Weak Ferromagnetic Behavior of the Manganese Alkylphosphonate Hydrates MnCnH2n+1PO3 · H2O, n = 1-4

Carling, Simon G.; Day, Peter; Visser, Dick; Kremer, R. K.

doi:10.1006/jssc.1993.1269

Cited by 87 publications

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“…An alternative fitting procedure with a Fisher law [20] (for 1D chains) modified to introduce 2+ phosphonates (alkyl or phenyl). [21,22] The isotypic cobalt compound presents a moment of 3.53 µ B and T N = 6.5 K, θ = -13 K. The ratio θ/T N = 2 confirms the isotypic character of the structures. The value of 3.53 µ B corresponds to fully quenched value of the L moment, which is classical for Co 2+ .…”

Section: Resultsmentioning

confidence: 56%

meta‐Phosphonobenzoic Acid: A Rigid Heterobifunctional Precursor for the Design of Hybrid Materials

et al. 2008

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Rigid meta-phosphonobenzoic acid 2 possesses two functional groups (phosphonic acid and carboxylic acid) both having the aptitude to associate with a metallic precursor to form hybrid materials. The hydrothermal reactions of compound 2 with MnCl 2 ·4H 2 O or Co(NO 3 ) 2 ·6H 2 O produce, respectively, the isostructural layered materials M(H 2 O)-(PO 3 C 6 H 4 CO 2 H) (3, M = Mn; 4, M = Co) characterized by the presence of the free carboxylic acid groups in the interlayer space (space group P2 1 /n). The reaction of Zn(CH 3 COO) 2 · 2H 2 O with 2 produces two different materials depending on the pH of the reaction media. At low pH (pH Ͻ 4.1), the iso-

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Section: Resultsmentioning

confidence: 56%

meta‐Phosphonobenzoic Acid: A Rigid Heterobifunctional Precursor for the Design of Hybrid Materials

et al. 2008

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“…Previous studies (22) have identi"ed the ordering in Mn(O PC H ) ) H O as a transition to a canted antiferromagnetic state in analogy to other manganese organophosphonates (15). The magnetic moments assume a noncollinear orientation that produces a weak ferromagnetic moment that lies within the plane of the manganese ions.…”

Section: Resultsmentioning

confidence: 97%

Layered Mixed-Metal Phenylphosphonates, MnxCo1−x(O3PC6H5)·H2O: Structure and Magnetic Properties

Culp¹,

Fanucci²,

Watson³

et al. 2001

Journal of Solid State Chemistry

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“…This appears to be a common structural feature in other recent molecule-based examples of spin-canting. [12,14,15] Self-penetration of the polymeric network does not appear to lead to any interactions between chains.…”

Section: Resultsmentioning

confidence: 99%

Self-Penetration—A Structural Compromise between Single Networks and Interpenetration: Magnetic Properties and Crystal Structures of [Mn(dca)2(H2O)] and [M(dca)(tcm)], M=Co, Ni, Cu, dca=Dicyanamide, N(CN)2−, tcm=Tricyanomethanide, C(CN)3−

et al. 2000

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The three-dimensional coordination polymers [Mn(dca)2(H2O)] (1) and [M(dca)(tcm)], M =Co (2), Ni (3), Cu (4), dca =dicyanamide, N(CN)2-, tcm = tricyanomethanide, C(CN)3-, have isomorphous structures. In 1 half the dca ligands coordinate directly (through all three nitrogen atoms) to three Mn atoms (all metal atoms are six-coordinate), while the other half coordinate to two Mn atoms (through the nitrile nitrogens) and hydrogen bond to water molecules coordinated to a third Mn atom (through the amide nitrogen). This dca. H2O structural moiety is disordered over a mirror plane, and is replaced by the structurally equivalent tcm ligand in compounds 2-4. The resulting structures display a new self-penetrating 3,6-connected (2:1) network topology that can be related to, but is different from, the rutile net. The self-penetrating [M(dca)(tcm)] network can be viewed as a structural compromise between the two interpenetrating rutile-like networks of [M(tcm)2] and the single rutile-like network of alpha-[M(dca)2]. The temperature and field dependence of the DC and AC magnetic susceptibilities and magnetisations has been measured for complexes 1-4. Compounds 1-3 exhibit long-range magnetic order with critical temperatures of 6.3 K for 1, 3.5 K for 2 and 8.0 K for 3. The Cu11 compound 4 does not order and is essentially a paramagnet. Hysteresis measurements of coercive field and remnant magnetisation show that 1, 2 and 3 are soft magnets, 1 being a canted-spin antiferromagnet (weak ferromagnet), while 2 and 3 are ferromagnets that display some unusual features in their high-field magnetisation isotherms in comparison to their related alpha-[M(dca)2] phases.

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Weak Ferromagnetic Behavior of the Manganese Alkylphosphonate Hydrates MnCnH2n+1PO3 · H2O, n = 1-4

Cited by 87 publications

References 0 publications

meta‐Phosphonobenzoic Acid: A Rigid Heterobifunctional Precursor for the Design of Hybrid Materials

meta‐Phosphonobenzoic Acid: A Rigid Heterobifunctional Precursor for the Design of Hybrid Materials

Layered Mixed-Metal Phenylphosphonates, MnxCo1−x(O3PC6H5)·H2O: Structure and Magnetic Properties

Self-Penetration—A Structural Compromise between Single Networks and Interpenetration: Magnetic Properties and Crystal Structures of [Mn(dca)2(H2O)] and [M(dca)(tcm)], M=Co, Ni, Cu, dca=Dicyanamide, N(CN)2−, tcm=Tricyanomethanide, C(CN)3−

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