return to home page Computational Chemistry Comparison and Benchmark DataBase Release 22 (May 2022) Standard Reference Database 101 National Institute of Standards and Technology
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All results from a given calculation for CH3BH2 (methylborane)

using model chemistry: CCSD(T)=FULL/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(T)=FULL/6-31G*
 hartrees
Energy at 0K-65.692631
Energy at 298.15K-65.696557
HF Energy-65.441138
Nuclear repulsion energy31.667994
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(T)=FULL/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' 3098 3007        
2 A' 3001 2913        
3 A' 2610 2533        
4 A' 1525 1480        
5 A' 1387 1346        
6 A' 1282 1244        
7 A' 1112 1079        
8 A' 984 955        
9 A' 593 575        
10 A" 3145 3053        
11 A" 2682 2604        
12 A" 1492 1448        
13 A" 1094 1061        
14 A" 701 681        
15 A" 135 131        

Unscaled Zero Point Vibrational Energy (zpe) 12419.7 cm-1
Scaled (by 0.9707) Zero Point Vibrational Energy (zpe) 12055.8 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(T)=FULL/6-31G*
ABC
3.18052 0.71102 0.65019

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -0.016 -0.687 0.000
B2 -0.016 0.877 0.000
H3 1.053 -0.976 0.000
H4 -0.456 -1.138 0.898
H5 -0.456 -1.138 -0.898
H6 0.016 1.496 -1.029
H7 0.016 1.496 1.029

Atom - Atom Distances (Å)
  C1 B2 H3 H4 H5 H6 H7
C11.56391.10741.09681.09682.41392.4139
B21.56392.13942.24952.24951.20161.2016
H31.10742.13941.76301.76302.87212.8721
H41.09682.24951.76301.79563.29802.6797
H51.09682.24951.76301.79562.67973.2980
H62.41391.20162.87213.29802.67972.0582
H72.41391.20162.87212.67973.29802.0582

picture of methylborane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 B2 H6 121.032 C1 B2 H7 121.032
B2 C1 H3 105.146 B2 C1 H4 114.296
B2 C1 H5 114.296 H3 C1 H4 106.228
H3 C1 H5 106.228 H4 C1 H5 109.876
H6 B2 H7 117.844
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability