Syntheses, structures and properties of two new coordination polymers based on d-camphoric acid and 2-phenyl-4,6-diamino-1,3,5-triazine

Utilization of mixed ligands to construct two new coordination polymers: Syntheses, structures and properties

“…The large negative Weiss constant further confirms the antiferromagnetic behavior. Such antiferromagnetic coupling has been observed before for some cobalt-containing coordination polymers [47,52,53,61].…”

“…Thus, the 2D structure can be simplified as a (4, 4)-connected with point symbol of 4 4 .6 2 net (Fig. 2d), whose topology is obviously sqltype [39,[55][56].…”

“…The preliminary work shows the 2,4-diamine-6-phenyl-1,3,5-triazine (phdat) is a potentially versatile amino-containing N-heterocycle ligand which presents a diverse number of potential coordination and bridging modes, along with multiple accessible hydrogen bonding interaction due to the presence of the amino groups [36][37][38][39]. In addition, the aromatic phenyl rings of phdat provide weak π Á Á Á π stacking interactions.…”

“…On the other hand, the multidentate carboxylates are important auxiliary organic ligands and can be applied as effective tectons for building diverse coordination networks with desired structural features owing to their diverse coordination modes and orientations [23,[40][41][42][43][44]. However, among the various fascinating architectures of coordination complexes, only a small number of phdat-based analogs have been isolated [45][46][47], and, to our knowledge, the coordination polymer constructed from 2,4 0 -biphenyldicarboxylic acid/phdatmixed ligands (Scheme 1) has not been reported to date.…”

NiII, MnII, and CoII Coordination Polymers with 1,4-Naphthalenedicarboxylic Acid Exhibiting Metamagnetic and Antiferromagnetic Behaviors

“…For compound 3, the experimental χ m T is 11.5 cm 3 mol −1 K at 300 K (Figure 6b), far higher than the expectation of three isolated Co II , which may be due to a substantial spin−orbital coupling from Co II centers. 36,37 38,39 The optimized θ = −43.68 K and C = 13.13 cm 3 mol −1 K are gained by the Curie−Weiss law for temperatures ranging from 40−300 K, which further reveals presence of antiferromagnetic interactions among neighboring Co II metal centers. The magnetization M(H) of compounds 2 and 3 were also measured as a means to examine magnetic properties at low temperatures (Figure S11b and Figure S12).…”