return to home page Computational Chemistry Comparison and Benchmark DataBase Release 22 (May 2022) Standard Reference Database 101 National Institute of Standards and Technology
You are here: Calculated > Energy > Optimized > Energy

All results from a given calculation for CH3BH2 (methylborane)

using model chemistry: CCSD(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 CCSD(T)/aug-cc-pVTZ
 hartrees
Energy at 0K-65.800655
Energy at 298.15K-65.804601
HF Energy-65.466769
Nuclear repulsion energy31.762339
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)/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' 3076 2983        
2 A' 2973 2884        
3 A' 2578 2500        
4 A' 1488 1443        
5 A' 1332 1292        
6 A' 1260 1222        
7 A' 1091 1058        
8 A' 971 941        
9 A' 557 540        
10 A" 3127 3032        
11 A" 2648 2568        
12 A" 1443 1399        
13 A" 1068 1035        
14 A" 681 660        
15 A" 164 159        

Unscaled Zero Point Vibrational Energy (zpe) 12227.0 cm-1
Scaled (by 0.9699) Zero Point Vibrational Energy (zpe) 11859.0 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)/aug-cc-pVTZ
ABC
3.20320 0.71451 0.65298

See section I.F.4 to change rotational constant units
Geometric Data calculated at CCSD(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
C11.56241.10441.09171.09172.40572.4057
B21.56242.11852.24992.24991.19621.1962
H31.10442.11851.75441.75442.84412.8441
H41.09172.24991.75441.79213.29202.6753
H51.09172.24991.75441.79212.67533.2920
H62.40571.19622.84413.29202.67532.0534
H72.40571.19622.84412.67533.29202.0534

picture of methylborane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 B2 H6 120.826 C1 B2 H7 120.826
B2 C1 H3 103.873 B2 C1 H4 114.770
B2 C1 H5 114.770 H3 C1 H4 106.049
H3 C1 H5 106.049 H4 C1 H5 110.331
H6 B2 H7 118.250
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability