SYNTHESIS AND STRUCTURE OF CA6MNN5 - A NEW NITRIDOMANGANATE WITH PLANAR [MNN3](6-)ANIONS

Authors
GREGORY DH BARKER MG EDWARDS PP SIDDONS DJ
Citation
Dh. Gregory et al., SYNTHESIS AND STRUCTURE OF CA6MNN5 - A NEW NITRIDOMANGANATE WITH PLANAR [MNN3](6-)ANIONS, Inorganic chemistry, 34(21), 1995, pp. 5195-5198
Citations number
23
Categorie Soggetti
Chemistry Inorganic & Nuclear
Journal title
Inorganic chemistry → ACNP
ISSN journal
00201669
Volume
34
Issue
21
Year of publication
1995
Pages
5195 - 5198
Database
ISI
SICI code
0020-1669(1995)34:21<5195:SASOC->2.0.ZU;2-#
Abstract
The new ternary nitride Ca6MnN5 has been synthesized by the solid stat e reaction of Ca3N2 with Mn4N and characterized by powder X-ray diffra ction. Ca6MnN5 crystallizes in the hexagonal space group P63/mcm (a 6. 2269(1) Angstrom, c = 12.3122(1) Angstrom, Z = 2) and is isostructural with Ca6FeN5 and Ca6GaN5. Manganese(III) forms trigonal planar [MnN3] (6-) units analogous to carbonate anions, which lie in planes parallel to the c axis, sandwiched between layers of Ca-N polyhedra. Calcium i s coordinated to five nitrogens in a distorted square pyramidal geomet ry. Interestingly, at room temperature the material is diamagnetic.