TY - JOUR

T1 - Anionic octahedral halide molybdenum and tungsten clusters with pyrazolate ligands

AU - Kozlova, Ksenia S.

AU - Berezin, Alexey S.

AU - Ivanov, Anton A.

AU - Shestopalov, Michael A.

N1 - Сведения о финансировании Финансирующий спонсор Номер финансирования Ministry of Education and Science of the Russian Federation Russian Science Foundation 19-73-20109

PY - 2025/4/1

Y1 - 2025/4/1

N2 - In this study, we present a convenient and accessible synthesis of [M6X8(OCH3)6]2− clusters from [M6X8X6]2− (M = Mo, W; X = Br, I) using methanol and sodium hydroxide, without the use of absolute solvents or sodium methylate. The substitution of terminal methylate ligands in the clusters by pyrazolate ligands was conducted using a reaction in the melt of the organic ligand. The formation of anionic [M6X8(pz)6]2− (pz = pyrazolate) complexes was confirmed by both single crystal X-ray diffraction analysis and 1H NMR spectroscopy in solution. The complexes exhibited broadband emission in solid state with emission maxima ranging from 600 to 700 nm (depending on the cluster core) with quantum yields of approximately 7 %.

AB - In this study, we present a convenient and accessible synthesis of [M6X8(OCH3)6]2− clusters from [M6X8X6]2− (M = Mo, W; X = Br, I) using methanol and sodium hydroxide, without the use of absolute solvents or sodium methylate. The substitution of terminal methylate ligands in the clusters by pyrazolate ligands was conducted using a reaction in the melt of the organic ligand. The formation of anionic [M6X8(pz)6]2− (pz = pyrazolate) complexes was confirmed by both single crystal X-ray diffraction analysis and 1H NMR spectroscopy in solution. The complexes exhibited broadband emission in solid state with emission maxima ranging from 600 to 700 nm (depending on the cluster core) with quantum yields of approximately 7 %.

KW - Cluster complex

KW - Crystal structure

KW - Luminescence

KW - Molybdenum

KW - Tungsten

UR - https://www.mendeley.com/catalogue/f0d07151-2ce2-3724-bba0-f3dd47366e04/

UR - https://www.scopus.com/record/display.uri?eid=2-s2.0-85213085013&origin=inward&txGid=93f94f7706428b8abb3b74e857d7e4b8

U2 - 10.1016/j.ica.2024.122504

DO - 10.1016/j.ica.2024.122504

M3 - Article

VL - 578

JO - Inorganica Chimica Acta

JF - Inorganica Chimica Acta

SN - 0020-1693

M1 - 122504

ER -