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Molecular structure and spectral properties of bis(2,6-dimethoxybenzoato)(2,2':6',2"-terpyridine)manganese(II): a five-coordinate Mn(II) complex

Strinna Erre, Liliana and Micera, Giovanni and Garribba, Eugenio and Bényei, Attila (2000) Molecular structure and spectral properties of bis(2,6-dimethoxybenzoato)(2,2':6',2"-terpyridine)manganese(II): a five-coordinate Mn(II) complex. New Journal of Chemistry, Vol. 24 (9), p. 725-728. eISSN 1369-9261. Article.

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DOI: 10.1039/b002119i

Abstract

The mixed complex formed by Mn(II), 2,6-dimethoxybenzoate (dmb) and 2,2':6',2"-terpyridine (terpy) was isolated in the solid state and characterised by single crystal X-ray diffraction, IR and EPR, and thermogravimetric analysis. The complex is fivefold co-ordinated with a geometry shifted toward the limiting form of the trigonal bipyramid. Two carboxylate groups and the central nitrogen atom of terpy occupy the equatorial plane, while the distal nitrogen atoms are in the axial positions. The normalised bite, the angle formed by distal nitrogen (Nd and Nd') atoms at the metal ion, the manganese–nitrogen distances, and the tilt angles between the pyridine rings were compared with those of other terpyridine complexes. Owing to the large dimensions of the Mn(II) ion, the distortions observed in the Nd–Mn–Nd' angles and in those between the pyridine rings are the largest so far observed with first-row transition metal ions. The metal-central nitrogen and metal-distal nitrogens distances are longer than with other metal ions.

Item Type:Article
ID Code:1481
Status:Published
Refereed:Yes
Uncontrolled Keywords:Manganese(II) complexes, crystal structure, transition metal ions
Subjects:Area 03 - Scienze chimiche > CHIM/03 Chimica generale e inorganica
Divisions:001 Università di Sassari > 01 Dipartimenti > Chimica
Publisher:Royal Society of Chemistry
eISSN:1369-9261
Deposited On:18 Aug 2009 10:05

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