Effects of Anion and Bipyridyl Bridging Ligand Identity on the Co(II) Coordination Networks

被引：19

作者：

Croitor, Lilia ^{[1
]}

Coropceanu, Eduard B. ^{[2
,3
]}

Chisca, Diana ^{[2
]}

Baca, Svetlana G. ^{[1
]}

van Leusen, Jan ^{[4
]}

Koegerler, Paul ^{[4
]}

Bourosh, Polina ^{[1
]}

Kravtsov, Victor Ch ^{[1
]}

Grabco, Daria ^{[1
]}

Pyrtsac, Constantin ^{[1
]}

Fonari, Marina S. ^{[1
]}

机构：

[1] Moldavian Acad Sci, Inst Appl Phys, MD-2028 Kishinev, Moldova

[2] Moldavian Acad Sci, Inst Chem, MD-2028 Kishinev, Moldova

[3] Tiraspol State Univ, MD-2069 Kishinev, Moldova

[4] Rhein Westfal TH Aachen, Inst Inorgan Chem, D-52074 Aachen, Germany

来源：

CRYSTAL GROWTH & DESIGN | 2014年 / 14卷 / 06期

关键词：

METAL-ORGANIC FRAMEWORKS; CRYSTAL-STRUCTURES; MAGNETIC-PROPERTIES; CO-II; POLYMERS; COBALT(II); ACID; COMPLEXES; BEHAVIOR; DESIGN;

D O I：

10.1021/cg500646r

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Five new coordination polymers, {[Co(OAc)(2)(bpe)(H2O)]center dot 0.5(dmf)}(n) (1), {[Co(bpy)(2)(H2O)(4)][Co(tfa)(bpy)(2)(H2O)(3)](tfa)(3)center dot 1.5(bpy)}(n) (2), [Co(tfa)(2)(dps)(4)](n) (3), {[Co(tfa)(2)(bpe)(4)]center dot H2O}(n) (4), and [Co(tfa)(2)(bpp)(4)] (5) (where AcO- = CH3CO2-; tfa(-) = CF3CO2-; bpy = 4,4'-bipyridine; bpe = 1,2-bis(4-pyridyl)ethane; bpp = 1,3-bis(4-pyridyl)propane; dps = 4,4'-dipyridyl sulfide; dmf = N,N'-dimethylformamide) were synthesized by the reactions of Co(OAc)(2)center dot 4H(2)O and Co(tfa)(2)center dot 4H(2)O with different dipyridyl ligands and characterized by elemental analysis, IR spectra, and X-ray single-crystal diffraction. Compound 1 exhibits extended two-dimensional (2D) networks through the bridging AcO- and bpe ligands. The polymeric motifs in 2-5 are exclusively based on bipyridine-type ligands and results in ID cationic chains in 2, similar charge-neutral double tapes in 3 and 4, and a 2D polymeric network in S. In 2-5, the tfa anions coordinate to the Co(II) center in a monodentate mode. An impact of the anion's fluorination on coordination modes and supramolecular architectures is registered. Magnetic measurements reveal almost vanishing exchange interactions in the layered materials 1 and 5. The correlation of mechanical properties and crystal structure has been demonstrated for 1.

引用

页码：3015 / 3025

页数：11

共 65 条

[1] Coordination polymers constructed from o-phthalic acid and diamines:: Syntheses and crystal structures of the phthalate-imidazole complexes {[Cu(Pht)(Im)2]• 1.5H2O}n and [Co(Pht)(Im)2]n and their application in oxidation catalysis [J].