Synthesis, spectral and structural characterization of dinuclear rhodium (II) complexes of the anticonvulsant drug valproate with theophylline and caffeine

被引:29
作者
Abuhijleh, A. Latif [1 ]
Abu Ali, Hijazi [1 ]
Emwas, Abdul-Hamid [2 ]
机构
[1] Birzeit Univ, Dept Chem, W Bank, Israel
[2] Miami Univ, Dept Chem & Biochem, Oxford, OH 45056 USA
关键词
Rhodium (II) valproate; Theophylline; Caffeine; Dinuclear; Bis-adducts; X-ray crystal structure; NUCLEIC-ACID BASES; COPPER(II) COMPLEXES; CRYSTAL-STRUCTURE; ANTITUMOR AGENT; METAL-COMPLEXES; DONOR LIGANDS; ADDUCTS; DNA; GUANINE; BINDING;
D O I
10.1016/j.jorganchem.2009.07.031
中图分类号
O61 [无机化学];
学科分类号
070301 ; 081704 ;
摘要
The dinuclear complex tetra(mu-valproato) dirhodium(II), Rh-2(valp)(4) (1), and its bis-adducts with theophylline, Rh-2(valp)(4)(ThH)(2) (4), or caffeine, Rh-2(valp)(4)(Caf)(2) (5), have been synthesized and characterized by elemental analysis, IR, UV-Vis, magnetic moment, H-1 and C-13 NMR spectroscopic techniques. Spectral data for the complexes are consistent with a dinuclear structure as found for rhodium (II) tetracarboxylate adducts. Theophylline and caffeine bases in complexes 4 and 5, respectively, are axially coordinated to rhodium (II) atoms through the sterically hindered N(9) site. This is confirmed by X-ray crystal structure analyses of complexes 4 and 5. (C) 2009 Elsevier B. V. All rights reserved.
引用
收藏
页码:3590 / 3596
页数:7
相关论文
共 40 条
[1]  
Abuhijleh AL, 1996, J INORG BIOCHEM, V64, P55
[2]   CHARACTERIZATION AND CATECHOLASE-MIMETIC BEHAVIOR OF IMIDAZOLE ADDUCTS OF COPPER(II) VALPROATE - CRYSTAL-STRUCTURE OF THE 2-METHYLIMIDAZOLE ADDUCT [J].
ABUHIJLEH, AL ;
WOODS, C .
INORGANICA CHIMICA ACTA, 1993, 209 (02) :187-193
[3]  
Abuhijleh AL, 1997, J INORG BIOCHEM, V68, P167
[4]  
[Anonymous], 2002, SAINT NT V5 0
[5]  
[Anonymous], 2002, SMART NT V5 6
[6]  
[Anonymous], 2002, SHELXTL NT V6 1
[7]   Interligand interactions affecting specific metal bonding to nucleic acid bases.: A case of [Rh2(OAc)4], [Rh2(HNOCCF3)4], and [Rh2(OAc)2(HNOCCF3)2] toward purine nucleobases and nucleosides [J].
Aoki, K ;
Salam, MA .
INORGANICA CHIMICA ACTA, 2002, 339 :427-437
[9]   RHODIUM(II) CARBOXYLATES [J].
BOYAR, EB ;
ROBINSON, SD .
COORDINATION CHEMISTRY REVIEWS, 1983, 50 (1-2) :109-208
[10]   Direct DNA photocleavage by a new intercalating dirhodium(II/II) complex:: Comparison to Rh2(μ-O2CCH3)4 [J].
Bradley, PM ;
Angeles-Boza, AM ;
Dunbar, KR ;
Turro, C .
INORGANIC CHEMISTRY, 2004, 43 (08) :2450-2452