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: B97D3/TZVP

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C1 1A
Energy calculated at B97D3/TZVP
 hartrees
Energy at 0K-155.894243
Energy at 298.15K 
HF Energy-155.894243
Nuclear repulsion energy108.159907
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 B97D3/TZVP
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' 3215 3169 0.74 130.08 0.31 0.47
2 A' 3052 3008 23.25 97.64 0.70 0.83
3 A' 2968 2925 25.34 297.97 0.01 0.02
4 A' 2963 2920 106.06 117.49 0.28 0.44
5 A' 1827 1801 15.11 71.36 0.15 0.26
6 A' 1501 1479 7.96 14.84 0.34 0.51
7 A' 1456 1435 10.18 16.11 0.60 0.75
8 A' 1378 1358 0.32 13.15 0.55 0.71
9 A' 1168 1152 1.60 6.41 0.42 0.59
10 A' 1059 1043 3.66 4.03 0.16 0.28
11 A' 1042 1027 38.89 0.36 0.41 0.58
12 A' 961 947 4.33 10.35 0.42 0.59
13 A' 918 905 14.85 5.82 0.49 0.66
14 A' 671 661 0.77 14.54 0.60 0.75
15 A' 315 310 1.96 1.76 0.75 0.86
16 A" 3020 2977 4.31 96.95 0.75 0.86
17 A" 3017 2974 78.85 118.64 0.75 0.86
18 A" 1451 1430 8.64 11.40 0.75 0.86
19 A" 1105 1089 1.19 0.93 0.75 0.86
20 A" 1029 1014 0.19 2.63 0.75 0.86
21 A" 969 956 2.42 6.46 0.75 0.86
22 A" 700 690 30.34 0.75 0.75 0.86
23 A" 284 280 13.05 0.53 0.75 0.86
24 A" 160 158 0.53 0.40 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 18114.1 cm-1
Scaled (by 0.9856) Zero Point Vibrational Energy (zpe) 17853.3 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 B97D3/TZVP
ABC
0.68881 0.21215 0.17304

See section I.F.4 to change rotational constant units
Geometric Data calculated at B97D3/TZVP

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.180 0.000
C2 -0.030 -1.327 0.000
C3 1.159 -0.401 0.000
C4 -0.854 1.382 0.000
H5 -0.304 -1.864 0.916
H6 -0.304 -1.864 -0.916
H7 2.238 -0.343 0.000
H8 -0.259 2.301 0.000
H9 -1.510 1.386 -0.881
H10 -1.510 1.386 0.881

Atom - Atom Distances (Å)
  C1 C2 C3 C4 H5 H6 H7 H8 H9 H10
C11.50691.29691.47472.26002.26002.29872.13742.12412.1241
C21.50691.50742.83111.09641.09642.47273.63553.21333.2133
C31.29691.50742.68972.26272.26271.08043.05233.33133.3313
C41.47472.83112.68973.41693.41693.54131.09571.09851.0985
H52.26001.09642.26273.41691.83193.10074.26503.90453.4664
H62.26001.09642.26273.41691.83193.10074.26503.46643.9045
H72.29872.47271.08043.54133.10073.10073.63744.22114.2211
H82.13743.63553.05231.09574.26504.26503.63741.78341.7834
H92.12413.21333.33131.09853.90453.46644.22111.78341.7626
H102.12413.21333.33131.09853.46643.90454.22111.78341.7626

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 50.967 H1 C2 C6 119.647
C2 C3 C6 24.854 C2 C3 C10 72.353
C2 C6 C3 35.301 C2 C6 H4 49.540
C2 C6 H5 33.343 C3 C2 C6 119.845
C3 C6 H4 51.809 C3 C6 H5 66.120
C3 C10 H7 9.373 C3 C10 H8 65.319
C3 C10 H9 74.660 H4 C6 H5 74.451
C6 C3 C10 86.304 H7 C10 H8 58.942
H7 C10 H9 77.949 H8 C10 H9 60.386
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B97D3/TZVP Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.067      
2 C -0.247      
3 C -0.168      
4 C -0.337      
5 H 0.100      
6 H 0.100      
7 H 0.109      
8 H 0.123      
9 H 0.126      
10 H 0.126      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -0.205 0.906 0.000 0.929
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -23.723 -0.615 0.000
y -0.615 -25.372 0.000
z 0.000 0.000 -25.719
Traceless
 xyz
x 1.822 -0.615 0.000
y -0.615 -0.650 0.000
z 0.000 0.000 -1.172
Polar
3z2-r2-2.344
x2-y21.648
xy-0.615
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 7.545 -0.564 0.000
y -0.564 7.960 0.000
z 0.000 0.000 5.249


<r2> (average value of r2) Å2
<r2> 80.463
(<r2>)1/2 8.970