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All results from a given calculation for CH3BH2 (methylborane)

using model chemistry: CCSD/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 CCSD/6-31G*
 hartrees
Energy at 0K-65.677805
Energy at 298.15K-65.681725
HF Energy-65.441222
Nuclear repulsion energy31.663879
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 CCSD/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' 3114 2940 15.15      
2 A' 3021 2853 3.57      
3 A' 2618 2472 95.81      
4 A' 1532 1446 2.78      
5 A' 1396 1318 55.77      
6 A' 1286 1214 30.61      
7 A' 1116 1053 69.34      
8 A' 986 931 10.33      
9 A' 604 570 0.31      
10 A" 3160 2984 19.13      
11 A" 2690 2540 145.86      
12 A" 1500 1417 4.15      
13 A" 1098 1037 20.05      
14 A" 704 665 0.82      
15 A" 125 118 1.33      

Unscaled Zero Point Vibrational Energy (zpe) 12474.2 cm-1
Scaled (by 0.9443) Zero Point Vibrational Energy (zpe) 11779.3 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 CCSD/6-31G*
ABC
3.18611 0.70971 0.64923

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -0.015 -0.688 0.000
B2 -0.015 0.878 0.000
H3 1.051 -0.983 0.000
H4 -0.458 -1.137 0.896
H5 -0.458 -1.137 -0.896
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
C11.56581.10591.09581.09582.41522.4152
B21.56582.14482.24912.24911.20101.2010
H31.10592.14481.76121.76122.87792.8779
H41.09582.24911.76121.79273.29652.6794
H51.09582.24911.76121.79272.67943.2965
H62.41521.20102.87793.29652.67942.0571
H72.41521.20102.87792.67943.29652.0571

picture of methylborane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 B2 H6 121.039 C1 B2 H7 121.039
B2 C1 H3 105.500 B2 C1 H4 114.184
B2 C1 H5 114.184 H3 C1 H4 106.244
H3 C1 H5 106.244 H4 C1 H5 109.760
H6 B2 H7 117.836
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability