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A Novel Trinuclear Nickel(II) Phenanthroline Suberato Complex: {Ni[Ni(phen)(H 2 O) 4 ] 2 L 4/2 }L · 4H 2 O (H 2 L = suberic acid)
Author(s) -
Zheng YueQing,
Lin JianLi
Publication year - 2002
Publication title -
zeitschrift für anorganische und allgemeine chemie
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.354
H-Index - 66
eISSN - 1521-3749
pISSN - 0044-2313
DOI - 10.1002/1521-3749(200208)628:8<1724::aid-zaac1724>3.0.co;2-s
Subject(s) - cationic polymerization , triclinic crystal system , crystallography , octahedron , chemistry , denticity , nickel , crystal structure , molecule , stacking , phenanthroline , hydrogen bond , stereochemistry , polymer chemistry , organic chemistry
The Reaction of freshly precipitated NiCO 3 with phenanthroline and suberic acid in CH 3 OH/H 2 O at room temperature gave the title complex consisting of polymeric ∞ 1 {Ni[Ni(phen)(H 2 O) 4 ] 2 L 4/2 } 2+ cationic chains, suberate anions and hydrogen bonded H 2 O molecules. The cationic chains are generated from bis‐monodentate suberato ligands bridging the trinuclear {Ni[Ni(phen)(H 2 O) 4 ] 2 } 6+ groups, in which the central Ni atom is, via two μ ‐H 2 O molecules, coordinated to two monodentate cationic [Ni(phen)(H 2 O) 4 ] 2+ complex ligands at trans positions. The NiO 6 octahedral coordination about the central Ni atom is elongated tetragonally distorted with d(Ni—O) = 2.033—2.166Å and the NiN 2 O 4 octahedra about the side Ni atoms are significantly distorted with d(Ni—N) = 2.089, 2.099Å, d(Ni—O) = 2.046—2.117Å. The polymeric cationic chains are assembled via π—π stacking interactions into open 2D layers, between which the suberate anions and crystal H 2 O molecules are sandwiched. Crystal data: triclinic, P 1¯ (no. 2), a = 11.397(2)Å, b = 11.975(2)Å, c = 12.500(2)Å, α = 107.75(1)°, β = 104.50(1)°, γ = 109.68(1)°, Z = 1, R = 0.0521, w R 2 = 0.1249 for 3892 out of 6198 reflections with F o 2 > 2σ( F o 2 ).