Weak Metamagnetic-like 1D Manganese(II) Complex with a Double μ1,1-Azido Bridge: A Structure and Magnetic Study
- 22 March 2006
- journal article
- research article
- Published by American Chemical Society (ACS) in Inorganic Chemistry
- Vol. 45 (8) , 3301-3306
Abstract
The azido-bridged manganese complex of formula [Mn(tptz)(μ1,1-N3)2]n [1; tptz = 2,4,6-tris(2-pyridyl)-1,3,5-triazine] has been synthesized and characterized by single-crystal X-ray diffraction analysis and a low-temperature magnetic study. The complex 1 crystallizes in the orthorhombic space group Pbcn, with a = 17.911(5) Å, b = 15.804(5) Å, c = 6.6538(18) Å, and Z = 4. The Mn atoms are coordinated by three N atoms of the tptz ligands and connected to each other by double end-on (EO) azide ligands, forming a neutral 1D chain. The adjacent 1D chains are connected by face-to-face π−π-stacking interactions and C−H···π interactions of pyridine rings of the tptz ligands, which leads to the formation of a supramolecular 2D sheet structure. Temperature- and field-dependent magnetic analyses reveal dominant intrachain ferromagnetic interactions with EO azide-bridge and weak interchain antiferromagnetic interactions with overall metamagnetic behavior having 3D magnetic ordering at 2.7 K. The critical field is approximately 80 G, at which the interlayer antiferromagnetic ground-state switches to a ferromagnetic state.Keywords
This publication has 52 references indexed in Scilit:
- One-Dimensional Azido-Bridged Chiral Metal Complexes with Ferromagnetic or Antiferromagnetic Interactions: Syntheses, Structures, and Magnetic StudiesInorganic Chemistry, 2005
- From Low-Dimensional Manganese(II) Azido Motifs to Higher-Dimensional Materials: Structure and Magnetic PropertiesInorganic Chemistry, 2005
- Spin Canting and Metamagnetism in a 3D Homometallic Molecular Material Constructed by Interpenetration of Two Kinds of Cobalt(II)‐Coordination‐Polymer SheetsAngewandte Chemie International Edition, 2005
- New Two-Dimensional Manganese(II)-Azido Polymers with Bidentate Coligands: Structure and Magnetic PropertiesChemistry of Materials, 2004
- Sol−Gel Synthesis of KVII[CrIII(CN)6]·2H2O: A Crystalline Molecule-Based Magnet with a Magnetic Ordering Temperature above 100 °CJournal of the American Chemical Society, 1999
- Magnetic Studies on μ-Azido Polynuclear Nickel(II) Compounds with the 222-tet Ligand. Crystal Structure of (μ-N3)2[Ni(222-tet)]2(BPh4)2 (222-tet = Triethylenetetramine) and EXAFS Structural Characterization of the Triangular Compounds (μ-N3)3[Ni(222-tet)]3(X)3 (X = PF6-, ClO4-)Inorganic Chemistry, 1997
- Alternating Ferromagnetic−Antiferromagnetic Interactions in a Manganese(II)−Azido One-Dimensional Compound: [Mn(bipy)(N3)2]Inorganic Chemistry, 1997
- The azido ligand: a useful tool in designing chain compounds exhibiting alternating ferro- and antiferro-magnetic interactionsChemical Communications, 1997
- A Seven-Coordinate Manganese(II) Complex Formed with a Single Tripodal Heptadentate Ligand as a New Superoxide ScavengerJournal of the American Chemical Society, 1996
- Molecular/Organic FerromagnetsScience, 1988