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All results from a given calculation for CH3BH2 (methylborane)

using model chemistry: MP2/STO-3G

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/STO-3G
 hartrees
Energy at 0K-64.753221
Energy at 298.15K-64.757146
HF Energy-64.666599
Nuclear repulsion energy31.626490
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/STO-3G
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' 3510 3060 2.44      
2 A' 3354 2924 2.61      
3 A' 3041 2652 15.81      
4 A' 1734 1512 0.87      
5 A' 1584 1381 22.56      
6 A' 1470 1282 54.45      
7 A' 1227 1070 111.63      
8 A' 1073 935 11.67      
9 A' 742 647 0.99      
10 A" 3562 3105 1.28      
11 A" 3184 2776 18.99      
12 A" 1713 1494 1.50      
13 A" 1229 1071 21.57      
14 A" 794 692 0.86      
15 A" 107 93 1.41      

Unscaled Zero Point Vibrational Energy (zpe) 14161.3 cm-1
Scaled (by 0.8719) Zero Point Vibrational Energy (zpe) 12347.2 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/STO-3G
ABC
3.21155 0.70204 0.64522

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2/STO-3G

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -0.011 -0.692 0.000
B2 -0.011 0.888 0.000
H3 1.050 -1.010 0.000
H4 -0.475 -1.130 0.897
H5 -0.475 -1.130 -0.897
H6 0.012 1.490 -1.011
H7 0.012 1.490 1.011

Atom - Atom Distances (Å)
  C1 B2 H3 H4 H5 H6 H7
C11.57971.10751.10081.10082.40432.4043
B21.57972.17402.25632.25631.17661.1766
H31.10752.17401.77301.77302.88882.8888
H41.10082.25631.77301.79433.27702.6667
H51.10082.25631.77301.79432.66673.2770
H62.40431.17662.88883.27702.66672.0216
H72.40431.17662.88882.66673.27702.0216

picture of methylborane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 B2 H6 120.760 C1 B2 H7 120.760
B2 C1 H3 106.681 B2 C1 H4 113.452
B2 C1 H5 113.452 H3 C1 H4 106.811
H3 C1 H5 106.811 H4 C1 H5 109.175
H6 B2 H7 118.430
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability