Abstract
The preparation of sodium dihydrobis(1,2,3-benzotriazolyl)borate was realised by refluxing one mole of sodium borohydride with two moles of 1,2,3-benzotriazole in toluene over a period of 12 h. Its complexes with MCl2?py2 [where M= Mn(II), Fe(II), Co(II), Ni(II), Cu(II) and py = Pyridine] were characterized by elemental analysis as well as magnetic, spectroscopic and conductivity measurements. On the basis of these studies, it is proposed that the geometry of all the complexes is octahedral. The ligand field parameters 10 Dq, B and ? show extensive overlap between the M-L orbital. The molar conductance of 10-3Msolutions of the complexes in DMSO suggest them to be non-ionic in nature.
Refluktovanjem jednog mola natrijum-borhidrida sa dva mola 1,2,3-benzotriazola u toluenu u toku 12 casova dobijen je i okarakterisan natrijum-dihidrobis(1,2,3-benzotriazolil) borat. Njegovi kompleksi sa MCl 2?py2 [gde je M = Mn(II), Fe(II), Co(II), Ni(II), Cu(II) i py = piridin] su okarakterisani elementalnom analizom, magnetnim, spektroskopskim i merenjima provodljivosti. Na osnovu tog proucavanja pretpostavljena je oktaedarska geometrija za sve komplekse. Parametri ligandnog polja 10Dq, B i ? pokazuju znacajno preklapanje izmedju M-L orbitala. Molarna provodljivost 10-3 M rastvora kompleksa u DMSO ukazuje na njihovu nejonsku prirodu.