TY - JOUR
T1 - Binuclear sulfide niobium clusters coordinated by diimine ligands
T2 - Synthesis, structure, photocatalytic activity and optical limiting properties
AU - Rogachev, Alexander V.
AU - Gushchin, Artem L.
AU - Abramov, Pavel A.
AU - Kozlova, Ekaterina A.
AU - Vicent, Cristian
AU - Piryazev, Dmitry
AU - Barlow, Adam
AU - Samoc, Marek
AU - Humphrey, Mark G.
AU - Llusar, Rosa
AU - Fedin, Vladimir P.
AU - Sokolov, Maxim N.
N1 - Publisher Copyright:
© 2015 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.
PY - 2015/6/1
Y1 - 2015/6/1
N2 - Substitution reactions of binuclear niobium cluster anion [Nb2S4(NCS)8]4- with different types of pyridine-based diimine ligands have been carried out. In the case of 2,2′-bipyridine (bipy) and its derivatives, only monosubstituted complexes [Nb2S4(NCS)6L]2- have been isolated. In the case of 1,10-phenanthroline and 2-(2-pyridyl)benzimidazole (Hpbz), both mono- and disubstituted complexes, [Nb2S4(NCS)6L]2- and [Nb2S4(NCS)4L2], respectively, have been obtained. Crystal structures of (Et4N)2[Nb2S4(NCS)6(bipy)]·0.5bipy·0.7CH3CN and [Nb2S4(pbmz)2(NCS)4]·5DMF·0.8H2O have been determined. All compounds have been characterized by NMR, ESI mass spectrometry, IR, UV/Vis spectroscopy, and CV. TiO2 nanoparticles modified with (Et4N)2[Nb2S4(NCS)6(bipy)] show moderate photocatalytic activity in the reaction of H2 generation from water in the presence of Na2S/Na2SO3 as a sacrificial electron donor system. The linear and nonlinear optical properties of the complexes with bipyridine ligands have been studied; the complexes function as broad-band optical limiters. A series of complexes, [Nb2S4(NCS)6L]2- and [Nb2S4(NCS)4L2], where L is a bipyridine, phenanthroline or 2-(2-pyridyl)benzimidazole has been prepared. TiO2 nanoparticles modified with (Et4N)2[Nb2S4(NCS)6(bipy)] exhibit photocatalytic activity for H2 generation from water in the presence of a sacrificial electron-donor system. The complexes function as optical limiters.
AB - Substitution reactions of binuclear niobium cluster anion [Nb2S4(NCS)8]4- with different types of pyridine-based diimine ligands have been carried out. In the case of 2,2′-bipyridine (bipy) and its derivatives, only monosubstituted complexes [Nb2S4(NCS)6L]2- have been isolated. In the case of 1,10-phenanthroline and 2-(2-pyridyl)benzimidazole (Hpbz), both mono- and disubstituted complexes, [Nb2S4(NCS)6L]2- and [Nb2S4(NCS)4L2], respectively, have been obtained. Crystal structures of (Et4N)2[Nb2S4(NCS)6(bipy)]·0.5bipy·0.7CH3CN and [Nb2S4(pbmz)2(NCS)4]·5DMF·0.8H2O have been determined. All compounds have been characterized by NMR, ESI mass spectrometry, IR, UV/Vis spectroscopy, and CV. TiO2 nanoparticles modified with (Et4N)2[Nb2S4(NCS)6(bipy)] show moderate photocatalytic activity in the reaction of H2 generation from water in the presence of Na2S/Na2SO3 as a sacrificial electron donor system. The linear and nonlinear optical properties of the complexes with bipyridine ligands have been studied; the complexes function as broad-band optical limiters. A series of complexes, [Nb2S4(NCS)6L]2- and [Nb2S4(NCS)4L2], where L is a bipyridine, phenanthroline or 2-(2-pyridyl)benzimidazole has been prepared. TiO2 nanoparticles modified with (Et4N)2[Nb2S4(NCS)6(bipy)] exhibit photocatalytic activity for H2 generation from water in the presence of a sacrificial electron-donor system. The complexes function as optical limiters.
KW - Chalcogens
KW - Clusters compounds
KW - Niobium
KW - Photocatalysis
KW - Structure elucidation
UR - http://www.scopus.com/inward/record.url?scp=84931264547&partnerID=8YFLogxK
U2 - 10.1002/ejic.201500319
DO - 10.1002/ejic.201500319
M3 - Article
AN - SCOPUS:84931264547
SN - 1434-1948
VL - 2015
SP - 2865
EP - 2874
JO - European Journal of Inorganic Chemistry
JF - European Journal of Inorganic Chemistry
IS - 17
ER -