Mono- and Dinuclear Macrocyclic Calcium Complexes as Platforms for Mixed-Metal Complexes and Clusters

被引:12
作者
Connolly, Emma A. [1 ]
Leeland, James W. [1 ]
Love, Jason B. [1 ]
机构
[1] Univ Edinburgh, EaStCHEM Sch Chem, Joseph Black Bldg,David Brewster Rd, Edinburgh EH9 3FJ, Midlothian, Scotland
基金
英国工程与自然科学研究理事会;
关键词
RING-OPENING POLYMERIZATION; STRUCTURAL-CHARACTERIZATION; CYCLIC MONOMERS; POLY(LACTIDE); HYDRIDE; LIGANDS; ALKALI;
D O I
10.1021/acs.inorgchem.5b02289
中图分类号
O61 [无机化学];
学科分类号
070301 ; 081704 ;
摘要
Mono- and dinuclear calcium complexes of the Schiff-base macrocycles H4L have been prepared and characterized spectroscopically and crystallographically. In the formation of Ca(THF)(2)(H2L1), Ca-2(THF)(2)(mu-THF)(L-1), and Ca-2(THF)(4)(L-2), the ligand framework adopts a bowl-shaped conformation instead of the conventional wedge, Pacman-shaped structure as seen with the anthracenyl-hinged complex Ca-2(py)(5)(L-3). The mononuclear calcium complex Ca(THF)(2)(H2L1) reacts with various equivalents of LiN(SiMe3)(2) to form calcium/alkali metal clusters and dinuclear transition metal complexes when reacted subsequently with transition metal salts. The dinuclear calcium complex Ca-2(THF)(2)(mu- THF)(L-1), when reacted with various equivalents of NaOH, is shown to act as a platform for the formation of calcium/alkali metal hydroxide clusters, displaying alternate wedged and bowl-shaped conformations.
引用
收藏
页码:840 / 847
页数:8
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