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Magnetic and liquid-crystalline properties of chlorido- and cyanato-bridged chain complexes of mixed-valent dinuclear ruthenium(ii,iii) 3,4,5-trialkoxybenzoates†
New Journal of Chemistry ( IF 3.3 ) Pub Date : 2018-11-16 00:00:00 , DOI: 10.1039/c8nj03436b
Hideaki Ishida 1, 2, 3 , Makoto Handa 3, 4, 5 , Ichiro Hiromitsu 3, 5, 6 , Seiji Ujiie 3, 7, 8 , Daisuke Yoshioka 1, 2, 3 , Ryoji Mitsuhashi 1, 2, 3 , Masahiro Mikuriya 1, 2, 3
Affiliation  

A series of cyanato-bridged chain complexes of mixed-valent dinuclear ruthenium(II,III) 3,4,5-trialkoxybenzoates, [Ru2{3,4,5-(n-CmH2m+1O)3C6H2CO2}4(OCN)]n (mOCN) (m = 2–7, 9–18), were synthesized. IR spectra of mOCN showed that the cyanato ligands adopt a μ1,1-O mode to form zigzag chains. Temperature dependence of magnetic susceptibilities of mOCN showed that the antiferromagnetic interaction between the dinuclear units is strong compared with that of the chlorido-bridged derivatives [Ru2{3,4,5-(n-CmH2m+1O)3C6H2CO2}4Cl]n (mCl). The liquid-crystalline behaviors for mCl with m = 5–18 and mOCN with m = 6–18 were confirmed by polarized-microscopy, X-ray powder diffraction (XRPD), and differential scanning calorimetry (DSC) measurements. The XRPD data confirmed a zigzag form for all samples of mCl. Furthermore, single-crystal X-ray diffraction analyses revealed a chain structure of pentyloxy derivative 5Cl·2nH2O and a pseudo chain structure of hexyloxy derivative [Ru2{3,4,5-(n-C6H13O)3C6H2CO2}4(C2H5OH)2][Ru2{3,4,5-(n-C6H13O)3C6H2CO2}4Cl2]·2C2H5OH (6Cl′·2C2H5OH); the XRPD data indicated that the structural change occurs in ambient atmosphere.

中文翻译:

chlorido-和混合价的双核钌(的氰桥连链复合的磁性和液晶特性IIIII)3,4,5- trialkoxybenzoates

一系列混合价双核钌(IIIII)3,4,5-三烷氧基苯甲酸酯[[Ru 2 {3,4,5-(n -C m H 2 m +1 O)3合成了C 6 H 2 CO 2 } 4(OCN)nm OCN)(m = 2-7,9-18)。的红外光谱OCN表明,氰配体采用μ 1,1 -O模式形式锯齿链。m OCN磁化率的温度依赖性结果表明,双核单元之间的反铁磁相互作用强于氯桥联衍生物[Ru 2 {3,4,5-(n -C m H 2 m +1 O)3 C 6 H 2 CO 2 } 4 Cl] nm Cl)。对于液晶行为= 5-18和OCN通过偏光显微镜,X射线粉末衍射(XRPD)和差示扫描量热法(DSC)测量确定= 6–18。XRPD数据证实m Cl的所有样品均呈锯齿形。此外,单晶X射线衍射分析显示戊氧基衍生物5Cl ·2 n H 2 O的链结构和己氧基衍生物[Ru 2 {3,4,5-(n -C 6 H 13 O )3 C 6 H 2 CO 2 } 4(C 2 H 5 OH)2 ] [Ru2 {3,4,5-( n -C 6 H 13 O) 3 C 6 H 2 CO 2 } 4 Cl 2 ]·2C 2 H 5 OH( 6Cl' ·2C 2 H 5 OH);XRPD数据表明结构变化发生在周围大气中。
更新日期:2018-11-16
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