe) 17906.7 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 TPSSh/cc-pVDZ
ABC
0.68440 0.21022 0.17159

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.181 0.000
C2 -0.053 -1.332 0.000
C3 1.156 -0.425 0.000
C4 -0.832 1.403 0.000
H5 -0.337 -1.868 0.921
H6 -0.337 -1.868 -0.921
H7 2.241 -0.382 0.000
H8 -0.214 2.314 0.000
H9 -1.490 1.420 -0.886
H10 -1.490 1.420 0.886

Atom - Atom Distances (Å)
  C1 C2 C3 C4 H5 H6 H7 H8 H9 H10
C11.51381.30491.47872.27142.27142.31092.14432.13092.1309
C21.51381.51122.84411.10271.10272.48303.65003.22893.2289
C31.30491.51122.70072.27112.27111.08643.06283.34503.3450
C41.47872.84412.70073.43443.43443.55431.10061.10341.1034
H52.27141.10272.27113.43441.84183.11474.28433.92543.4851
H62.27141.10272.27113.43441.84183.11474.28433.48513.9254
H72.31092.48301.08643.55433.11473.11473.64714.23744.2374
H82.14433.65003.06281.10064.28434.28433.64711.79171.7917
H92.13093.22893.34501.10343.92543.48514.23741.79171.7714
H102.13093.22893.34501.10343.48513.92544.23741.79171.7714

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 51.110 H1 C2 C6 119.657
C2 C3 C6 24.908 C2 C3 C10 72.458
C2 C6 C3 35.252 C2 C6 H4 49.469
C2 C6 H5 33.367 C3 C2 C6 119.840
C3 C6 H4 51.741 C3 C6 H5 66.078
C3 C10 H7 9.440 C3 C10 H8 65.249
C3 C10 H9 74.646 H4 C6 H5 74.446
C6 C3 C10 86.459 H7 C10 H8 58.808
H7 C10 H9 77.935 H8 C10 H9 60.374
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at TPSSh/cc-pVDZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.046      
2 C -0.016      
3 C -0.134      
4 C -0.015      
5 H 0.026      
6 H 0.026      
7 H -0.004      
8 H 0.051      
9 H 0.056      
10 H 0.056      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -0.151 0.921 0.000 0.933
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 6.917 -0.604 0.000
y -0.604 7.343 0.000
z 0.000 0.000 4.493


<r2> (average value of r2) Å2
<r2> 80.812
(<r2>)1/2 8.990