Novel linear hexanuclear cobalt string complexes (Co6(12+)) and one-electron reduction products (Co6(11+)) supported by four bpyany2- ligands

Dalton Transactions : an International Journal of Inorganic Chemistry
Chih-Hsien ChienShie-Ming Peng

Abstract

The new ligand, 2,7-bis(alpha-pyridylamino)-1,8-naphthyridine (H2bpyany), was synthesized by the reaction of 2,7-dichloro-1,8-naphthyridine with 2-aminopyridine in the presence of t-BuOK under palladium(0)-catalyzed conditions. The preparation and characterization of novel hexacobalt string complexes, [Co6(mu6-bpyany)4(NCS)2](PF6)n (n=1 (1); n=2 (2)) and [Co6(mu6-bpyany)4(OTf)2](OTf)n (n = 2 (3); n = 1 (4)) are presented. The crystal structures for compounds have been determined by X-ray crystallography. Compounds 1 and 4 have the Co6 11+ configurations and are air-stable. Compounds 2 and 3 with Co6 12+ configurations are structurally similar to 1 and 4, respectively. The electrochemistry of 1 displays four redox couples at E1/2= -0.55, +0.38, +0.91, and +1.18 V (vs. Ag/AgCl). The magnetic data show that compounds 1 and 4 are in a spin state of S = 1/2, and 2 and 3 in a spin state of S = 1. The results of the EHMO calculations on compounds 1 and 2 are in agreement with their magnetic measurements.

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Citations

Mar 19, 2009·Chemical Communications : Chem Comm·Yukie TakemuraMasahiro Mikuriya
Apr 16, 2011·Dalton Transactions : an International Journal of Inorganic Chemistry·Konstantin V ShuvaevLaurence K Thompson
Apr 19, 2018·Dalton Transactions : an International Journal of Inorganic Chemistry·Takuya ShigaHiroki Oshio
Oct 25, 2016·Dalton Transactions : an International Journal of Inorganic Chemistry·Brian S DolinarJohn F Berry
Nov 2, 2016·Dalton Transactions : an International Journal of Inorganic Chemistry·Lien-Hung TsouShie-Ming Peng
Apr 29, 2018·Angewandte Chemie·N V Satyachand HarisomayajulaYi-Chou Tsai
Nov 15, 2006·Dalton Transactions : an International Journal of Inorganic Chemistry·F Albert CottonQingsheng Wang
Jan 21, 2009·Dalton Transactions : an International Journal of Inorganic Chemistry·Wen-Zhen WangShie-Ming Peng
Oct 23, 2010·Chemistry : a European Journal·Emilio PardoCatalina Ruiz-Pérez
Mar 10, 2007·Chemical Communications : Chem Comm·Rayyat H IsmayilovShie-Ming Peng
Feb 14, 2007·Dalton Transactions : an International Journal of Inorganic Chemistry·Wen-Zhen WangShie-Ming Peng
Jul 4, 2007·Dalton Transactions : an International Journal of Inorganic Chemistry·Rayyat Huseyn IsmayilovShie-Ming Peng
Jan 25, 2008·Dalton Transactions : an International Journal of Inorganic Chemistry·Dimitrios A PantazisJohn E McGrady
Mar 7, 2014·Dalton Transactions : an International Journal of Inorganic Chemistry·Wen-Zhen WangShie-Ming Peng
Apr 4, 2013·Dalton Transactions : an International Journal of Inorganic Chemistry·Sheng HuDian-Rong Lin
Sep 26, 2013·Dalton Transactions : an International Journal of Inorganic Chemistry·Takuya ShigaHiroki Oshio
Jan 7, 2010·The Journal of Physical Chemistry. a·Zahra TabookhtCoen de Graaf
Jun 4, 2021·Chemical Reviews·Pierre Braunstein, Andreas A Danopoulos
Sep 22, 2011·Inorganic Chemistry·Michael NippeJohn F Berry
Jan 3, 2007·Inorganic Chemistry·Xavier LópezMarie-Madeleine Rohmer

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