A Novel Bis Tridentate Bipyridine Carboxamide Ligand and Its Complexation to Copper(II):  Synthesis, Structure, and Magnetism

Wang, Jian; Djukic, Brandon; Cao, Jingyi; Alberola, Antonio; Razavi, F. S.; Pilkington, Melanie

doi:10.1021/ic700469v

Cited by 30 publications

(39 citation statements)

References 38 publications

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“…9 There is also the possibility of the bipyridine group adopting a trans conformation which opens other opportunities for metal ion coordination. 10 However here we report a most remarkable transformation. Reaction of L 1 with an excess of cobalt(II) perchlorate in wet acetonitrile at room temperature led to the isolation of single crystals of the metal complex [Co(L 2 )(OH 2 )CH 3 CN]⋅2ClO 4 4 containing the rearranged tetradentate ligand L 2 .…”

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confidence: 44%

Metal catalyzed rearrangement of a 2,2′-bipyridine Schiff-base ligand to a quaterpyridine-type complex

et al. 2007

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confidence: 44%

Metal catalyzed rearrangement of a 2,2′-bipyridine Schiff-base ligand to a quaterpyridine-type complex

et al. 2007

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“…Interestingly, apart from one example, in many Cu 2 Cl 2 dimers, the bond angles deviate from 90.0°. 35 The nonbonding Cu···Cu distance in 3 is 3.514 Å. The overall molecular structure of 3 has a crystallographic center of inversion which is located between the two central copper(II) ions.…”

Section: Resultsmentioning

confidence: 99%

Cyclometalated Ir(III) Complex as a Metalloligand and a Selective Cu(II) Sensor: Synthesis and Structural Characterization of a Heterometallic Tetranuclear Ir(III)/Cu(II) Complex

et al. 2018

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A cyclometalated Ir(III) complex, [Ir(ppy) 2 (LH)] ( 2 ) [LH 2 = 1,2-bis(pyridine-2-carboxamido)benzene; ppyH = 2-phenylpyridine] was synthesized and structurally characterized. [Ir(ppy) 2 (LH)] contains free donor sites and functions as a metalloligand. Accordingly, it interacts with a Cu(II) salt to afford the heterometallic tetranuclear complex, [{Ir(ppy) 2 (L)} 2 {Cu 2 Cl 2 }] ( 3 ). In the latter, a Cu 2 Cl 2 dimer bridges the two cyclometalated Ir(III) units, resulting in a Ir III –Cu II –Cu II –Ir III motif. 2 also functions as a selective and reversible sensor for Cu 2+ , as revealed by quenching of its emission and subsequent revival of the luminescence signal upon addition of EDTA.

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“…These include chloride, two oxygens of one bidentate carboxylate, two oxygens from two carboxylates which are already bound to Cu (II), two phenolate oxygens and two water molecules. 6,12 Overall, the assembly is a two-dimensional coordination polymer where the Cs-Cl bond remained intact within the network. Comparatively, chloride forms only a single bridge between Cs(I) and Cu(II) at an angle of 91.35°.…”

Section: Coordination Polymer With Csclmentioning

confidence: 99%

Retention of Cs–Cl bond induces coordination polymer formation over trinuclear chiral assembly of copper(ii) complexes of l-leucine derived ligand

Dubey

Ray

2013

CrystEngComm

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The use of caesium is a less trodden path in terms of the synthesis of coordination polymers. The chemical similarity and mild toxic nature of caesium salts does not provide much impetus to work with these compounds compared to their potassium analogues. However, are the potassium and caesium salts really close in terms of coordination polymer formation? The result presented in this manuscript shows that while neither potassium halides or potassium nitrate inhibit the formation of a trinuclear chiral assembly of a copper(II) complex from a mononuclear Cu(II) complex, caesium chloride preferentially forms a coordination polymer while keeping the Cs-Cl bond intact. Under the same conditions, caesium nitrate does not inhibit the assembly formation. Structural characterization of {[CsCl{Cu (HL L-leu ) 2 }(H 2 O)]} n (2) showed it to be a two-dimensional coordination polymer in the ab plane, where pentacoordinated Cu(HL L-leu ) 2 complex units (HL L-leu = reduced Schiff base of L-leucine and the salicylaldehyde condensation product) were interconnected through the formation of Cu-Cl-Cs bonds. Multitudes of intermolecular H-bonds were observed as well. The use of KCl, KBr, KI or CsNO 3 in lieu of CsCl to the [Cu(HL L-leu ) 2 (CH 3 CN)] (1) facilitated the formation of the trinuclear assembly, [M{Cu(HL L-leu ) 2 } 3 ]X, where M = K + or Cs + and X = Cl, Br, I or NO 3 depending on the salt used. The Cu(HL L-leu ) 2 units in these assemblies are hexacoordinated Cu(II) complexes.

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A Novel Bis Tridentate Bipyridine Carboxamide Ligand and Its Complexation to Copper(II): Synthesis, Structure, and Magnetism

Cited by 30 publications

References 38 publications

Metal catalyzed rearrangement of a 2,2′-bipyridine Schiff-base ligand to a quaterpyridine-type complex

Metal catalyzed rearrangement of a 2,2′-bipyridine Schiff-base ligand to a quaterpyridine-type complex

Cyclometalated Ir(III) Complex as a Metalloligand and a Selective Cu(II) Sensor: Synthesis and Structural Characterization of a Heterometallic Tetranuclear Ir(III)/Cu(II) Complex

Retention of Cs–Cl bond induces coordination polymer formation over trinuclear chiral assembly of copper(ii) complexes of l-leucine derived ligand

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