%0 Journal Article %1 Woehlert2013 %A Wöhlert, Susanne %A Fink, Lothar %A Schmidt, Martin U. %A Näther, Christian %D 2013 %I WILEY-VCH Verlag %J Z. anorg. allg. Chem. %K 2d-coordination-polymers magnetic-properties manganeseii-thiocyanate nickelii-thiocyanate thermal-properties %N 12-13 %P 2186--2194 %R 10.1002/zaac.201300222 %T Synthesis and Characterization of New 2D Coordination Polymers based on Mn(NCS)2 and Ni(NCS)2 with 1, 2-Bis(4-pyridyl)-ethane as Co-Ligand %U http://dx.doi.org/10.1002/zaac.201300222 %V 639 %X Reaction of manganese(II) and nickel(II) thiocyanate with 1, 2-bis(4-pyridyl)-ethane (bpa) leads to the formation of literature known compounds of composition M(NCS)2(bpa)2 with M = Mn (1-Mn) and Ni (1-Ni). On heating 1-Mn and 1-Ni transform into new compounds of composition M(NCS)2(bpa) with M = Mn (2-Mn) and Ni (2-Ni). These compounds can also be prepared in solution. In both synthetic routes only microcrystalline powders are obtained with crystals too small for single-crystal X-ray diffraction. Therefore, the structures of both compounds were solved and refined from X-ray powder data. In the crystal structure the transition metal cations are coordinated by two bpa co-ligands and four thiocyanato anions within slightly distorted octahedra. The metal cations are linked by μ-1, 3-bridging thiocyanato anions into chains, that are further connected into layers by the bpa ligands. Magnetic measurements on 2-Ni shows only Curie-Weiss paramagnetism. In contrast, for 2-Mn an antiferromagnetic ordering is observed but on further cooling the susceptibility curves increase indicating for canted antiferromagnetism. Further measurements prove that the increase at lower temperatures can be traced back to a small contamination with 1-Mn, which is always present independent if this compound is prepared by thermal decomposition or by crystallization from solution. In the course of the crystallization experiments a few single crystals of two additional compounds of composition Mn(NCS)2(bpa)(H2O)2 (3-Mn) and Mn(NCS)22(bpa)3(CH3OH)2 (4-Mn) were accidently obtained and characterized by single crystal structure analysis. The results of the magnetic measurements are compared with those for related compounds with different neutral N-donor ligands.

@article{Woehlert2013, abstract = {{Reaction of manganese(II) and nickel(II) thiocyanate with 1, 2-bis(4-pyridyl)-ethane (bpa) leads to the formation of literature known compounds of composition M(NCS)2(bpa)2 with M = Mn (1-Mn) and Ni (1-Ni). On heating 1-Mn and 1-Ni transform into new compounds of composition M(NCS)2(bpa) with M = Mn (2-Mn) and Ni (2-Ni). These compounds can also be prepared in solution. In both synthetic routes only microcrystalline powders are obtained with crystals too small for single-crystal X-ray diffraction. Therefore, the structures of both compounds were solved and refined from X-ray powder data. In the crystal structure the transition metal cations are coordinated by two bpa co-ligands and four thiocyanato anions within slightly distorted octahedra. The metal cations are linked by μ-1, 3-bridging thiocyanato anions into chains, that are further connected into layers by the bpa ligands. Magnetic measurements on 2-Ni shows only Curie-Weiss paramagnetism. In contrast, for 2-Mn an antiferromagnetic ordering is observed but on further cooling the susceptibility curves increase indicating for canted antiferromagnetism. Further measurements prove that the increase at lower temperatures can be traced back to a small contamination with 1-Mn, which is always present independent if this compound is prepared by thermal decomposition or by crystallization from solution. In the course of the crystallization experiments a few single crystals of two additional compounds of composition Mn(NCS)2(bpa)(H2O)2 (3-Mn) and [Mn(NCS)2]2(bpa)3(CH3OH)2 (4-Mn) were accidently obtained and characterized by single crystal structure analysis. The results of the magnetic measurements are compared with those for related compounds with different neutral N-donor ligands.}}, added-at = {2019-03-11T21:00:05.000+0100}, author = {W\"{o}hlert, Susanne and Fink, Lothar and Schmidt, Martin U. and N\"{a}ther, Christian}, biburl = {https://www.bibsonomy.org/bibtex/270a7c1dab1ed53ef1dec798c7b71b87d/fairybasslet}, citeulike-article-id = {12743050}, citeulike-linkout-0 = {http://dx.doi.org/10.1002/zaac.201300222}, day = 1, doi = {10.1002/zaac.201300222}, interhash = {1ef7b795d7b4ee2800bcf17844cca0c2}, intrahash = {70a7c1dab1ed53ef1dec798c7b71b87d}, journal = {Z. anorg. allg. Chem.}, keywords = {2d-coordination-polymers magnetic-properties manganeseii-thiocyanate nickelii-thiocyanate thermal-properties}, month = oct, number = {12-13}, pages = {2186--2194}, posted-at = {2013-11-01 18:53:32}, priority = {2}, publisher = {WILEY-VCH Verlag}, timestamp = {2019-03-11T21:06:37.000+0100}, title = {{Synthesis and Characterization of New 2D Coordination Polymers based on Mn(NCS)2 and Ni(NCS)2 with 1, 2-Bis(4-pyridyl)-ethane as Co-Ligand}}, url = {http://dx.doi.org/10.1002/zaac.201300222}, volume = 639, year = 2013 }