biostudies-literatureGreenfield JTNCRR NIH HHSNIGMS NIH HHS3162-9https://www.ebi.ac.uk/biostudies/studies/S-EPMC3989075biostudies-literatureUnknown53(6)Solvothermal synthesis was used to create a low-dimensional iron(II) chloride formate compound, NH4FeCl2(HCOO), that exhibits interesting magnetic properties. NH4FeCl2(HCOO) crystallizes in the monoclinic space group C2/c (No. 15) with a = 7.888(1) Å, b = 11.156(2) Å, c = 6.920(2) Å, and β = 108.066(2)°. The crystal structure consists of infinite zigzag chains of distorted Fe(2+)-centered octahedra linked by μ2-Cl and syn-syn formate bridges, with interchain hydrogen bonding through NH4(+) cations holding the chains together. The unique Fe(2+) site is coordinated by four equatorial chlorides at a distance of 2.50 Å and two axial oxygens at a distance of 2.08 Å. Magnetic measurements performed on powder and oriented single-crystal samples show complex anisotropic magnetic behavior dominatedInorganic chemistryNH4FeCl2(HCOO): synthesis, structure, and magnetism of a novel low-dimensional magnetic material.PMC3989075R01 GM065440S10 RR0236561S10RR023656-01A1Kamali SChen MKovnir KIzquierdo NGreenfield JTfalseNH4FeCl2(HCOO): synthesis, structure, and magnetism of a novel low-dimensional magnetic material.Solvothermal synthesis was used to create a low-dimensional iron(II) chloride formate compound, NH4FeCl2(HCOO), that exhibits interesting magnetic properties. NH4FeCl2(HCOO) crystallizes in the monoclinic space group C2/c (No. 15) with a = 7.888(1) Å, b = 11.156(2) Å, c = 6.920(2) Å, and β = 108.066(2)°. The crystal structure consists of infinite zigzag chains of distorted Fe(2+)-centered octahedra linked by μ2-Cl and syn-syn formate bridges, with interchain hydrogen bonding through NH4(+) cations holding the chains together. The unique Fe(2+) site is coordinated by four equatorial chlorides at a distance of 2.50 Å and two axial oxygens at a distance of 2.08 Å. Magnetic measurements performed on powder and oriented single-crystal samples show complex anisotropic magnetic behavior dominated2014-01-01T00:00:00Z2014 Mar2025-04-05T10:45:41.738Z2019-03-27T01:25:10ZS-EPMC39890752457141010.1021/ic403173v