Evolution and Study of Polymer-Supported Metal Catalysts for Oxygen Atom Transfer:  Oxidation of Alkanes and Alkenes by Diamide Manganese Complexes [J. Am. Chem. Soc. 1999, 121, 8965−8966].

Abstract

Although we correctly plotted and interpreted the data as first order, the units for the rate constants in Table 1 are labeled as second order rather than first order. The units should be "sec -1 " rather than "mol/L‚sec".

Amide hydrogen bonding: control of the molecular and extended structures of two symmetrical pyridine-2-carboxamide derivatives

“…The basic structural features of these compounds allow them to function as multidentate N,N 0 -donor ligands, or as mixed N,O-donor ligands in situations where the carbonyl O atoms are used for binding. When coordinated as N,N 0 -donor ligands, these deprotonated diamide derivatives are typically capable of stabilizing metal ions in both high and mid-to-low oxidation states (Havranek et al, 1999;Lee et al, 2002). The deprotonated amide N atoms ostensibly function as hard -donors and such ligands exhibit a thermodynamic preference for the coordination of hard metal ions, in accord with the general principles of the HSAB (hard-soft-acid-base) theory (Pearson, 1963).…”

Diaqua[N,N′-(o-phenylene)bis(pyridine-2-carboxamidato)-κ 4 N]manganese(III) perchlorate

“…To date, many iron and chromium coordination complexes containing a large in-plane pyridine carboxamide ligand (Dutta et al, 2000) and [Co III (C 12 (Ni, 2007), have been synthesized and structural characterized. However, the manganese(III) complexes with the bpb 2ligand and its derivatives are relative scarce (Lin et al, 2003;Liang et al, 2007;Havranek et al, 1999). Herein, we report a new Mn(III) complex [Mn III (bpb)(H 2 O) 2 ]ClO 4 , (I).…”

“…For iron and chromium monomeric complexes with the inplane 1,2-bis(pyridine-2-carboxamido)benzene (bpb 2À ) ligand, see: Ni et al (2006); Ni (2007); Che et al (1988); Dutta et al (2000). For manganese monomeric compounds with the bpb 2À ligand and its derivatives, see: Liang et al (2007); Lin et al (2003); Havranek et al (1999). For the synthesis of the H 2 bpb ligand, see: Barnes et al (1978).…”

Highly Regioselective Oxygenation of C−H Bonds: Diamidomanganese Constructs with Attached Substrates as Catalyst Models

“…[10] The 1 H NMR spectra of 5 show more signals than the spectra of comparable catenanes and macrocycles. [5,7,12] The preferred formation of knot 5 over formation of a topologically isomeric catenane or the non-knotted topologically isomeric macrocycle (with 12 CONH groups each) is attributed to hydrogen bonds between amide groups, as in comparable template syntheses of catenanes and rotaxanes. [12,13] Instead of the usual macrocyclic tetralactam host (of type 3) the middle loop of the knot could, however, act as a noncyclic concave template for a CONH guest group.…”

“…We began our search for novel metal catalysts capable of atom transfer, by screening solid-bound metal complexes. [7] Promising metal complexes emerging from the screening process will ultimately be incorporated into metal complex/receptor constructs of general type III. During the initial studies we learned to appreciate the full magnitude of the problem and realized the need for simpler model systems, which would allow the facile evaluation of the characteristics of metal complexes (under conditions mimicking the substrate proximity found in enzymes).…”