The role of acid in the formation of hydrogen-bonded networks featuring 4,4′-dicarboxy-2,2′-bipyridine (H₂dcbp): Synthesis, structural and magnetic characterisation of {[Cu(H₂dcbp)Cl₂]·H₂O}₂and [Cu(H₂dcbp)(NO₃)₂(H₂O)]

Abstract

The role of acid in the formation of hydrogen-bonded networks featuring 4,4'-dicarboxy-2,2'-bipyridine (H 2 dcbp): Synthesis, structural and magnetic characterisation of {[Cu(H 2 dcbp)Cl 2 ]?H 2 O} 2 and [Cu(H 2 dcbp)(NO 3 ) 2 (H 2 O)]

2-(2-Thienylmethyleneamino)isoindoline-1,3-dione

“…For general background, see: Belloni et al (2005); Kahwa et al (1986); Parashar et al (1988); Santos et al (2001); Tynan et al (2005). Data collection: SMART (Bruker, 1999); cell refinement: SAINT (Bruker, 1999); data reduction: SAINT; program(s) used to solve structure: SHELXS97 (Sheldrick, 1997); program(s) used to refine structure: SHELXL97 (Sheldrick, 1997); molecular graphics: SHELXTL (Bruker, 1997); software used to prepare material for publication: SHELXTL.…”

“…In order to establish control over the preparation of crystalline solid materials so that their architecture and properties are predictable (Belloni et al, 2005;Tynan et al, 2005;Parashar et al, 1988), the synthesis of new and designed crystal structures has become a major strand of modern chemistry. Metal complexes based on Schiff bases have attracted much attention because they can be utilized as model compounds of the active centres in various proteins and enzymes (Kahwa et al, 1986;Santos et al,2001).…”

4-[(4-Hydroxy-3-methoxybenzylidene)amino]-1,5-dimethyl-2-phenylpyrazolidin-3-one

“…The synthesis of new and designed crystal structures is part of a major strand of modern chemistry. One of the aims of crystal engineering is to establish control over the preparation of crystalline solid materials so that their architecture and properties are predictable (Tynan et al, 2005;Parashar et al, 1988). Here we report the synthesis and molecular structure of the title compound, (I).…”

One-pot syntheses, structures and properties of two novel 1-D copper complexes: [CuII2(Hbpdc)2Cl2]2·2H2O and CuI(H2bpdc)Cl (H2bpdc = 2,2′-bipyridyl-5,5′-dicarboxylic acid)

“…Currently, the most commonly used N-heterocyclic carboxylic ligands mainly include pyridinecarboxylic acids [3-5], terpyridinecarboxylic acids [6], imidazolecarboxylic acids [7,8], triazolecarboxylic acids [9]. Although 2,2′-bipyridyl-4,4′-dicarboxylic acid as a polydentate ligand has been extensively exploited [10][11][12][13][14][15][16][17], investigations on 2,2′-bipyridyl-5,5′-dicarboxylic acid (H 2 bpdc) as a multifunctional ligand remain largely unexplored [18][19][20][21][22][23][24][25]. Obviously, most of reported metal complexes are the noble metal derivatives, which provides us an excellent opportunity for exploring the reaction of the first-row transition-metal/lanthanide cations with H 2 bpdc based on the following considerations: (a) the flexible multifunctional H 2 bpdc with N and O donor atoms can provide the large possibility for constructing novel structures; (b) H 2 bpdc can be deprotonated to generate Hbpdc − and bpdc 2− , allowing various acidity-dependent coordination modes; and (c) first-row transition-metal cations have a strong affinity to both N-and O-donors while lanthanide cations prefer O-donors to N-donors according to the hard-soft acid base rule.…”