𝔖 Bobbio Scriptorium
✦   LIBER   ✦

Chiral Crystal Structure of Racemic Binaphthyl Poly(ether ketone) Macrocycles

✍ Scribed by Xing Wang; Na Liu; Hui Cao; Wei Liu; Chunhai Chen; Wanjin Zhang; Yen Wei

Book ID
102497201
Publisher
John Wiley and Sons
Year
2005
Tongue
English
Weight
174 KB
Volume
26
Category
Article
ISSN
1022-1336

No coin nor oath required. For personal study only.

✦ Synopsis

Abstract

Summary: The crystal structure of rigid, hollow, racemic binaphthyl poly(ether ketone) macrocycles has been elucidated by single crystal X‐ray analysis. Multitudinal interactions were identified within the chiral space group __P__2~1~2~1~2~1~. The structural analysis revealed that this macrocyclic compound contains an elliptic chiral cavity with a size of 9.80 × 5.18 Å, which is similar to that of cyclodextrins. The knowledge about the interaction sites and the structure of the binaphthyl‐based macrocycle provides a unique opportunity to understand its molecular or chiral recognition properties.

Space‐filling representation of the single (R)‐macrocycle.

imageSpace‐filling representation of the single (R)‐macrocycle.

📜 SIMILAR VOLUMES

Crystal structure and crystallinity of p
Crystal structure and crystallinity of poly(aryl ether biphenyl ether ketone ketone)
✍ Tianxi Liu; Zhishen Mo; Shanger Wang; Hongfang Zhang; Hui Na; Zhongwen Wu 📂 Article 📅 1997 🏛 John Wiley and Sons 🌐 English ⚖ 365 KB

## Abstract The crystal structure of poly(aryl ether biphenyl ether ketone ketone) (PEDEKK) was determined to comprise a two‐chain orthorhombic unit cell with dimensions __a__ = 0.778 nm, __b__ = 0.606 nm and __c__ = 2.375 nm by using wide‐angle X‐ray diffraction (WAXD). According to the orthorhomb

The crystal structure and drawing induce
The crystal structure and drawing induced polymorphism in poly(aryl ether ketone)s, 3. Crystallization during hot-drawing of poly(ether ether ketone ketone)
✍ Shanger Wang; Tianxi Liu; Zhishen Mo; Junzuo Wang; Feng Xu; Zhongwen Wu 📂 Article 📅 1997 🏛 John Wiley and Sons 🌐 English ⚖ 407 KB

## Abstract The evolution of crystallinity and polymorphism during hot‐drawing of amorphous poly(ether ether ketone ketone) (PEEKK) as a function of strain rate, draw ratio, and temperature was investigated. In modification I, the competition of chain extension and molecular alignment is responsibl

Structure, crystallization, and properti
Structure, crystallization, and properties of poly(aryl ether ether ketone ketone)s containing meta-phenyl links and their copolymers
✍ Yang-Chuan Ke; Zhi-Jie Fang; Jun-Zuo Wang; Zhong-Wen Wu 📂 Article 📅 1996 🏛 John Wiley and Sons 🌐 English ⚖ 650 KB

## SYNOPSIS Poly(ary1 ether ether ketone ketone)s (PEEKK) containing rneta-phenyl links and their series of copolymers were synthesized and investigated by both X-ray and differential scanning calorimetry (DSC) methods. Results showed that the heat properties of this kind of copolymer depended gre