Divalent metal 1,3-phenylenediacetate coordination polymers with rigid or flexible dipyridyl tethers: Chains, layers, and interpenetrated networks |
| |
| Authors: | Karyn M Blake Maxwell A Braverman Laura K Sposato |
| |
| Institution: | a Lyman Briggs College and Department of Chemistry, Michigan State University, East Lansing, MI 48825, USA
b Department of Chemistry and Physics, King’s College, Wilkes-Barre, PA 18711, USA |
| |
| Abstract: | Hydrothermal synthesis has afforded four divalent metal 1,3-phenylenediacetate (1,3-phda) coordination polymers containing different dipyridyl-type ligands. {Cu(1,3-phda)(dpa)(H2O)]·H2O}n (1, dpa = 4,4′-dipyridylamine) exhibits a simple 2-D (4,4) rhomboid grid structure. {Co(1,3-phda)(bpy)]·1.5H2O}n (2, bpy = 4,4′-bipyridine) also possesses a (4,4) layer structure, but with syn-syn bridged {Co2(OCO)2} dimeric kernels serving as 4-connected nodes. {Co(H2O)4(3-bpmpH2)](1,3-phda)2·8H2O}n (3, 3-bpmp = bis(3-pyridylmethyl)piperazine) manifests cationic 1-D Co(H2O)4(3-bpmpH2)]n4n+ chains linked into higher dimensionality by unligated 1,3-phda anions and curled tetrameric water molecule units. {Ni(1,3-phda)(4-bpmp)(H2O)2]·2H2O}n (4, 4-bpmp = bis(4-pyridylmethyl)piperazine) has an underlying twofold interpenetrated 658 (cds) 3-D network topology. Variable temperature magnetic susceptibility studies revealed the presence of weak antiferromagnetic coupling and zero-field splitting (J = −1.65(4) cm−1 and D = 30.9(7) cm−1 with g = 2.20(1)) within the {Co2(OCO)2} dimers in 2. |
| |
| Keywords: | Cobalt Nickel Copper X-ray crystal structures Coordination polymer Antiferromagnetism |
| 本文献已被 ScienceDirect 等数据库收录！ |
|
