Synthesis and molecular structure of a nitridochromium(V) complex stabilized with dianionic organic amide ligand

Bis(1,10-phenanthroline-κ2N,N′)-bis(cyanido-κC)cobalt(III) bis(azido-κ1N)[1,2-bis(pyridine-2-carboxamido)benzene-κ4N]chromate(III) monohydrate

“…For monomeric complexes with the ligand bpb 2À , see Ni et al (2006); Che et al (1988); for [Co III (bpb)(Et)(H 2 O)] see Mak et al (1991); Yang et al (1991); and Dutta et al (2000). For monomeric compounds containing two phen ligands and two cyanide groups, see Jian et al (2004) and Zhan et al (1996).…”

Fluorescence resonance energy transfer from tryptophan to a chromium(III) complex accompanied by non-specific cleavage of albumin: a step forward towards the development of a novel photoprotease

“…The analogous Cr(III) complex, [Cr(salen)(H 2 O) 2 ] þ in the presence of sodium azide gives rise to [Cr(salen)(N 3 )(H 2 O)]. This azido complex of chromium(III) on photoexcitation has been known to give rise to chromium(V)nitrido complex [20]. Hence, it is possible that in the case of [Cr(salprn)(H 2 O) 2 ] þ also photolysis in the presence of azide leads to the formation of chromium(V)azido complex.…”

Pyridyldicarboxamide-based multinuclear complexes: Syntheses, structural characterizations, and magnetic properties

“…To obtain such complexes, multifarious functional ligands have been synthesized and used in the self-assembly process, among which pyridine carboxamide-containing derivatives, as one kind of excellent multidentate ligand, have drawn much attention by the coordination chemists in recent years, not only because of their own potential use in asymmetric catalysis, molecular receptors, dendrimer synthesis etc [6][7][8], but also because that the pyridine carboxamide derivatives can easily be synthesized [5]. As a kind of excellent linker, the presence of several N-and O-coordinated sites in the pyridine carboxamide moieties can make it particularly attractive for the preparation of polynuclear complexes, and these ligands also have the ability to stabilize metal ions in high oxidation states [9][10][11]. Up to now, lots of polynuclear complexes with interesting topologies constructed by pyridine carboxamide-based ligands have been prepared, and their biological, electrochemical, luminescent and magnetic properties have been widely investigated [4][5][6][7][8][9][10][11][12][13][14][15].…”

“…As a kind of excellent linker, the presence of several N-and O-coordinated sites in the pyridine carboxamide moieties can make it particularly attractive for the preparation of polynuclear complexes, and these ligands also have the ability to stabilize metal ions in high oxidation states [9][10][11]. Up to now, lots of polynuclear complexes with interesting topologies constructed by pyridine carboxamide-based ligands have been prepared, and their biological, electrochemical, luminescent and magnetic properties have been widely investigated [4][5][6][7][8][9][10][11][12][13][14][15]. The behaviors of pyridine carboxamide derivatives towards the magnetic relevant d-block polynuclear complexes also have attracted intense study since the magnetic interactions can be exchanged by the direct or indirect metal centers in the polynuclear systems.…”