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All results from a given calculation for CH3BH2 (methylborane)

using model chemistry: QCISD(T)/aug-cc-pVTZ

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-pVTZ
 hartrees
Energy at 0K-65.800787
Energy at 298.15K-65.804733
HF Energy-65.466766
Nuclear repulsion energy31.760912
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-pVTZ
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' 3075 2973        
2 A' 2972 2874        
3 A' 2577 2491        
4 A' 1487 1438        
5 A' 1332 1288        
6 A' 1260 1218        
7 A' 1090 1054        
8 A' 970 938        
9 A' 556 538        
10 A" 3126 3022        
11 A" 2647 2560        
12 A" 1442 1394        
13 A" 1067 1032        
14 A" 681 658        
15 A" 164 159        

Unscaled Zero Point Vibrational Energy (zpe) 12224.0 cm-1
Scaled (by 0.9668) Zero Point Vibrational Energy (zpe) 11818.1 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-pVTZ
ABC
3.20285 0.71446 0.65292

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -0.018 -0.686 0.000
B2 -0.018 0.876 0.000
H3 1.054 -0.951 0.000
H4 -0.442 -1.144 0.896
H5 -0.442 -1.144 -0.896
H6 0.015 1.489 -1.027
H7 0.015 1.489 1.027

Atom - Atom Distances (Å)
  C1 B2 H3 H4 H5 H6 H7
C11.56251.10451.09171.09172.40582.4058
B21.56252.11852.25012.25011.19631.1963
H31.10452.11851.75451.75452.84412.8441
H41.09172.25011.75451.79233.29222.6754
H51.09172.25011.75451.79232.67543.2922
H62.40581.19632.84413.29222.67542.0535
H72.40581.19632.84412.67543.29222.0535

picture of methylborane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 B2 H6 120.825 C1 B2 H7 120.825
B2 C1 H3 103.863 B2 C1 H4 114.775
B2 C1 H5 114.775 H3 C1 H4 106.045
H3 C1 H5 106.045 H4 C1 H5 110.338
H6 B2 H7 118.253
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability