Metal complexes derived from hydrazoneoxime ligands: III – Synthesis, characterization and electrospray ionization mass spectra of some nickel(II) complexes with aroylhydrazoneoximes
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| Title: | Metal complexes derived from hydrazoneoxime ligands: III – Synthesis, characterization and electrospray ionization mass spectra of some nickel(II) complexes with aroylhydrazoneoximes |
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| Authors: | Salem, Nahed M.H.1, El-Sayed, L.1, Foro, Sabine2, Haase, Wolfgang3, Iskander, Magdi F.1 m.iskander@link.net |
| Source: | Polyhedron. Sep2007, Vol. 26 Issue 15, p4161-4172. 12p. |
| Subjects: | Metal complexes, Hydrazones, Ligands (Chemistry), Electrospray ionization mass spectrometry |
| Abstract: | Abstract: Five binuclear nickel(II) complexes [{Ni(L-R)}2] derived from diacetylmonooxime aroylhydrazones (H2L-R) have been prepared and characterized. In these complexes the oximate group functions as a bridge between the two nickel(II) ions. The corresponding octahedral bisligand complexes [Ni(HL-R)2] have been also prepared and characterized. Reaction of [{Ni(L-R)}2] with excess pyrazole (HPyr) afforded square planar [Ni(L-R)HPyr] complexes. The structure of [Ni(L-H)HPyr] (11), [Ni(L-CH3O)HPyr] (13) and [Ni(L-Cl)HPyr] (14) have been determined by single-crystal X-ray diffraction. In these complexes, the Ni(II) is coordinated to the oximate nitrogen, hydrazone nitrogen and enolimine oxygen of the aroylhydrazoneoxime ligand, the fourth coordination site is occupied by pyrazole nitrogen. In 11 and 13 the molecular units are linked together by intramolecular NH⋯O hydrogen bonds forming a helical chain propagating along a and b axis respectively. The helical structure is stabilized by CH⋯O, CH⋯π and π⋯π noncovalent interactions. The structure of 14 consists of two independently crystallographic molecular units. The Ni1 molecular units are assembled together by CH⋯O and CH⋯Cl1 interactions forming a two dimensional sheet, while the Ni2 units are jointed together by CH⋯O and CH⋯C interactions forming a chain extending along b-axis which are enclosed between sheets of Ni1 units. [Copyright &y& Elsevier] |
| Copyright of Polyhedron is the property of Pergamon Press - An Imprint of Elsevier Science and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) | |
| Database: | Engineering Source |
| FullText | Text: Availability: 0 |
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| Header | DbId: egs DbLabel: Engineering Source An: 26414218 AccessLevel: 6 PubType: Academic Journal PubTypeId: academicJournal PreciseRelevancyScore: 0 |
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| Items | – Name: Title Label: Title Group: Ti Data: Metal complexes derived from hydrazoneoxime ligands: III – Synthesis, characterization and electrospray ionization mass spectra of some nickel(II) complexes with aroylhydrazoneoximes – Name: Author Label: Authors Group: Au Data: <searchLink fieldCode="AR" term="%22Salem%2C+Nahed+M%2EH%2E%22">Salem, Nahed M.H.</searchLink><relatesTo>1</relatesTo><br /><searchLink fieldCode="AR" term="%22El-Sayed%2C+L%2E%22">El-Sayed, L.</searchLink><relatesTo>1</relatesTo><br /><searchLink fieldCode="AR" term="%22Foro%2C+Sabine%22">Foro, Sabine</searchLink><relatesTo>2</relatesTo><br /><searchLink fieldCode="AR" term="%22Haase%2C+Wolfgang%22">Haase, Wolfgang</searchLink><relatesTo>3</relatesTo><br /><searchLink fieldCode="AR" term="%22Iskander%2C+Magdi+F%2E%22">Iskander, Magdi F.</searchLink><relatesTo>1</relatesTo><i> m.iskander@link.net</i> – Name: TitleSource Label: Source Group: Src Data: <searchLink fieldCode="JN" term="%22Polyhedron%22">Polyhedron</searchLink>. Sep2007, Vol. 26 Issue 15, p4161-4172. 12p. – Name: Subject Label: Subjects Group: Su Data: <searchLink fieldCode="DE" term="%22Metal+complexes%22">Metal complexes</searchLink><br /><searchLink fieldCode="DE" term="%22Hydrazones%22">Hydrazones</searchLink><br /><searchLink fieldCode="DE" term="%22Ligands+%28Chemistry%29%22">Ligands (Chemistry)</searchLink><br /><searchLink fieldCode="DE" term="%22Electrospray+ionization+mass+spectrometry%22">Electrospray ionization mass spectrometry</searchLink> – Name: Abstract Label: Abstract Group: Ab Data: Abstract: Five binuclear nickel(II) complexes [{Ni(L-R)}2] derived from diacetylmonooxime aroylhydrazones (H2L-R) have been prepared and characterized. In these complexes the oximate group functions as a bridge between the two nickel(II) ions. The corresponding octahedral bisligand complexes [Ni(HL-R)2] have been also prepared and characterized. Reaction of [{Ni(L-R)}2] with excess pyrazole (HPyr) afforded square planar [Ni(L-R)HPyr] complexes. The structure of [Ni(L-H)HPyr] (11), [Ni(L-CH3O)HPyr] (13) and [Ni(L-Cl)HPyr] (14) have been determined by single-crystal X-ray diffraction. In these complexes, the Ni(II) is coordinated to the oximate nitrogen, hydrazone nitrogen and enolimine oxygen of the aroylhydrazoneoxime ligand, the fourth coordination site is occupied by pyrazole nitrogen. In 11 and 13 the molecular units are linked together by intramolecular NH⋯O hydrogen bonds forming a helical chain propagating along a and b axis respectively. The helical structure is stabilized by CH⋯O, CH⋯π and π⋯π noncovalent interactions. The structure of 14 consists of two independently crystallographic molecular units. The Ni1 molecular units are assembled together by CH⋯O and CH⋯Cl1 interactions forming a two dimensional sheet, while the Ni2 units are jointed together by CH⋯O and CH⋯C interactions forming a chain extending along b-axis which are enclosed between sheets of Ni1 units. [Copyright &y& Elsevier] – Name: AbstractSuppliedCopyright Label: Group: Ab Data: <i>Copyright of Polyhedron is the property of Pergamon Press - An Imprint of Elsevier Science and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.) |
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| RecordInfo | BibRecord: BibEntity: Identifiers: – Type: doi Value: 10.1016/j.poly.2007.05.010 Languages: – Code: eng Text: English PhysicalDescription: Pagination: PageCount: 12 StartPage: 4161 Subjects: – SubjectFull: Metal complexes Type: general – SubjectFull: Hydrazones Type: general – SubjectFull: Ligands (Chemistry) Type: general – SubjectFull: Electrospray ionization mass spectrometry Type: general Titles: – TitleFull: Metal complexes derived from hydrazoneoxime ligands: III – Synthesis, characterization and electrospray ionization mass spectra of some nickel(II) complexes with aroylhydrazoneoximes Type: main BibRelationships: HasContributorRelationships: – PersonEntity: Name: NameFull: Salem, Nahed M.H. – PersonEntity: Name: NameFull: El-Sayed, L. – PersonEntity: Name: NameFull: Foro, Sabine – PersonEntity: Name: NameFull: Haase, Wolfgang – PersonEntity: Name: NameFull: Iskander, Magdi F. IsPartOfRelationships: – BibEntity: Dates: – D: 20 M: 09 Text: Sep2007 Type: published Y: 2007 Identifiers: – Type: issn-print Value: 02775387 Numbering: – Type: volume Value: 26 – Type: issue Value: 15 Titles: – TitleFull: Polyhedron Type: main |
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