Dinuclear neodymium and lanthanum bis(2,6-diisopropylphenyl) phosphate complexes bearing a hydroxide ligand: catalytic activity of the Nd complex in 1,3-diene polymerization
作者:Mikhail E. Minyaev、Sof'ya A. Korchagina、Alexander N. Tavtorkin、Andrei V. Churakov、Ilya E. Nifant'ev
DOI:10.1107/s2053229618006666
日期:2018.6.1
core. The structure of (2) consists of an [Nd2(2,6‐iPr2C6H3‐O)2POO}4(OH)(H2O)4]+ cation and a [(2,6‐iPr2C6H3‐O)2POO]− anion, which are bound via four intermolecular O—H…O hydrogen bonds. The molecular structure of (1) displays two O—H…O hydrogen bonds between OH/H2O ligands and a κ1O‐terminal organophosphate ligand, which resembles, to some extent, the `free' [(2,6‐iPr2C6H3‐O)2POO]− anion in (2). NMR
K [(2,6 - i Pr 2 C 6 H 3 -O)2 POO]与LaCl 3(H 2 O)7或Nd(NO 3)3(H 2 O)6在3中的反应摩尔比为1:1,然后真空干燥并从烷烃中重结晶,导致形成过季戊二酮[双(2,6-二异丙基苯基)磷酸]-羟基过氧化-二镧正己烷二溶剂化物[La 2(C 24 H 34 O 4 P)5(OH)(H 2 O)2 ]·2C 6H 14,(1)·2(己烷)和四水合四[双(2,6-二异丙基苯基)磷酸]-μ-羟基氧化二钕双(2,6-二异丙基苯基)磷酸庚烷二溶剂化物,[Nd 2(C 24 H 34 O 4 P)4(OH)(H 2 O)4 ]·2C 6 H 14,(2)·2(庚烷)。这些化合物分别在P 2 1 / n和P空间基团中结晶。二芳基取代的有机磷酸酯配体表现出三种不同的配位模式,即。κ 2ø,ö '末端[在(1)和(2)],κ ö末端[在(1)]和μ 2 -κ