Metal Pyrazolato Complexes. Synthesis, Characterization, and X-ray Powder Diffraction Studies of Group 12 Coordination Polymers

1999 ◽  
Vol 38 (16) ◽  
pp. 3657-3664 ◽  
Author(s):  
Norberto Masciocchi ◽  
G. Attilio Ardizzoia ◽  
Angelo Maspero ◽  
Girolamo LaMonica ◽  
Angelo Sironi
2006 ◽  
Vol 45 (22) ◽  
pp. 9064-9074 ◽  
Author(s):  
Norberto Masciocchi ◽  
Simona Galli ◽  
Enrica Alberti ◽  
Angelo Sironi ◽  
Corrado Di Nicola ◽  
...  

2008 ◽  
Vol 11 (5) ◽  
pp. 502-505 ◽  
Author(s):  
G. Attilio Ardizzoia ◽  
Stefano Brenna ◽  
Fulvio Castelli ◽  
Simona Galli ◽  
Norberto Masciocchi ◽  
...  

2013 ◽  
Vol 28 (S2) ◽  
pp. S106-S125 ◽  
Author(s):  
Simona Galli ◽  
Norberto Masciocchi

Ab initio X-ray powder diffraction structural analyses from laboratory data have been widely employed in the characterization of coordination polymers not affording single crystals of suitable quality to undergo conventional structural determinations. This is particularly true for coordination polymers built upon strong ligand-to-metal bonds, as those formed by anionic, nitrogen-based heterocycles - pyrazolates, imidazolates, pyrimidinolates and more complex moieties derived therefrom. More than one hundred species belonging to this class have been structurally characterized in the last three decades, affording key, otherwise inaccessible stereochemical and supramolecolar features. This contribution summarizes our most recent experience in the XRPD structural characterization of pyrazolato-based coordination polymers, devoting a special consideration to the methodologies and tricks which allowed us to juxtapose the structural description of these materials to their physico-chemical and, above all, functional properties.


2001 ◽  
Vol 56 (10) ◽  
pp. 997-1002 ◽  
Author(s):  
Chnstian Näther ◽  
Inke Jeß ◽  
Harald Studzinski

The thermal behaviour of the three coordination polymers 2∞poly[CuX(μ-2-methylpyrazine- N,N′)] (X = Cl (I), Br (II)), and 2∞poly[{Cu2l2 (μ-pyrazine-N,N′)2 } · 2-methylpyrazine] (III) was investigated using differential thermal analysis and thermogravimetry (DTA-TG) measurements as well as temperature resolved X-ray powder diffraction in argon and in air. On heating all compounds decompose in two steps. In the first step compound I and II loose one and compound III looses two of the 2-methylpyrazine ligands to form the corresponding 2:1 compounds Cu2Cl2(2 -methylpyrazine) (IV) and 2∞poly[Cu2X2 (μ-2 -methylpyrazine-N,N′)] (X = Br (V), I (VI)). From the experiments there is no evidence for the formation of a 1:1 compound of Cul and 2-methylpyrazine as an intermediate phase during the thermal decomposition. On further heating the 2:1 compounds IV, V and VI transform directly to the corresponding copper(I) halides.


2001 ◽  
Vol 40 (27) ◽  
pp. 6983-6989 ◽  
Author(s):  
Norberto Masciocchi ◽  
G. Attilio Ardizzoia ◽  
Girolamo LaMonica ◽  
Angelo Maspero ◽  
Simona Galli ◽  
...  

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