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 C6H6 (Trimethylenecycopropane)

using model chemistry: MP2/LANL2DZ

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes D3H 1A'
Energy calculated at MP2/LANL2DZ
 hartrees
Energy at 0K-230.981994
Energy at 298.15K-230.986276
HF Energy-230.474568
Nuclear repulsion energy185.064182
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 MP2/LANL2DZ
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
4/u)
Dep P Dep U
1 A1' 3135 3019 0.00      
2 A1' 1861 1792 0.00      
3 A1' 1505 1450 0.00      
4 A1' 746 718 0.00      
5 A1" 744 717 0.00      
6 A2' 3245 3126 0.00      
7 A2' 1112 1071 0.00      
8 A2' 509 490 0.00      
9 A2" 816 786 221.39      
10 A2" 204 196 7.98      
11 E' 3248 3128 19.39      
11 E' 3248 3128 19.39      
12 E' 3131 3016 17.20      
12 E' 3131 3016 17.20      
13 E' 1643 1583 2.30      
13 E' 1643 1583 2.30      
14 E' 1470 1416 12.87      
14 E' 1470 1416 12.87      
15 E' 1136 1094 7.74      
15 E' 1136 1094 7.74      
16 E' 767 739 5.71      
16 E' 767 739 5.71      
17 E' 222 214 0.26      
17 E' 222 214 0.26      
18 E" 814 784 0.00      
18 E" 814 784 0.00      
19 E" 742 715 0.00      
19 E" 742 715 0.00      
20 E" 321 310 0.00      
20 E" 321 310 0.00      

Unscaled Zero Point Vibrational Energy (zpe) 20433.9 cm-1
Scaled (by 0.9631) Zero Point Vibrational Energy (zpe) 19679.9 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 MP2/LANL2DZ
ABC
0.13151 0.13151 0.06576

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2/LANL2DZ

Point Group is D3h

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.859 0.000
C2 0.744 -0.429 0.000
C3 -0.744 -0.429 0.000
C4 0.000 2.221 0.000
C5 1.923 -1.110 0.000
C6 -1.923 -1.110 0.000
H7 -0.937 2.786 0.000
H8 0.937 2.786 0.000
H9 2.881 -0.582 0.000
H10 1.945 -2.204 0.000
H11 -1.945 -2.204 0.000
H12 -2.881 -0.582 0.000

Atom - Atom Distances (Å)
  C1 C2 C3 C4 C5 C6 H7 H8 H9 H10 H11 H12
C11.48731.48731.36222.75262.75262.14302.14303.22133.62813.62813.2213
C21.48731.48732.75261.36222.75263.62813.22132.14302.14303.22133.6281
C31.48731.48732.75262.75261.36223.22133.62813.62813.22132.14302.1430
C41.36222.75262.75263.84683.84681.09401.09404.01964.83364.83364.0196
C52.75261.36222.75263.84683.84684.83364.01961.09401.09404.01964.8336
C62.75262.75261.36223.84683.84684.01964.83364.83364.01961.09401.0940
H72.14303.62813.22131.09404.83364.01961.87345.09125.76255.09123.8892
H82.14303.22133.62811.09404.01964.83361.87343.88925.09125.76255.0912
H93.22132.14303.62814.01961.09404.83365.09123.88921.87345.09125.7625
H103.62812.14303.22134.83361.09404.01965.76255.09121.87343.88925.0912
H113.62813.22132.14304.83364.01961.09405.09125.76255.09123.88921.8734
H123.22133.62812.14304.01964.83361.09403.88925.09125.76255.09121.8734

picture of Trimethylenecycopropane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 C3 60.000 C1 C2 C5 150.000
C1 C3 C2 60.000 C1 C3 C6 150.000
C1 C4 H7 121.110 C1 C4 H8 121.110
C2 C1 C3 60.000 C2 C1 C4 150.000
C2 C3 C6 150.000 C2 C5 H9 121.110
C2 C5 H10 121.110 C3 C1 C4 150.000
C3 C2 C5 150.000 C3 C6 H11 121.110
C3 C6 H12 121.110 H7 C4 H8 117.780
H9 C5 H10 117.780 H11 C6 H12 117.780
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability