Syntheses of [Ni2(dien)2(NCS)4(H2O)] and [Ni(aepn)(NCS)2]n ((dien = bis(2-aminoethyl)amine and aepn = N-(2-aminoethyl)-1,3-propanediamine): single crystal structure analysis and thermal behaviour in the solid state

摘要: Abstract [Ni 2 (dien) (NCS) 4 (H O)] ( 1 ) and [Ni(aepn)(NCS) ] n (where dien = bis(2-aminoethyl)amine aepn N -(2-aminoethyl)-1,3-propanediamine) have been synthesised from solution. Single crystal X-ray structure analyses of reveal that the metal atoms in both complexes display distorted octahedral geometry with triamine coordinating facially meridionally . The dinuclear unit is bridged via a thiocyanate moiety while nickel(II) octahedra form polymeric chain. species on deaquation at ∼ 165°C followed by cooling yields conglomerated mass 1a ). melts 230°C which 2a Both are amorphous; former reverts to humid atmosphere.