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All results from a given calculation for CH3BH2 (methylborane)

using model chemistry: QCISD(T)/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 QCISD(T)/aug-cc-pVDZ
 hartrees
Energy at 0K-65.735728
Energy at 298.15K-65.739644
HF Energy-65.447491
Nuclear repulsion energy31.437965
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 QCISD(T)/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' 3069 3001        
2 A' 2962 2896        
3 A' 2558 2501        
4 A' 1458 1426        
5 A' 1314 1285        
6 A' 1241 1214        
7 A' 1078 1054        
8 A' 960 939        
9 A' 549 536        
10 A" 3121 3052        
11 A" 2627 2569        
12 A" 1414 1382        
13 A" 1054 1031        
14 A" 669 654        
15 A" 159 155        

Unscaled Zero Point Vibrational Energy (zpe) 12116.5 cm-1
Scaled (by 0.9778) Zero Point Vibrational Energy (zpe) 11847.5 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 QCISD(T)/aug-cc-pVDZ
ABC
3.13030 0.70146 0.64073

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -0.018 -0.692 0.000
B2 -0.018 0.884 0.000
H3 1.065 -0.964 0.000
H4 -0.447 -1.155 0.906
H5 -0.447 -1.155 -0.906
H6 0.014 1.504 -1.039
H7 0.014 1.504 1.039

Atom - Atom Distances (Å)
  C1 B2 H3 H4 H5 H6 H7
C11.57551.11721.10441.10442.42942.4294
B21.57552.14212.27212.27211.21081.2108
H31.11722.14211.77361.77362.87692.8769
H41.10442.27211.77361.81163.32682.7021
H51.10442.27211.77361.81162.70213.3268
H62.42941.21082.87693.32682.70212.0789
H72.42941.21082.87692.70213.32682.0789

picture of methylborane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 B2 H6 120.804 C1 B2 H7 120.804
B2 C1 H3 104.108 B2 C1 H4 114.816
B2 C1 H5 114.816 H3 C1 H4 105.950
H3 C1 H5 105.950 H4 C1 H5 110.202
H6 B2 H7 118.302
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability