Hexamethylenetetramine complexes with manganese(II), cobalt(II), nickel(II), copper(II), zinc(II) and cadmium(II) thiocyanates

✍ Scribed by I.S. Ahuja; Raghuvir Singh; C.L. Yadava

• Publisher: Elsevier Science
• Year: 1981
• Tongue: English
• Weight: 747 KB
• Volume: 37
• Category: Article
• ISSN: 1386-1425
• DOI: 10.1016/0584-8539(81)80112-2

✦ Synopsis

ALastract

-Coordmatlon compounds formed by the interaction of hexamethylenetetramme (Hmta), a wtentiallv tetradentate heand, with Mn(I1). Co(I1). TWII). Cu(I1). Zn(I1) and Cd(I1) thmcvanates have been prepared and character& from ih& elem&tal analyses, magnetic sus&ptlbWl&, electronic and I r spectral studies down to 200 cm-' as well as X-ray powder d&action patterns m the solid state The compounds Isolated are Mn(NCS),(Hmta),(EtOH),, Mn(NCS),(Hmta),, Co(NCS),(Hmta),(EtOH),, Co(NCS),(Hmta),, N1(NCS),(Hmta),(EtOH),, Ni(NCS),(Hmta),, Cu(NCS),(Hmta),, Zn(NCS),(Hmta), and Cd(NCS),(Hmta) It IS shown that Hmta. though a potentially tetradentate hgand, acts only as a termmally bonded monodentate hgand or a bldentate hgand bndgmg between two metal atoms retaining the chair configuration of the uncoordinated molecule m all these complexes The tentative stereochemlstnes of the complexes are discussed The hgand field parameters 10 Da, B, 6, A and v,/u, calculated for the cobalt, mckel and copper complexes are consistent with th&r p&posed ster&chemlstnes