Cryst. form I (monoclinic) and form II (triclinic) of ferrocene dicarboxylic acid [Fe(5-C5H4COOH)2] have been employed in solid-gas reactions at room temp. with the gaseous bases NH3, NH2(CH3), and NH(CH3)2. The two crystal forms behave in exactly the same way in the solid-gas reaction, generating the same products, identified as the anhyd. cryst. salts [NH4]2[Fe(5-C5H4COO)2] (1), [NH3CH3]2[Fe(5-C5H4COO)2] (2), and [NH2(CH3)2]2[Fe(5-C5H4COO)2] (3). Interestingly though, all these crystals revert via vapor release exclusively to the metastable cryst. form I. Starting materials and products have been investigated by single-crystal and powder diffraction and by 13C, 15N CPMAS and 1H MAS methods.

Braga Dario, Grepioni Fabrizia, Polito Marco, Chierotti Michele R., Ellena Silvano, Gobetto Roberto. (2006). A Solid-Gas Route to Polymorph Conversion in Crystalline [FeII( 5-C5H4COOH)2]. A Diffraction and Solid-State NMR Study. ORGANOMETALLICS, 25, 4627-4633 [10.1021/om060468w].

A Solid-Gas Route to Polymorph Conversion in Crystalline [FeII( 5-C5H4COOH)2]. A Diffraction and Solid-State NMR Study.

BRAGA, DARIO;GREPIONI, FABRIZIA;POLITO, MARCO;
2006

Abstract

Cryst. form I (monoclinic) and form II (triclinic) of ferrocene dicarboxylic acid [Fe(5-C5H4COOH)2] have been employed in solid-gas reactions at room temp. with the gaseous bases NH3, NH2(CH3), and NH(CH3)2. The two crystal forms behave in exactly the same way in the solid-gas reaction, generating the same products, identified as the anhyd. cryst. salts [NH4]2[Fe(5-C5H4COO)2] (1), [NH3CH3]2[Fe(5-C5H4COO)2] (2), and [NH2(CH3)2]2[Fe(5-C5H4COO)2] (3). Interestingly though, all these crystals revert via vapor release exclusively to the metastable cryst. form I. Starting materials and products have been investigated by single-crystal and powder diffraction and by 13C, 15N CPMAS and 1H MAS methods.
2006
Braga Dario, Grepioni Fabrizia, Polito Marco, Chierotti Michele R., Ellena Silvano, Gobetto Roberto. (2006). A Solid-Gas Route to Polymorph Conversion in Crystalline [FeII( 5-C5H4COOH)2]. A Diffraction and Solid-State NMR Study. ORGANOMETALLICS, 25, 4627-4633 [10.1021/om060468w].
Braga Dario; Grepioni Fabrizia; Polito Marco; Chierotti Michele R.; Ellena Silvano; Gobetto Roberto.
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11585/29604
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