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All results from a given calculation for CH3BH2 (methylborane)

using model chemistry: MP4/6-31G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at MP4/6-31G*
 hartrees
Energy at 0K-65.681513
Energy at 298.15K-65.685441
HF Energy-65.441171
Nuclear repulsion energy31.656220
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 MP4/6-31G*
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' 3109 2968        
2 A' 3009 2873        
3 A' 2621 2503        
4 A' 1527 1458        
5 A' 1387 1324        
6 A' 1284 1226        
7 A' 1115 1065        
8 A' 985 940        
9 A' 594 567        
10 A" 3157 3014        
11 A" 2696 2574        
12 A" 1495 1427        
13 A" 1095 1046        
14 A" 702 670        
15 A" 135 129        

Unscaled Zero Point Vibrational Energy (zpe) 12455.5 cm-1
Scaled (by 0.9548) Zero Point Vibrational Energy (zpe) 11892.5 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 MP4/6-31G*
ABC
3.18210 0.70979 0.64922

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP4/6-31G*

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -0.016 -0.688 0.000
B2 -0.016 0.878 0.000
H3 1.053 -0.977 0.000
H4 -0.456 -1.139 0.898
H5 -0.456 -1.139 -0.898
H6 0.016 1.497 -1.029
H7 0.016 1.497 1.029

Atom - Atom Distances (Å)
  C1 B2 H3 H4 H5 H6 H7
C11.56581.10731.09661.09662.41512.4151
B21.56582.14092.25082.25081.20101.2010
H31.10732.14091.76291.76292.87312.8731
H41.09662.25081.76291.79523.29852.6808
H51.09662.25081.76291.79522.68083.2985
H62.41511.20102.87313.29852.68082.0573
H72.41511.20102.87312.68083.29852.0573

picture of methylborane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 B2 H6 121.031 C1 B2 H7 121.031
B2 C1 H3 105.145 B2 C1 H4 114.277
B2 C1 H5 114.277 H3 C1 H4 106.246
H3 C1 H5 106.246 H4 C1 H5 109.883
H6 B2 H7 117.847
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability