Structural and physical systematization of the nonlinear-optical borate crystals

Structure and the nonlinear optical susceptibility are tabulated for 220 acentric crystals of simple and binary borates, using in optoelectronics. It is shown that in the plane of the metal-oxide bond lengths these crystals are positioned inside of the vertical, horizontal and slope intersected ellipses of "acentricity". The crystals with moderate susceptibility are found into central parts of these ellipses intersection and with low susceptibility into the top, bottom and border of ellipses rosette. The un-monotonous fuzzy dependency of the susceptibility on the oxide bond length is observed.