Boron

general data NMR parameters help

general data

atomic number: 5 atomic weight: 10,81 oxydation number: 3
electronic configuration:
1s22s2p1
[Picture] [Picture] 1.ionisation energy: 800,6
electron affinity: -31,8 electronegativitiy: 2,04 atomic radius: 1,17
covalent radius: 0,88 ionic radius: 0,2 electric conductivity 10-10
crystal structure: trigonal (rhomboedrisch) melting point: 2300 K boiling point: 4275 K
density: 2,34 specific warmth capability: 1,02


NMR data


Isotope 10 Spin quantum number I 3
natural abundance (%) 19.9 absolute sensitivity 3.9*10-3
Magnetic moment 2.0792055 Magnetogyric ratio 2.8746786
Quadrupole moment (Q/fm2 8.459 Line-width factor (/fm4 14
NMR frequency (7,05 T) 32.246MHz Frequency ratio 10.743658
Reference compound BF3*Et2O Sample Conditions CDCl3
relative receptivity DP 3.95*10-3 relative receptivity DC 23.2



Isotope 11 Spin quantum number I 3/2
natural abundance (%) 80.1 absolute sensitivity 0.13
Magnetic moment 3.4710308 Magnetogyric ratio 8.5847044
Quadrupole moment (Q/fm2 4,059 Line-width factor (/fm4 22
NMR frequency (7,05 T) 96.258MHz Frequency ratio 32.083974
Reference compound BF3*Et2O Sample Conditions CDCl3
relative receptivity DP 0.132 relative receptivity DC 777