Two New One-Dimensional Compounds with End-to-End Dicyanamide as a Bridging Ligand: Syntheses and Structural Characterization of trans-[Mn(4-bzpy)2(N(CN)2)2]n and cis-[Mn(Bpy)(N(CN)2)2]n, (4-bzpy = 4-benzoylpyridine; bpy = 2,2‘-bipyridyl)
- 25 March 2000
- journal article
- research article
- Published by American Chemical Society (ACS) in Inorganic Chemistry
- Vol. 39 (8), 1668-1673
- https://doi.org/10.1021/ic990905h
Abstract
Two new one-dimensional compounds, trans-[Mn(4-bzpy)2(N(CN)2)2]n (1) and cis-[Mn(bpy)(N(CN)2)2]n (2), have been synthesized and studied from a magnetic point of view (4-bzpy = 4-benzoylpyridine; bpy = 2,2‘-bipyridyl). The crystal structures of 1 and 2 have been solved. Compound 1 crystallizes in the monoclinic system, P21/n group, a = 6.374(2) Å, b = 7.584(2) Å, c = 26.766(5) Å, β = 91.87°, and Z = 2, whereas compound 2 crystallizes in the monoclinic system, C2/c group, a = 6.707(2) Å, b = 17.188(5) Å, c = 13.096(5) Å, β = 90.54°, and Z = 4. The two compounds consist of chains with double μ1,5-dicyanamide bridges between neighboring manganese(II) atoms. The weak antiferromagnetic coupling found for the two compounds (J = −0.3 cm-1 for 1 and −0.4 cm-1 for 2) has been studied by MO analysis, and the superexchange pathway through the μ1,5-(NCNCN-) bridge has been compared with the shorter μ1,3-(NNN-).Keywords
This publication has 18 references indexed in Scilit:
- Spontaneous Magnetization in the M[N(CN)2]2 (M = Cr, Mn) Weak FerromagnetsInorganic Chemistry, 1999
- Novel Infinite Three-Dimensional Networks with Highly Conjugated Polynitrile Ligands: Syntheses, Crystal Structures, and Magnetic Properties of [Cu{C[C(CN)2]3}(H2O)2]n and [Cu{C[C(CN)2]3}(en)]n (en=NH2CH2CH2NH2)Angewandte Chemie International Edition, 1999
- Structural isomers of M(dca)2 molecule-based magnets. Crystal structure of tetrahedrally coordinated sheet-like β-Zn(dca)2 and β-Co/Zn(dca)2, and the octahedrally coordinated rutile-like α-Co(dca)2, where dca– = dicyanamide, N(CN)2−, and magnetism of β-Co(dca)2Chemical Communications, 1999
- Structure and Magnetic Ordering of MII[N(CN)2]2 (M = Co, Ni)Chemistry of Materials, 1998
- Synthesis and Rutilelike Structure of [Cd(tcm)(hmt)(H2O)](tcm) (tcm- = Tricyanomethanide, C(CN)3-; hmt = Hexamethylenetetramine)Inorganic Chemistry, 1998
- Darstellung und spektroskopische Charakterisierung von Kupfer(II)- und Nickel(II)-tricyanmethanid-Komplexen mit Imidazol-Derivaten - Kristallstruktur von [Cu{C(CN)3}2(2-meiz)2]Zeitschrift für anorganische und allgemeine Chemie, 1998
- Interpenetrating three-dimensional rutile-like frameworks. Crystal structure and magnetic properties of MnII[C(CN)3]2Chemical Communications, 1998
- Structure and molecular magnetism of the rutile-related compounds M(dca)2, M = CoII, NiII, CuII, dca = dicyanamide, N(CN)2−Chemical Communications, 1998
- Hard magnets based on transition metal complexes with the dicyanamide anion, {N(CN)2}-,New Journal of Chemistry, 1998
- X-ray crystallographic and physical investigation of tricyanomethanide and dicyanamide complexes of cobalt(II) with imidazole and its methyl derivativesTransition Metal Chemistry, 1995