具有碳硼烷主链的配位驱动自组装体。

Coordination-driven self-assemblies with a carborane backbone.

作者信息

Jude Hershel, Disteldorf Hendrik, Fischer Sonja, Wedge Tim, Hawkridge Adam M, Arif Atta M, Hawthorne M Frederick, Muddiman David C, Stang Peter J

机构信息

Department of Chemistry, University of Utah, 315 South 1400 East, Room 2020, Salt Lake City, Utah 84112, USA.

出版信息

J Am Chem Soc. 2005 Aug 31;127(34):12131-9. doi: 10.1021/ja053050i.

DOI:10.1021/ja053050i

PMID:16117555

Abstract

The design and self-assembly of five new supramolecular complexes (a rectangle, a triangle, a hexagon, and two squares) are described. These assemblies incorporate carborane building blocks and were prepared in excellent yields (>85%). The assemblies and building blocks were characterized with multinuclear NMR spectroscopy, electrospray ionization mass spectrometry, and elemental analysis. Isotopically resolved mass spectrometry data confirm the existence of the rectangle, triangle, and hexagon, and NMR data are consistent with the formation of all five assemblies. The X-ray structures of two linear carborane building blocks, 1,12-(4-CC(C(5)H(4)N)(2)-p-C(2)B(10)H(10) (1) and 1,12-(trans-(Pt(PEt(3))(2)I)CC)(2)-p-C(2)B(10)H(10) (2), are reported: 1 is monoclinic, P2(1)/c, a = 10.6791(4) A, b = 8.0091(14) A, c = 11.6796(4) A, beta = 107.8461(15) degrees , V = 950.89(5) A(3), Z = 2; 2 is monoclinic, C2/c, a = 62.1128(10) A, b = 22.0071(3) A, c = 14.0494(2) A, beta = 89.9411(8) degrees , V = 19204.4(5) A(3), Z = 16. Crystals of the linear linker 1 exhibit close pi-pi pyridine and pyridine-B(carborane) interactions, which are discussed.

摘要

描述了五种新型超分子配合物（一个矩形、一个三角形、一个六边形和两个正方形）的设计与自组装。这些组装体包含碳硼烷构建单元，并且以极高的产率（>85%）制备而成。通过多核核磁共振光谱、电喷雾电离质谱和元素分析对组装体和构建单元进行了表征。同位素分辨质谱数据证实了矩形、三角形和六边形的存在，并且核磁共振数据与所有五种组装体的形成一致。报道了两种线性碳硼烷构建单元1,12-(4-CC(C(5)H(4)N)(2)-p-C(2)B(10)H(10)（1）和1,12-(反式-(Pt(PEt(3))(2)I)CC)(2)-p-C(2)B(10)H(10)（2）的X射线结构：1为单斜晶系，P2(1)/c，a = 10.6791(4) Å，b = 8.0091(14) Å，c = 11.6796(4) Å，β = 107.8461(15)°，V = 950.89(5) Å(3)，Z = 2；2为单斜晶系，C2/c，a = 62.1128(10) Å，b = 22.0071(3) Å，c = 14.0494(2) Å，β = 89.9411(8)°，V = 19204.4(5) Å(3)，Z = 16。对线性连接体1的晶体中存在的紧密π-π吡啶和吡啶-硼（碳硼烷）相互作用进行了讨论。