含两种不同有机部分的(110)层状杂化钙钛矿中的结构导向效应。

Structure-directing effects in (110)-layered hybrid perovskites containing two distinct organic moieties.

作者信息

Guo Yuan-Yuan, McNulty Jason A, Mica Natalie A, Samuel Ifor D W, Slawin Alexandra M Z, Bühl Michael, Lightfoot Philip

机构信息

School of Chemistry and EaStChem, University of St Andrews, St Andrews, Fife KY16 9ST, UK.

出版信息

Chem Commun (Camb). 2019 Aug 15;55(67):9935-9938. doi: 10.1039/c9cc04964a.

DOI:10.1039/c9cc04964a

PMID:31367707

Abstract

The hybrid perovskites (ImH)(GuH)PbBr4 and (TzH)(GuH)PbBr4 (ImH+ = imidazolium, GuH+ = guanidinium, TzH+ = 1,2,4-triazolium) both adopt (110)-oriented layer structures. However, the GuH+ cation adopts differing crystallographic sites in the two structures (intra-layer versus inter-layer); this is discussed in terms of the sizes of the organic cations and their hydrogen-bonding preferences.

摘要

杂化钙钛矿（ImH）（GuH）PbBr₄和（TzH）（GuH）PbBr₄（ImH⁺ = 咪唑鎓，GuH⁺ = 胍鎓，TzH⁺ = 1,2,4 - 三唑鎓）均采用（110）取向的层状结构。然而，GuH⁺阳离子在这两种结构中占据不同的晶体学位置（层内与层间）；这根据有机阳离子的大小及其氢键偏好进行了讨论。