Metal-ion Selectivity by Macrocyclic Ligands. Part 1. The Interaction of NiII and CuII with Pyridinyl-derived N3O2 Macrocycles; The X-Ray Structures of a Free Macrocycle, its Endomacrocyclic Complexes of NiII and CuII and an Exomacrocyclic Nickel(II) Complex

DOI: 10.1039/DT9910000627

Source and publish data:

Journal of the Chemical Society, Dalton Transactions p. 627 - 637 (1991)

Update date:2022-08-17

Topics:

Authors:

Bailey, Neil A.

Fenton, David E.

Kitchen, Simon J.

Lilley, Terence H.

Williams, Mark G.

et al. et al.

Read Full Text PDF DownLoad Join now for total 90,000,000 free articles

Article abstract of DOI:10.1039/DT9910000627

The interaction of Cu^II and Ni^II with two macrocycles L¹ and L², each containing an N3O2 donor set, has been investigated.Spectrophotometric studies in dimethyl sulphoxide reveal the formation of complexes with 1:1 and 1:2 metal:ligand ratios and conductometric studies in the same solvent indicated that all of the complexes were 1:2 electrolytes.Conductometric titration of the 1:1 copper(II) complexes with chloride in each case indicated the formation of a 1:1 electrolyte, presumably through co-ordination of a chloride ion to the central copper of each complex.Similar titration of the nickel(II) complexes gave evidence for the formation of dinuclear species; each of these was postulated to contain a bridging chloride anion.The stability constants of the complexes together with their enthalpies of co-ordination have been determined in 95percent methanol.Extraction and related transport experiments were carried out and under the conditions employed Cu^II was favoured over Ni^II.The X-ray crystal structures of the free macrocycle L¹, the 1:1 complexes 1(H2O)>2 and 1(I)>I*MeOH, and the 1:2 complex 1₂(NO3)>NO3*2MeOH have been determined.The metal in 1(H2O)>2 is six-co-ordinate and lies within the folded macrocyclic cavity.The donor set comprises the five macrocyclic donor atoms and a water molecule.Overall, the co-ordination sphere corresponds to a restricted tetragonal rhombic arrangement.The complex 1(I)>*MeOH also has all donors of the macrocycle co-ordinated with an iodide anion occupying the sixth site to yield a distorted-octahedral geometry.The structure of 1₂(NO3)>NO3*2MeOH shows that the nickel is again six-co-ordinated, to the aliphatic nitrogen atoms from two macrocycles (each showing exo co-ordination) and a bidentate nitrate anion.

Full text of DOI:10.1039/DT9910000627

Products guided by the article

Product name:2,6-BIS(CHLOROMETHYL)PYRIDINE

Cas No:3099-28-3

R&D Labs maybe for 3099-28-3

ANHUI CHEM-BRIGHT BIOENGINEERING CO.,LTD

Contact:86-561-4080321

Address:No.8 Lieshan Industrial Zone of Huaibei
Nanjing Chemlin Chemical Co., Ltd.

website:http://www.echemlin.cn

Contact:+86-25-83697070

Address:Rm.902 Longyin Plaza, No. 217 Zhongshan Rd.(N) Nanjing 210009,China
Kunming Biohome Technology Co. Ltd.

website:http://www.biohometech.com/

Contact:86-871-67428869

Address:kunming
Zhengzhou Xinlian Chemical Tech Co. ,Ltd

Contact:0371-65771781 021-52042910

Address:H Part, Building I, No. 700 Gonglu Road, Pudong New Area, Shanghai
Shanghai Egoal Chemical Co.,Ltd

Contact:+86-21-50333091

Address:Yangming Garden Square 3,YangGao North Road 1188, Pudong New District, Shanghai

Relevant to this article

Aspernigrins with anti-HIV-1 activities from the marine-derived fungus Aspergillus Niger SCSIO Jcsw6F30

Doi:10.1016/j.bmcl.2015.12.005
(2016)
Disruption of biofilm formation by the human pathogen Acinetobacter baumannii using engineered quorum-quenching lactonases

Doi:10.1128/AAC.02410-13
(2014)
Novel phenolic antioxidants as multifunctional inhibitors of inducible VCAM-1 expression for use in atherosclerosis

Doi:10.1016/S0960-894X(02)00516-4
(2002)
Transition-metal boryl complexes: Structure and reactivity of CpFe(CO)²Bcat and CpFe(CO)²BPh₂

Doi:10.1021/ja00064a069
(1993)
Sequential N-Arylation of Primary Amines as a Route to Alkyldiarylamines

Doi:10.1021/jo990568u
(1999)
Doi:10.1021/ja01874a027
(1939)

Article Doi