Nickel adamantanedicarboxylate and adamantanediacetate 2D and 3D coordination polymers with hydrogen-bonding capable dipyridyl ligands

作者：Travis Jamelah Z; Pumford Sean R; Martinez Brianna L; LaDuca Robert L

来源：Polyhedron, 2018, 142: 25-37.

DOI：10.1016/j.poly.2017.12.008

• Nickel
• Crystal structure
• Coordination polymer
• Antiferromagnetism
• Self-penetration

Hydrothermal reaction of nickel nitrate, an adamantane-based dicarboxylic acid, and a hydrogen-bonding capable dipyridyl ligand generated six coordination polymers that were isolated and subsequently structurally characterized by single-crystal X-ray diffraction. {[Ni(adc)(ebin)(H2O)]center dot 2H(2)O}(n) (1, adc = 1,3-adamantanedicarboxylate, ebin = N,N'-ethylenediaminebis(isonicotinamide)) shows ABAB stacked (4,4) coordination polymer grids. In contrast, [Ni(ada)(ebin)](n) (2, ada = 1,3-adamantanediacetate) manifests a very rare self-penetrated layer with a 3,5-connected (4(2)6)(4(2)6(7)8) topology. {[Ni(adc)(pbin)]center dot 2H(2)O}(n) (3, pbin = N,N'-propyleneenediaminebis(isonicotinamide)) shows a dimer-based 4(12)6(3) pcu network, while {[Ni-5(ada)(5)(pbin)(5)(H2O)(5)]center dot 8H(2)O}(n) (4) manifests looped layers with (4)(4.8(5)) topology. {[Ni-2(adc)(adcH)(2)(dpa)(2)]center dot H2O}(n) (5, dpa =4,4'-dipyridylamine) possesses [Ni-2(adc)(adcH)(2)] linear fragments connected into an uncommon 3-connected 10(3) srs network. Concomitantly formed along with 5, ([Ni(adc)(dpa)]center dot 6.5H(2)O}(n) (6) is a stacked (4,4) grid phase but with a direct AAA stacking pattern. Embedded {Ni-2(OCO)(2)} dimeric units in 2 and 3 exhibit antiferromagnetic coupling J = -10.5(1) cm(-1) (2), J = -2.38(7) cm(-1) (3)). Thermal decomposition behavior of 1-6 was also investigated.

• 出版日期2018-3-1