Hydrogen Bonding Network of 4-Amidiniumpyridine Acetate and Pt<sup>II</sup>bis(triphenylphosphine) Complexes with 4-Amidinepyridine
作者:Luca Rigamonti、Stefano Carlino、Carlo Castellano、Francesco Demartin、Alessandro Pasini
DOI:10.1002/zaac.201200256
日期:2012.10.19
Abstract. The X-ray structures of 4-amidiniumpyridine acetate,( 1· H)AcO, and of cis -[Pt( 1 ) 2 (PPh 3 ) 2 ](NO 3 ) 2 ( 2 ), as well as their IRspectra, reveal intramolecular hydrogen bonding, which held togetherthe cations and the anions. The IR spectroscopic data suggest that this Introduction The amidine moiety and the amidinium cation can form hy-drogen bonds with a host of hydrogen acceptors
摘要。4-脒吡啶乙酸盐(1·H)AcO和顺式-[Pt(1)2(PPh3)2](NO3)2(2)的X射线结构及其红外光谱揭示了分子内氢键,将阳离子和阴离子结合在一起。IR 光谱数据表明该引言脒部分和脒阳离子可以与许多氢受体形成氢键。后阳离子特别容易通过其 NH 2+ 基团形成这种键,这种行为在化学和生物化学的各个方面都有许多重要的影响。[1,2] 例如,精氨酸的质子化脒部分与羧酸盐的氢键相互作用发生在许多生化过程中,例如蛋白质构象、[3] 底物结合 [2,4] 和取向,[5] 或氢键介导的电子转移反应。[6,7] 除了羧酸盐外,[8,9,10] 脒阳离子可以与许多其他氢受体氢键合,例如 [PbBr 4