Axial Distortion and Electronic Structure in the Macrocyclic Complexes, Diacido-S,S'-o-xylyl-2,3 pentanedionebis(mercaptoethylimine) nickel(II)

Brubaker, George R.; Busch, Daryle H.

doi:10.1021/ic50046a007

Cited by 45 publications

(26 citation statements)

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“…Figure9. Electronic spectra of Ni(Me2[14]py-dieneN4)(NCS)2: A, measured at 77 K; B, at room temperature; C, d-d bands identified by Gaussian analysis 1.…”

mentioning

confidence: 99%

The spectrochemical properties of tetragonal complexes of high spin nickel(II) containing macrocyclic ligands

Martin¹,

Sperati²,

Busch³

1977

J. Am. Chem. Soc.

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181

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“…Figure9. Electronic spectra of Ni(Me2[14]py-dieneN4)(NCS)2: A, measured at 77 K; B, at room temperature; C, d-d bands identified by Gaussian analysis 1.…”

mentioning

confidence: 99%

The spectrochemical properties of tetragonal complexes of high spin nickel(II) containing macrocyclic ligands

Martin¹,

Sperati²,

Busch³

1977

J. Am. Chem. Soc.

Self Cite

181

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“…Found: C, 28.08; H, 4.85; N, 9.34; Ni, 9.78. Preparation of czs-A[NiM (16)]Cl(PF6). A filtered acetone solution (13 ml) saturated with lithium chloride was added to a filtered acetone solution (30 ml) containing cz's-[NiM( 16)] (PF6)2 (2.0 g).…”

Section: Methodsmentioning

confidence: 99%

“…6 To our knowledge, reactions using ,ß-unsaturated ketones and 1,3-diamines with or without hydrogen ions present have not been employed to prepare 16-membered cyclic ligands or their complexes. The complex III, which does contain a 16-membered ligand formally derived from mesityl oxide, has been prepared but via a reaction between tris(l,3-diaminopropane)nickel(II) perchlorate and acetone.7 All of the macrocyclic complexes prepared from ,ß-unsaturated ketones and diamines containing two or more CH2 moieties between the primary amine nitrogen atoms can, in principle, be formed in two distinctly geometric forms-one containing the imine functions trans to one another and the other containing the imine functions cis to one another.…”

Section: Introductionmentioning

confidence: 99%

Synthesis and study of a nickel(II) complex containing a macrocyclic ligand derived from 1,3-diaminopropane and methyl vinyl ketone1

Myers¹,

Rose²

1973

Inorg. Chem.

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The macrocyclic complex IV can be synthesized from 1,3-diaminopropane and methyl vinyl ketone in the presence of both Ni(I1) and hydrogen ions. Several derivatives of IV are described including two where the macrocyclic ligand must be present in a folded configuration within a hexacoordinate complex. Evidence is presented which indicates that species IIB and IV have a greater tendency to accept fifth and sixth ligands than do complexes IIA and 111. The detailed description of the separation and purification of two interconvertible isomers of IV is presented. It is proposed that these isomers are the meso and racemic forms of IV.

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“…Under D 4h symmetry these bands may be assigned to the following transitions. 37 The value of these parameters have been given in table-3. …”

Section: Magnetic Moment and Electronic Spectramentioning

confidence: 99%

Abnormal Magnetic Moment and Zero Field Splitting of Some Nickel (II) Complexes

Ranjan

Sinha

Kumar

et al. 2017

IRA-JAS

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Some complexes of Ni(II) have been prepared with 2-thio-3-acetyl hydantoin (TAHN) and 2-formyl pyridine thiosemicarbazone (FPTS). On the basis of elemental analysis and molar conductivity, the complexes have been formulated as NiL2X2, where L = TAHN or FPTS and X = Cl–, Br–, NCS–, ClO4–. The infrared spectra of complexes and free ligand reveal that the ligand TAHN is co-ordinated through sulphur and acetyl oxygen, while FPTS ligand co-ordinates through heterocyclic nitrogen and sulphur to Ni(II) metal ion. The magnetic moment of these complexes are found to be 3.20-3.25 B.M. The values are greater than value (2.828 B.M) corresponding to two unpaired electrons of a d8-system. The appearance of four absorption bands in their electronic spectra reveal, the tetragonal distortion in the octahedral symmetry of complexes. The zero field splitting parameter(D) and the other crystal field parameters like Dq(xy), Dq(z), Dt have been calculated. The results show that, the tetragonal distortion parameter (Dt) increases in the order of NCS– < Cl– < Br– while the zero field splitting parameter (D) also increases in the same order for both the planer ligands.

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Axial Distortion and Electronic Structure in the Macrocyclic Complexes, Diacido-S,S'-o-xylyl-2,3 pentanedionebis(mercaptoethylimine) nickel(II)

Cited by 45 publications

References 0 publications

The spectrochemical properties of tetragonal complexes of high spin nickel(II) containing macrocyclic ligands

The spectrochemical properties of tetragonal complexes of high spin nickel(II) containing macrocyclic ligands

Synthesis and study of a nickel(II) complex containing a macrocyclic ligand derived from 1,3-diaminopropane and methyl vinyl ketone1

Abnormal Magnetic Moment and Zero Field Splitting of Some Nickel (II) Complexes

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