Structure of bis(tetraethylammonium) bis[dimercaptomaleodinitrilato(2–)-S,S']nickelate(II), [N(C2H5)4]2[Ni(C4N2S2)2]

Mahadevan, C.; Seshasayee, M.; Radha, A. V.; Manoharan, P. T.

doi:10.1107/s0108270184010519

Cited by 16 publications

(11 citation statements)

References 3 publications

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“…The individual S-Ni-S angles in 2 deviate more from 90°than nearly all of the other square planar Ni II -tetrathiolate complexes it can be compared to. 38,52,[55][56][57][58][59] The interligand angles in 2 are smaller than the intraligand angles; a similar pattern is seen in 1 and probably reflects an influence of the bite angle of L. The nickel ion is slightly displaced out of the S 4 plane (Ni to S 4 plane distance 0.014 Å).…”

Section: Resultsmentioning

confidence: 75%

Synthesis and Characterization of Square Planar Nickel(II)−Arylthiolate Complexes with the Biphenyl-2,2‘-dithiolate Ligand

Erkizia

Conry

2000

Inorg. Chem.

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Two new NiIIS4 complexes with the biphenyl-2,2'-dithiolate ligand (L) are reported. The dinuclear complex 1, [Ni2L3]2-, was formed in the reaction of 2-3 equiv of Na2L and [NiCl4]2- and the mononuclear complex [NiL2]2- (2) by using 4-10 equiv of Na2L. Complexes 1 and 2 have been crystallographically characterized. (Et4N)2[1].0.5S2Ph2, CH3CN: C60H71N3Ni2S7, triclinic, P1, a = 13.806(2) A, b = 14.267(2) A, c = 16.873(2) A, alpha = 69.263(10) degrees, beta = 69.267(8) degrees, gamma = 83.117(10) degrees, Z = 2, R1 = 0.0752 (wR2 = 0.2011). (Et4N)(Na.CH3CN)[2]: C34H39N2NaNiS4, triclinic, P1, a = 9.9570(10) A, b = 13.2670(10) A, c = 13.9560(10) A, alpha = 108.489(7) degrees, beta = 90.396(6) degrees, gamma = 103.570(4) degrees, Z = 2, R1 = 0.0390 (wR2 = 0.0995). Both complexes are square planar about the nickel ion in the solid state as well as in solution. Most Ni(II)-thiolate complexes are square planar except the tetrahedral mononuclear complexes with monodentate arylthiolate ligands that cannot force a square planar geometry. The ligand (L) has some flexibility to change its bite angle via the phenyl-phenyl bond and should not force a planar geometry on its complexes either. Therefore, it is interesting that 2 has adopted a square planar structure. Complex 2 readily converts to 1 in solution when not in the presence of excess L in a process that is presumably similar to that known for other mononuclear, bidentate ligated Ni(II) complexes. Both complexes, at least in the solid state, appear to have an inclination to bind another metal ion on one face of the complex (Ni2+ in 1, Na+ in 2). We hope to take advantage of this in future work to synthesize relevant model complexes for the active sites of the nickel-iron hydrogenases after suitable modifications are made to L.

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Section: Resultsmentioning

confidence: 75%

Synthesis and Characterization of Square Planar Nickel(II)−Arylthiolate Complexes with the Biphenyl-2,2‘-dithiolate Ligand

Erkizia

Conry

2000

Inorg. Chem.

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“…It is interesting to point out that the structure of this compound has been solved before with different cell parameters and space groups. [22] The structure of this complex was as expected with very little unusual features and thus the discussion will be limited. The Ni-S distances are as expected 2.14 Å, and the bite angles of the two ligands are ~92°.…”

Section: Molecular Structurementioning

confidence: 71%

Synthesis, characterization, spectroscopy, electronic and redox properties of a new nickel dithiolene system

Basu

Nigam

Mogesa

et al. 2010

Inorganica Chimica Acta

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A new dithiolene ligand with 3,5-dibromo substituted phenyl groups was designed and synthesized. The protected form of the ligand was reacted with a nickel salt providing neutral Ni(S2C2(3,5-C6H3Br2)2)2 and anionic [Ni(S2C2(3,5-C6H3Br2)2)2]− isolated as a Bu4N+ salt. Both were characterized by UV-visible and IR spectroscopy and compared with the similar known molecular systems. They exhibit intense low-energy transitions that are characteristic of such systems. The electrochemical behavior of these molecules was investigated by cyclic voltammetry.

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“…For general background, see: Kawski et al (2007). For related structures, see: Reffner & McCrone (1959); Dattagupta & Saha (1973); Herbstein et al (1984); Mahadevan et al (1982); Habibi et al (2007).…”

Section: Related Literaturementioning

confidence: 99%

“…Although the unit-cell parameters of DMABA have been reported (Reffner & McCrone, 1959), to our knowledge there is no report on the crystal structure of DMABA. The crystal structures of DMABA hydrobromide (Dattagupta & Saha, 1973), a 1:1 complex in which DMABA acts as a guest molecule in channels (Herbstein et al, 1984), a tin complex in which DMABA serves as a ligand coordinating through its O atom (Mahadevan et al, 1982), and of a 1:1 cocrystal of DMABA and 6-phenyl-1,3,5-triazine-2,4-diamine (Habibi et al, 2007) have been reported. We report here the crystal structure of the title compound.…”

Section: -(Dimethylamino)benzaldehydementioning

confidence: 99%

4-(Dimethylamino)benzaldehyde

Gao

Zhu

2008

Acta Crystallogr E Struct Rep Online

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The title compound, C9H11NO, crystallizes with two independent but essentially identical molecules in the asymmetric unit, which are linked via a C—H⋯π interaction. In both molecules, the aldehyde and dimethylamine groups are essentially coplanar with the attached benzene ring. In the crystal structure, C—H⋯O hydrogen bonds link one type of independent molecules into a chain along the a axis. In addition, the structure is stabilized by π–π stacking interactions involving the benzene rings [centroid-to-centroid distance = 3.697 (2) Å].

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Structure of bis(tetraethylammonium) bis[dimercaptomaleodinitrilato(2–)-S,S']nickelate(II), [N(C2H5)4]2[Ni(C4N2S2)2]

Cited by 16 publications

References 3 publications

Synthesis and Characterization of Square Planar Nickel(II)−Arylthiolate Complexes with the Biphenyl-2,2‘-dithiolate Ligand

Synthesis and Characterization of Square Planar Nickel(II)−Arylthiolate Complexes with the Biphenyl-2,2‘-dithiolate Ligand

Synthesis, characterization, spectroscopy, electronic and redox properties of a new nickel dithiolene system

4-(Dimethylamino)benzaldehyde

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