Structural studies on Cu(N,N-dialkyldiamine)2X2 complexes: X-ray structure of bis(N-isopropyl-1,2-ethanediamine) copper(II)tetrafluroborate
摘要:
Bis(N-isopropyl-1,2-ethanediamine)Copper(II)Tetrafluoroborate has been investigated by single crystal X-ray diffraction methods. The Cu2+ ion has a tetragonally distorted square pyramidal type geometry; where the four N-atoms of the Ligand molecules are equatorial [Cu-N1 = 2.031(5) Angstrom and 2.004(5) Angstrom] and the fifth apical coordination is from one of the F-atom of the BF4- counter-ion [Cu ... F3 = 2.527(5) Angstrom]. The semi-coordinated nature of the polyanion has been interpreted by IR studies and the structure-thermochromic property is correlated and discussed in terms of hydrogen bonding and anion interaction. (C) 2000 Elsevier Science B.V. All rights reserved.