Review: synthetically modified carbohydrates as ligands

Hydrogen Bonds as Structural Directive towards Unusual Polynuclear Complexes: Synthesis, Structure, and Magnetic Properties of Copper(II) and Nickel(II) Complexes with a 2‐Aminoglucose Ligand

“…The core is stabilized by hydrogen bonding between the coordinating amino group of the glucose backbone and the benzylidene protected oxygen atom O4 of a neighboring {Cu(L)} fragment as hydrogen-bond acceptor. For complex 2 an [N 4 O 2 ] donor set is observed at the nickel(II) ions with a distorted octahedral geometry. The trinuclear isosceles Ni 3 core is bridged by m 3 -alcoholate O3 oxygen atoms of two glucose ligands.…”

“…CuA C H T U N G T R E N N U N G (ClO 4 ) 2 ·6 H 2 O and Ni-A C H T U N G T R E N N U N G (NO 3 ) 2 ·6 H 2 O affords via self-assembly a tetranuclear m 4 3 (1) and a trinuclear alcoholate bridged nickel(II) complex [Ni 3 (L) 5 (HL)]NO 3 (2), respectively. Both complexes crystallize in the acentric space group P2 1 .…”

“…Only for the past two decades, sugars received a growing interest as ligand components in coordination chemistry because of their stable chiral scaffold, supramolecular arrangement via hydrogen bonding, and polyfunctionality. [3,4] In particular the latter aspect is of interest related to the field of high-nuclearity transition-metal complexes which have been attracting continuous interest due to their relevance for multimetal active sites of metalloproteins [5] as well as their importance in the field of molecular magnetism. [6] Abstract: The reaction of benzyl 2-amino-4,6-O-benzylidene-2-deoxy-a-dglucopyranoside (HL) with the metal salts…”

“…The X-ray crystal structure reveals the rare (m 4 -OH)Cu 4 O 4 core for complex 1 which is m 2 -alcoholate bridged. The copper(II) ions possess a distorted square-pyramidal geometry with an [NO 4 ] donor set. The core is stabilized by hydrogen bonding between the coordinating amino group of the glucose backbone and the benzylidene protected oxygen atom O4 of a neighboring {Cu(L)} fragment as hydrogen-bond acceptor.…”

Coordination Aspects in Modern Inorganic Chemistry

“…Vanadium coordination compounds are well-known in bioinorganic chemistry [5,13,69], whose most important function is nitrogen fixation (vanadium nitrogenase, FeV-protein). A lot of information on the coordination chemistry of biologically important carbohydrates is discussed in reviews [69][70][71]. Capacity of di-and polidentate ligands to react with metal ion through distinct donor centers was named as competitive coordination [72].…”