Schiff Base Porphyrin and Expanded Porphyrin Analogues

ChemInform ◽  
2005 ◽  
Vol 36 (10) ◽  
Author(s):  
Wyeth B. Callaway ◽  
Jacqueline M. Veauthier ◽  
Jonathan L. Sessler
Keyword(s):  
Schiff Base ◽  
Porphyrin Analogues ◽  
Expanded Porphyrin

Molecular “Texas Longhorn”: An expanded Schiff base oligopyrrolic macrocycle

2021 ◽  
pp. A-G
Author(s):  
Chenxing Guo ◽  
Vincent M. Lynch ◽  
Jonathan L. Sessler
Keyword(s):  
Schiff Base ◽  
Solid State ◽  
Structural Characterization ◽  
Building Blocks ◽  
State Structure ◽  
Architectural Form ◽  
Molecular Building Blocks ◽  
Texas Longhorn ◽  
Porphyrin Analogues

We report here the synthesis and structural characterization of a novel expanded Schiff base oligopyrrolic macrocycle TxLH (i.e. compound 2) along with its smaller congener hemi-TxLH (i.e. compound 1). The solid-state structure of TxLH is reminiscent of the shape of a Texas Longhorn[Formula: see text]. It thus defines a new architectural form for porphyrin analogues. The present study thus underscores the potential of using functionalized oligopyrroles as readily accessible molecular building blocks for the construction of structurally non-trivial molecules.

Syntheses and structural studies of η5-pentamethylcyclopentadienyl rhodium(III) and iridium(III) complexes of a Schiff-base expanded porphyrin

2010 ◽  
Vol 14 (01) ◽  
pp. 41-46 ◽  
Author(s):  
Luciano Cuesta ◽  
Vincent M. Lynch ◽  
Jonathan L. Sessler
Keyword(s):  
Schiff Base ◽  
Intramolecular Hydrogen Bonding ◽  
X Ray Diffraction ◽  
Nmr Studies ◽  
Coordination Environment ◽  
Metal Centers ◽  
X Ray ◽  
Hydrogen Bonding Interactions ◽  
Intramolecular Hydrogen ◽  
Expanded Porphyrin

Reported here is the synthesis of new binuclear rhodium(III) and iridium(III) semi-sandwich complexes of a Schiff-base expanded porphyrin. Single crystals of these new complexes were subject to X-ray diffraction analysis. The resulting structures revealed that the Schiff-base macrocycle adopts a V-shape in which two {(η5- C 5 Me 5) MCl } ( M = Rh and Ir ) fragments are accommodated within the macrocyclic pocket. The coordination environment of the metal centers is typical to that of "piano stool"-type complexes. The X-ray analyses and complementary NMR studies (carried out in CD 2 Cl 2) provide evidence for the existence of strong intramolecular hydrogen-bonding interactions between the pyrrolic NH protons and the chloride counteranion both in solution and in the solid state.

Synthesis of pseudoaromatic expanded porphyrin analogues

1999 ◽  
Vol 40 (10) ◽  
pp. 1921-1924 ◽  
Author(s):  
Chang-Hee Lee ◽  
Kyung-Tack Oh
Keyword(s):  
Porphyrin Analogues ◽  
Expanded Porphyrin

Binuclear organometallic ruthenium complexes of a Schiff base expanded porphyrin

2008 ◽  
pp. 3744 ◽  
Author(s):  
Luciano Cuesta ◽  
Elisa Tomat ◽  
Vincent M. Lynch ◽  
Jonathan L. Sessler
Keyword(s):  
Schiff Base ◽  
Ruthenium Complexes ◽  
Expanded Porphyrin

Binuclear Fluoro-Bridged Zinc and Cadmium Complexes of a Schiff Base Expanded Porphyrin:  Fluoride Abstraction from the Tetrafluoroborate Anion

2007 ◽  
Vol 46 (16) ◽  
pp. 6224-6226 ◽  
Author(s):  
Elisa Tomat ◽  
Luciano Cuesta ◽  
Vincent M. Lynch ◽  
Jonathan L. Sessler
Keyword(s):  
Schiff Base ◽  
Cadmium Complexes ◽  
Expanded Porphyrin

A Schiff Base Expanded Porphyrin Macrocycle that Acts as a Versatile Binucleating Ligand for Late First-Row Transition Metals

2005 ◽  
Vol 44 (7) ◽  
pp. 2125-2127 ◽  
Author(s):  
Jonathan L. Sessler ◽  
Elisa Tomat ◽  
Tarak D. Mody ◽  
Vincent M. Lynch ◽  
Jacqueline M. Veauthier ◽  
...  
Keyword(s):  
Schiff Base ◽  
Transition Metals ◽  
Porphyrin Macrocycle ◽  
Expanded Porphyrin

Homocarbaporphyrinoids: The m‐o‐m and p‐o‐p Terphenyl Embedded Expanded Porphyrin Analogues and Their Rh I Complexes

2019 ◽  
Vol 25 (18) ◽  
pp. 4683-4687 ◽  
Author(s):  
B. Adinarayana ◽  
Mainak Das ◽  
Cherumuttathu H. Suresh ◽  
A. Srinivasan
Keyword(s):  
Porphyrin Analogues ◽  
Expanded Porphyrin

Spin-crossover in an iron(iii) complex showing a broad thermal hysteresis

2021 ◽  
Author(s):  
Cyril Rajnák ◽  
Romana Mičová ◽  
Ján Moncoľ ◽  
Ľubor Dlháň ◽  
Christoph Krüger ◽  
...  
Keyword(s):  
Schiff Base ◽  
Schiff Base Ligand ◽  
Spin Crossover ◽  
Thermal Hysteresis ◽  
Mononuclear Complex ◽  
Hysteresis Width ◽  
Thermally Induced

A pentadentate Schiff-base ligand 3,5Cl-L2− and NCSe− form a iron(iii) mononuclear complex [Fe(3,5Cl-L)(NCSe)], which shows a thermally induced spin crossover with a broad hysteresis width of 24 K between 123 K (warming) and 99 K (cooling).

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