Solvent-controlled generation of two pairs of mononuclear single-strand helical copper(II) complexes of 2,6-pyridinediylbis(2-pyridinyl)methanone: metal-promoted hydrolysis and solvolysis with asymmetric induction

被引:20
作者
Chen, XD [1 ]
Mak, TCW [1 ]
机构
[1] Chinese Univ Hong Kong, Dept Chem, Hong Kong, Hong Kong, Peoples R China
关键词
helical copper(II) complex; pyridyl ketone; hydrolysis; solvolysis;
D O I
10.1016/j.ica.2004.11.024
中图分类号
O61 [无机化学];
学科分类号
070301 ; 081704 ;
摘要
Two pairs of stable mononuclear single-strand helical complexes were obtained through controlled self-assembly using 2,6-pyridinediylbis(2-pyridinyl)methanone (L) and copper(II) salts. CuL(NO3)(2) (1) and [CuL'(H2O)](NO3)(2) (2) represent a pair in which L takes the diketo form in 1 but hydrolyzed in 2, while CuLCl2 (3) and [CuL''Cl]Cl (4) constitute another pair in which L remains intact in 3 but solvolyzed in 4. A mechanism of the metal-promoted hydrolysis and solvolysis of ligand L with asymmetric induction is proposed through studies on the crystal structures of these complexes. (c) 2004 Elsevier B.V. All rights reserved.
引用
收藏
页码:1107 / 1112
页数:6
相关论文
共 21 条
[11]   Octanuclearity and tetradecanuclearity in manganese chemistry:: an octanuclear manganese(II)/(III) complex featuring the novel [Mn8(μ4-O)2(μ3-OH)2]14+ core and [Mn10IIMn4IIIO4(O2CMe)20{(2-py)2C(OH)O}4] (2-py=2-pyridyl) [J].
Milios, CJ ;
Kefalloniti, E ;
Raptopoulou, CP ;
Terzis, A ;
Vicente, R ;
Lalioti, N ;
Escuer, A ;
Perlepes, SP .
CHEMICAL COMMUNICATIONS, 2003, (07) :819-821
[12]   Families of polynuclear manganese, cobalt, nickel and copper complexes stabilized by various forms of di-2-pyridyl ketone [J].
Papaefstathiou, GS ;
Perlepes, SP .
COMMENTS ON INORGANIC CHEMISTRY, 2002, 23 (04) :249-274
[13]   Helicates as versatile supramolecular complexes [J].
Piguet, C ;
Bernardinelli, G ;
Hopfgartner, G .
CHEMICAL REVIEWS, 1997, 97 (06) :2005-2062
[14]   STUDY OF COORDINATION BEHAVIOR OF VARIOUS 2-PYRIDYL-KETONES .5. INTERACTION OF DI-(2-PYRIDYL)KETONE WITH SALTS OF COBALT, NICKEL AND IRON [J].
RATTANAPHANI, V ;
MCWHINNI.WR .
INORGANICA CHIMICA ACTA, 1974, 9 (03) :239-244
[15]   Mono- and dinuclear complexes of a flexible Schiff base ligand -: Crystal structures of a bishelicate and two acentric monohelicates [J].
Sanmartín, J ;
García-Deibe, AM ;
Bermejo, MR ;
Novio, F ;
Navarro, D ;
Fondo, M .
EUROPEAN JOURNAL OF INORGANIC CHEMISTRY, 2003, (21) :3905-3913
[16]  
Sheldrick G. M., 1996, SADABS PROGR EMP ABS
[17]  
SHELDRICK GM, 1997, SHELXTL 5 1 WIND NT
[18]   THE METAL PROMOTED HYDRATION OF DI-2-PYRIDYL KETONE - UV-VIS SPECTRA OF CU(II) AND CR(III) IN AQUEOUS-SOLUTION WITH DI-2-PYRIDYL KETONE AND THE X-RAY STRUCTURE-ANALYSIS OF BIS-2,2',N,N'-BIPYRIDYL KETONE HYDRATE CHROMIUM(III) CHLORIDE AND RUTHENIUM [J].
SOMMERER, S ;
JENSEN, WP ;
JACOBSON, RA .
INORGANICA CHIMICA ACTA, 1990, 172 (01) :3-11
[19]   Noncovalent ligand strands for transition-metal helicates: The straightforward and stereoselective self-assembly of dinuclear double-stranded helicates using hydrogen bonding [J].
Telfer, SG ;
Sato, T ;
Kuroda, R .
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION, 2004, 43 (05) :581-584
[20]   Metal complexes with a chiral N4 symmetrical Schiff base.: Crystal structures of the ligand and its Cu(II) and Ni(II) "mono-helicates" [J].
Vázquez, M ;
Bermejo, MR ;
Sanmartín, J ;
García-Deibe, AM ;
Lodeiro, C ;
Mahía, J .
JOURNAL OF THE CHEMICAL SOCIETY-DALTON TRANSACTIONS, 2002, (06) :870-877