Additions and corrections

A series of transition metal chloro complexes with the tetradentate tripodal tris(2-amino-oxazoline) ligand TAO have been synthesized and characterized. X-ray structural analyses of these compounds demonstrate the formation of the mononuclear complexes [MII(TAO)(Cl)]+, where MII = Cr, Mn, Fe, Co, Ni, Cu and Zn. These complexes exhibit distorted trigonal-bipyramidal geometry, coordinating the metal through an apical tertiary amine, three equatorial imino nitrogen atoms, and an axial chloride anion. All the complexes possess an intramolecular hydrogen-bonding (H-bonding) network within the cavity occupied by the metal-bound chloride ion. The metal-chloride bond distances are atypically long, which is attributed to the effects of the H-bonding network. Nuclear magnetic resonance (NMR) spectroscopy of the Zn complex suggests that the solid-state structures are representative of that observed in solution, and that the H-bonding interactions persist as well. Additionally, density functional theory (DFT) calculations were carried out to probe the electronic structures of the complexes.

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“…Mareque-Rivas observed similar trends in Zn II –Cl complexes containing pyridyl tripodal ligands (Figure 3 C/D). 5j,30 …”

Section: Resultsmentioning

confidence: 99%

Synthesis, structure, and physical properties for a series of trigonal bipyramidal MII–Cl complexes with intramolecular hydrogen bonds

Sickerman

Park

et al. 2012

Dalton Trans.

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“…[14] This situation closely resembles the molecular structure of the mononuclear zinc benzoate complex of tmpa. [15] The remaining O(4) atom of the acetate in 7a is involved in hydrogen bonding to a water molecule included in the crystal lattice (the water is further hydrogen bonded to a DMF solvent molecule; see Figure S1 in the Supporting Information). In contrast, the acetate ligand in 7b adopts a semi-bidentate binding mode with one short and one significantly longer Zn-O bond [d{Zn (1) Apparently, the six-membered chelate rings leave more space for anion coordination and allow for greater flexibility of the zinc coordination sphere.…”

Section: Synthesis and Structural Characterization Of Complexesmentioning

confidence: 99%

Heterobimetallic Systems Containing Organometallic and Classical Coordination Sites: Effects of Subtle Changes in the Werner‐Type Site

et al. 2005

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Several highly unsymmetrical heterodinuclear Mn/Zn complexes are reported, in which an organometallic CpMn-(CO) 2 fragment and a classical Werner-type zinc coordination unit are arranged in close proximity by means of a bridging pyrazolate. Ligand scaffolds differing in the chelate size of the tripodal tetradentate {N 4 } binding site, and different coligands for zinc are employed. Both the zinc-devoid precursor compounds and the bimetallic complexes with zinc(II) nested in the tris(pyridylalkyl)amine type {N 4 } compartment

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“…For purpose of contrast, it is interesting to consider the distinguishing features that exist between zinc complexes with local pseudo-trigonal bipyramidal geometries. For instance the cation [Zn(TMPA)(OBz)] + , [30] where TMPA is tris[(2-pyridyl)-methyl]amine and OBz is a benzoate ligand, is functionally comparable to 9. The TMPA-based complex exhibits a slightly elongated Zn II to axial N amine bond length (2.26 Å) along with shorter Zn-N pyridine distances, when compared to 9.…”

Section: Molecular Structures and Coordination Modesmentioning

confidence: 99%

On the Effect of Coordination and Protonation Preferences in the Amphiphilic Behavior of Metallosurfactants with Asymmetric Headgroups

et al. 2009

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(9) were synthesized to model the stoichiometric, coordination, and protonation chemistry in the waxy metallosurfactants 1-4. Detailed data analysis and comparison between 1-4 and 5-9 involved mass spectrometric and spectroscopic methods along with crystallographic determination of 5 (P2 1 /c), 6 (P1), 7 (P2 1 /c), 8Ј (the analogue of 8 with tetraphenylborate counterions, P2 1 /c), and 9 (P1). DFT calculations were used to identify the frontier orbitals, polarizability, and dipole moments. Species 1-4 had their

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Additions and corrections

Cited by 35 publications

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Synthesis, structure, and physical properties for a series of trigonal bipyramidal MII–Cl complexes with intramolecular hydrogen bonds

Synthesis, structure, and physical properties for a series of trigonal bipyramidal MII–Cl complexes with intramolecular hydrogen bonds

Heterobimetallic Systems Containing Organometallic and Classical Coordination Sites: Effects of Subtle Changes in the Werner‐Type Site

On the Effect of Coordination and Protonation Preferences in the Amphiphilic Behavior of Metallosurfactants with Asymmetric Headgroups

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