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Synthesis and Structure of a Bipyridyldicarboxylate Connected Neodyminum Organic Framework
Author(s) -
Schoknecht Birk,
Kempe Rhett
Publication year - 2004
Publication title -
zeitschrift für anorganische und allgemeine chemie
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.354
H-Index - 66
eISSN - 1521-3749
pISSN - 0044-2313
DOI - 10.1002/zaac.200400095
Subject(s) - lanthanide , neodymium , crystallography , hydrothermal synthesis , coordination polymer , metal organic framework , crystal structure , atom (system on chip) , chemistry , 4,4' bipyridine , materials science , hydrothermal circulation , molecule , ion , hydrogen bond , organic chemistry , physics , chemical engineering , computer science , laser , adsorption , optics , engineering , embedded system
Abstract The porous neodymium coordination polymer {[L 3 Nd 2 (H 2 O) 4 ] (LH 2 = 2,2′‐bipyridine‐5,5′‐dicarboxylic acid)} ( 1 ) was prepared via a hydrothermal synthesis approach starting from Nd(NO 3 ) 3 ·6H 2 O and 2,2′‐bipyridine‐5,5′‐dicarboxylic acid in a one to one mixture of ethanol and water at 160°C. The product was characterized by single crystal X‐ray diffraction, TGA and elemental analysis. Space group: P $\bar 1$ , a: 6.0294(4), b: 10.9061(6), c: 13.8392(9) Å, α: 101.486(7), β: 93.799(8)°, γ: 100.933(7)°, R1 [> 2σ (I)] = 0.0147, wR2 (all data) = 0.0328. The structure determination revealed 1 to be a 3‐dimensional network with eight‐coordinated lanthanide centres acting as 5‐connectors and two types of bipyridyldicarboxylate cross‐linkers, as 3‐ and a 4‐connectors. After the loss of water – two per neodymium atom‐channels are formed with a channel diameter of 4.82 Å [atom to atom distances (Nd‐O)].

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