ISSN:
0044-2313
Keywords:
Fluorometallates
;
crystal structure
;
hydrogen bonds
;
phenylenediammonium salts
;
Chemistry
;
Inorganic Chemistry
Source:
Wiley InterScience Backfile Collection 1832-2000
Topics:
Chemistry and Pharmacology
Description / Table of Contents:
Hydrogen Bonds in o- and m-Phenylenediammonium Aquapentafluoro Metallates(III) (MIII = Al, Cr, Fe)m- and o-Phenylenediammonium-[MIIIF5(H2O)] compounds of Al, Cr and Fe were synthesized and characterized by X-ray single crystal structure analysis. All structures are described in the space group P212121 (Z = 4). m-Ph(NH3)22+ (Ph(NH3)22+ = phenylenediammonium) compounds: Al: a = 6.489(2), b = 7.943(2), c = 18.204(2) Å, R/wR = 0.084/0.050 for 1 533 reflections; Cr: a = 6.571(2), b = 8.006(2), c = 18.456(3) Å, R/wR = 0.050/0.040 for 1 571 reflections; Fe: a = 6.608(2), b = 8.052(2), c = 18.424(4) Å, R/wR = 0.042/0.034 for 1 947 reflections. o-Ph(NH3)22+ compounds: Al: a = 6.580(2), b = 7.891(2), c = 18.319(5) Å, R/wR = 0.050/0.045 for 2 370 reflections; Cr: a = 6.642(2), b = 7.954(2), c = 18.484(4) Å, R/wR = 0.065/0.043 for 2 041 reflections; Fe: a = 6.693(2), b = 7.995(4), c = 18.529(7) Å, R/wR = 0.035/0.033 for 2 651 reflections. Isolated distorted octahedral [MIIIF5(H2O)]2- anions are connected by double O—H⃛F hydrogen bonds of alternating strength to form chains in the b direction. Those chains, packed in a pseudohexagonal way, are further linked by the ammonium functions of the phenylenediammonium cations to a 3 D hydrogen bond network.
Notes:
m- und o-Phenylendiammonium-[MIIIF5(H2O)]-Verbindungen von Al, Cr und Fe wurden synthetisiert und durch Röntgenstrukturbestimmungen an Einkristallen charakterisiert. Die Strukturen werden alle in der Raumgruppe P212121 (Z = 4) beschrieben. m-Ph(NH3)22+-Verbindungen (Ph(NH3)22+ = Phenylendiammonium): Al: a = 6,489(2), b = 7,943(2), c = 18,204(2) Å, R/wR = 0,084/0,050 für 1 533 Reflexe; Cr: a = 6,571(2), b = 8,006(2), c = 18,456(3) Å, R/wR = 0,050/0,040 für 1 571 Reflexe; Fe: a = 6,608(2), b = 8,052(2), c = 18,424(4) Å, R/wR = 0,042/0,034 für 1 947 Reflexe. o-Ph(NH3)22+-Verbindungen: Al: a = 6,580(2), b = 7,891(2), c = 18,319(5) Å, R/wR = 0,050/0,045 für 2 370 Reflexe; Cr: a = 6,642(2), b = 7,954(2), c = 18,484(4) Å, R/wR = 0,065/0,043 für 2 041 Reflexe; Fe: a = 6,693(2), b = 7,995(4), c = 18,529(7) Å, R/wR = 0,035/0,033 für 2 651 Reflexe. Isolierte verzerrt oktaedrische [MIIIF5(H2O)]2- Anionen werden durch doppelte O—H…F H-Brückenbindungen alternierender Stärke zu Ketten in b-Richtung verknüpft.Diese pseudohexagonal gepackten Ketten werden durch die Ammoniumfunktionen der Phenylendiammonium-Kationen über weitere H-Brücken dreidimensional vernetzt.
Additional Material:
3 Ill.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1002/zaac.19936190726
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