Unambiguous cis-coordination of mono- and bi-dentate Lewis bases to Ni(SN)2 Schiff-base complexes derived from S-alkyl dithiocarbazate

Xu Hui Zhu; Xiao Feng Chen; Xiao Ming Ren; Xiao Zeng You; S. Shanmuga Sundara Raj; Hoong Kun Fun

doi:10.1016/S0277-5387(99)00307-1

Unambiguous cis-coordination of mono- and bi-dentate Lewis bases to Ni(SN)₂ Schiff-base complexes derived from S-alkyl dithiocarbazate

Xu Hui Zhu, Xiao Feng Chen, Xiao Ming Ren, Xiao Zeng You, S. Shanmuga Sundara Raj, Hoong Kun Fun

Research output: Contribution to journal › Article › peer-review

7 Scopus citations

Abstract

The bidentate Schiff-base ligand, HL¹, prepared by condensation of equivalent molar amount of o-nitrobenzaldehyde with S-benzyl dithiocarbazate, yielded the neutral square-planar complex, NiL¹₂ (1) in the presence of Ni(OAc)₂·4H₂O. Addition of pyridine to (1) and phenanthroline (phen) to NiL (3) afforded the adducts NiL¹₂(py)₂·1.5H₂O (2) and NiL(phen) (4), respectively, where H₂L is a known quadridentate (NS)₂ ligand. Single crystal X-ray analysis of (2) and (4) showed that the pyridine rings and phen occupy cis-positions in the octahedral adducts. In both cases, one N-Ni bond in the parent Ni(NS)₂ complexes is severely perturbed, thus facilitating cis-addition of the Lewis bases. The present results together with those reported previously show that cis-addition is preferred in the addition reaction of Ni(NS)₂ Schiff-base complexes derived from S-alkyl dithiocarbazate. Addition of pyridine and 2,2′-bipyridine to NiL (3) is also discussed.

Original language	English
Pages (from-to)	3683-3687
Number of pages	5
Journal	Polyhedron
Volume	18
Issue number	27
DOIs	https://doi.org/10.1016/S0277-5387(99)00307-1
State	Published - 10 Dec 1999
Externally published	Yes

Keywords

Addition reaction
Cis-addition
Crystal structure
S-Alkyl dithiocarbazate
Schiff-base complexes

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title = "Unambiguous cis-coordination of mono- and bi-dentate Lewis bases to Ni(SN)2 Schiff-base complexes derived from S-alkyl dithiocarbazate",

abstract = "The bidentate Schiff-base ligand, HL1, prepared by condensation of equivalent molar amount of o-nitrobenzaldehyde with S-benzyl dithiocarbazate, yielded the neutral square-planar complex, NiL12 (1) in the presence of Ni(OAc)2·4H2O. Addition of pyridine to (1) and phenanthroline (phen) to NiL (3) afforded the adducts NiL12(py)2·1.5H2O (2) and NiL(phen) (4), respectively, where H2L is a known quadridentate (NS)2 ligand. Single crystal X-ray analysis of (2) and (4) showed that the pyridine rings and phen occupy cis-positions in the octahedral adducts. In both cases, one N-Ni bond in the parent Ni(NS)2 complexes is severely perturbed, thus facilitating cis-addition of the Lewis bases. The present results together with those reported previously show that cis-addition is preferred in the addition reaction of Ni(NS)2 Schiff-base complexes derived from S-alkyl dithiocarbazate. Addition of pyridine and 2,2′-bipyridine to NiL (3) is also discussed.",

keywords = "Addition reaction, Cis-addition, Crystal structure, S-Alkyl dithiocarbazate, Schiff-base complexes",

author = "Zhu, {Xu Hui} and Chen, {Xiao Feng} and Ren, {Xiao Ming} and You, {Xiao Zeng} and Raj, {S. Shanmuga Sundara} and Fun, {Hoong Kun}",

year = "1999",

month = dec,

day = "10",

doi = "10.1016/S0277-5387(99)00307-1",

language = "英语",

volume = "18",

pages = "3683--3687",

journal = "Polyhedron",

issn = "0277-5387",

publisher = "Elsevier Ltd",

number = "27",

}

TY - JOUR

T1 - Unambiguous cis-coordination of mono- and bi-dentate Lewis bases to Ni(SN)2 Schiff-base complexes derived from S-alkyl dithiocarbazate

AU - Zhu, Xu Hui

AU - Chen, Xiao Feng

AU - Ren, Xiao Ming

AU - You, Xiao Zeng

AU - Raj, S. Shanmuga Sundara

AU - Fun, Hoong Kun

PY - 1999/12/10

Y1 - 1999/12/10

N2 - The bidentate Schiff-base ligand, HL1, prepared by condensation of equivalent molar amount of o-nitrobenzaldehyde with S-benzyl dithiocarbazate, yielded the neutral square-planar complex, NiL12 (1) in the presence of Ni(OAc)2·4H2O. Addition of pyridine to (1) and phenanthroline (phen) to NiL (3) afforded the adducts NiL12(py)2·1.5H2O (2) and NiL(phen) (4), respectively, where H2L is a known quadridentate (NS)2 ligand. Single crystal X-ray analysis of (2) and (4) showed that the pyridine rings and phen occupy cis-positions in the octahedral adducts. In both cases, one N-Ni bond in the parent Ni(NS)2 complexes is severely perturbed, thus facilitating cis-addition of the Lewis bases. The present results together with those reported previously show that cis-addition is preferred in the addition reaction of Ni(NS)2 Schiff-base complexes derived from S-alkyl dithiocarbazate. Addition of pyridine and 2,2′-bipyridine to NiL (3) is also discussed.

AB - The bidentate Schiff-base ligand, HL1, prepared by condensation of equivalent molar amount of o-nitrobenzaldehyde with S-benzyl dithiocarbazate, yielded the neutral square-planar complex, NiL12 (1) in the presence of Ni(OAc)2·4H2O. Addition of pyridine to (1) and phenanthroline (phen) to NiL (3) afforded the adducts NiL12(py)2·1.5H2O (2) and NiL(phen) (4), respectively, where H2L is a known quadridentate (NS)2 ligand. Single crystal X-ray analysis of (2) and (4) showed that the pyridine rings and phen occupy cis-positions in the octahedral adducts. In both cases, one N-Ni bond in the parent Ni(NS)2 complexes is severely perturbed, thus facilitating cis-addition of the Lewis bases. The present results together with those reported previously show that cis-addition is preferred in the addition reaction of Ni(NS)2 Schiff-base complexes derived from S-alkyl dithiocarbazate. Addition of pyridine and 2,2′-bipyridine to NiL (3) is also discussed.

KW - Addition reaction

KW - Cis-addition

KW - Crystal structure

KW - S-Alkyl dithiocarbazate

KW - Schiff-base complexes

UR - http://www.scopus.com/inward/record.url?scp=0039848303&partnerID=8YFLogxK

U2 - 10.1016/S0277-5387(99)00307-1

DO - 10.1016/S0277-5387(99)00307-1

M3 - 文章

AN - SCOPUS:0039848303

SN - 0277-5387

VL - 18

SP - 3683

EP - 3687

JO - Polyhedron

JF - Polyhedron

IS - 27

ER -

Unambiguous cis-coordination of mono- and bi-dentate Lewis bases to Ni(SN)₂ Schiff-base complexes derived from S-alkyl dithiocarbazate

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