Stereochemistry of four-coordinate bis(methinodiphosphinate)metal(II) chelate complexes

Davison, Alan; Reger, Daniel L.

doi:10.1021/ic50103a028

Cited by 148 publications

(130 citation statements)

References 4 publications

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“…[12] These compounds were also reported to exhibit al. [26] Bis(chloromethyl) ether and bis(bromomethyl) thioether were no oxidation processes as seen in the H 2 (dtchp) (7) system. synthesized following Buc [27] and Komoto et al, [28] respectively.…”

Section: Electronic Absorption Spectroscopymentioning

confidence: 94%

Synthesis and Investigation of Chalcogen Atom Substituted Dinitriles and Porphyrazines

Pullen¹,

Faulmann

Cassoux³

1999

Eur. J. Inorg. Chem.

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A series of chalcogen atom substituted porphyrazines have been assembled and characterized. Oxygen and sulfur chalcogen atoms have been substituted for peripheral methylene groups. Heteroatom‐enriched, seven‐membered ring dinitriles (1–3) were synthesized and characterized by IR, MS, UV‐vis, 1H NMR, elemental analysis, and X‐ray analysis to examine the ring conformations. They were template cyclized in the presence of MgII to form the MgII containing porphyrazine macrocycles. The MgII and metal‐free macrocycles (4–9) were synthesized for all peripherally substituted porphyrazines. The unchalcogen‐substituted NiII, CuII, and ZnII containing porphyrazine derivatives (10–12) were also synthesized because of the higher solubility of the metal‐free porphyrazine 7. The macrocycles were characterized and studied using such techniques as UV‐vis, IR, elemental analysis, cyclic voltammetry, and electrical conductivity measurements.

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Section: Electronic Absorption Spectroscopymentioning

confidence: 94%

Synthesis and Investigation of Chalcogen Atom Substituted Dinitriles and Porphyrazines

Pullen¹,

Faulmann

Cassoux³

1999

Eur. J. Inorg. Chem.

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“…Scalar relativistic effects have been considered using the zero-order regular approximation (ZORA). 15,16 The (1s2s2p) 10 frozen core electrons for Fe and S atoms (ADF database TZP), and the (1s) 2 for C, and N atoms (ADF database DZP) were used in all calculations. In all cases, the subsequent steps after the geometry optimization in gas phase, were performed the electric field gradient (EFG) on the Fe atom and the analytical vibration frequency calculations.…”

Section: Methods and Calculations Detailsmentioning

confidence: 99%

Synthesis, characterization, DFT and Td-dfT study of the [Fe(mnt)(L)(t-BuNC) 2] octahedral complex (L = phen, bipy)

MorigakiI¹,

Silva²,

Melo³

et al. 2009

Quím. Nova

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Recebido em 12/9/08; aceito em 8/4/09; publicado na web em 26/8/09FeBr 2 has reacted with an equivalent of mnt 2-(mnt = cis-1,2-dicyanoethylene-1,2-dithiolate) and the α-diimine L (L = 1,10'-phenantroline, 2,2'-bipyridine) in THF solution, and followed by adding of t-butyl-isocyanide to give [Fe(mnt)(L)(t-BuNC) 2 ] neutral compound. The products were characterized by infrared, UV-visible and Mössbauer spectroscopy, besides thermogravimetric and conductivity data. The geometry in the equilibrium was calculated by the density functional theory and the electronic spectrum by the time-dependent. The experimental and theoretical results in good agreement have defined an octahedral geometry with two isocyanide neighbours. The π→π * intraligand electronic transition was not observed for cis-isomers in the near-IR spectral region.

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“…The starting materials, 1-(2 0 -chlorobenzyl)triphenylphosphonium bromide ([oClBzTPP]Br), and disodium maleonitriledithiolate (Na 2 mnt) were synthesized following the literature procedures [17,18]. Elemental analyses were run on a Model 240 Perkin-Elmer C H N instrument.…”

Section: General Materials and Physical Measurementsmentioning

confidence: 99%

Syntheses, crystal structures, and properties of two salts based on Ni(mnt)2 (mnt2− = maleonitriledithiolate) anion and substituted triphenylphosphonium cation

Hou

Zhou

et al. 2008

Transition Met Chem

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Two new salts, [oClBzTPP] 2 + [Ni(mnt) 2 ] 2-(1) and [oClBzTPP] + [Ni(mnt) 2 ] - (2) ([oClBzTPP] + = 1-(2 0 -chlorobenzyl)triphenylphosphonium and mnt 2-= maleonitriledithiolate) have been prepared and characterized by elemental analyses, UV, IR, MS spectra, single crystal X-ray diffraction, and magnetic susceptibility. The Ni ions of the Ni(mnt) 2 anions for 1 and 2 exhibit the square-planar coordination geometry. The Ni(III) ions of 2 form a 1D zigzag alternating magnetic chain within a Ni(mnt) 2 -column through NiÁÁÁS, SÁÁÁS, or NiÁÁÁNi interactions. The C-HÁÁÁN, C-HÁÁÁS, C-HÁÁÁp hydrogen bonds or pÁÁÁp stacking interactions play important roles in the molecular stabilizing and stacking of 1 and 2. Magnetic susceptibility measurements in the temperature range 1.8-300 K show that 2 exhibits diamagnetic behavior.

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Stereochemistry of four-coordinate bis(methinodiphosphinate)metal(II) chelate complexes

Cited by 148 publications

References 4 publications

Synthesis and Investigation of Chalcogen Atom Substituted Dinitriles and Porphyrazines

Synthesis and Investigation of Chalcogen Atom Substituted Dinitriles and Porphyrazines

Synthesis, characterization, DFT and Td-dfT study of the [Fe(mnt)(L)(t-BuNC) 2] octahedral complex (L = phen, bipy)

Syntheses, crystal structures, and properties of two salts based on Ni(mnt)2 (mnt2− = maleonitriledithiolate) anion and substituted triphenylphosphonium cation

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