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 CH3BH2 (methylborane)

using model chemistry: MP2/aug-cc-pVDZ

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at MP2/aug-cc-pVDZ
 hartrees
Energy at 0K-65.691604
Energy at 298.15K-65.695542
HF Energy-65.447757
Nuclear repulsion energy31.568421
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/aug-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' 3129 3001 12.73      
2 A' 3015 2891 2.88      
3 A' 2601 2494 114.24      
4 A' 1468 1408 1.92      
5 A' 1319 1265 76.50      
6 A' 1254 1203 15.87      
7 A' 1089 1045 62.92      
8 A' 975 935 11.40      
9 A' 546 524 0.79      
10 A" 3186 3056 14.49      
11 A" 2675 2565 160.64      
12 A" 1421 1363 3.32      
13 A" 1063 1019 18.95      
14 A" 676 649 1.73      
15 A" 166 160 0.90      

Unscaled Zero Point Vibrational Energy (zpe) 12291.0 cm-1
Scaled (by 0.959) Zero Point Vibrational Energy (zpe) 11787.0 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/aug-cc-pVDZ
ABC
3.15508 0.70755 0.64610

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2/aug-cc-pVDZ

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -0.019 -0.689 0.000
B2 -0.019 0.880 0.000
H3 1.062 -0.953 0.000
H4 -0.442 -1.153 0.903
H5 -0.442 -1.153 -0.903
H6 0.015 1.497 -1.036
H7 0.015 1.497 1.036

Atom - Atom Distances (Å)
  C1 B2 H3 H4 H5 H6 H7
C11.56891.11291.09981.09982.41942.4194
B21.56892.12792.26432.26431.20621.2062
H31.11292.12791.76601.76602.85882.8588
H41.09982.26431.76601.80533.31512.6927
H51.09982.26431.76601.80532.69273.3151
H62.41941.20622.85883.31512.69272.0714
H72.41941.20622.85882.69273.31512.0714

picture of methylborane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 B2 H6 120.783 C1 B2 H7 120.783
B2 C1 H3 103.712 B2 C1 H4 114.957
B2 C1 H5 114.957 H3 C1 H4 105.907
H3 C1 H5 105.907 H4 C1 H5 110.328
H6 B2 H7 118.334
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability