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545 Aktuelle Fachpublikationen zum Thema Osmium

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Anticancer activity of complexes of the third row transition metals, rhenium, osmium, and iridium

20.06.2018 | Chilaluck C. Konkankit; Sierra C. Marker; Kevin M. Knopf; Justin J. Wilson, Dalton Transactions, 2018

The clinical success of the platinum-based chemotherapeutic agents has prompted the investigation of coordination and organometallic complexes of alternative metal centers for use as anticancer agents. Among these alternatives, the third row transition metal neighbors of platinum on the periodic ...

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Sr5Os3O13: a mixed valence osmium(V,VI) layered perovskite variant exhibiting temperature dependent charge distribution

29.05.2018 | Shrikant A. Mohitkar; Jürgen Nuss; Henning A. Höppe; Claudia Felser; Martin Jansen, Dalton Transactions, 2018

New Sr5Os3O13, as synthesized from binary constituents, exhibits several uncommon features. Its crystal structure is dominated by quasi-2D poly-oxoanions that correspond to unprecedented cutouts of the perovskite type of structure, where corner sharing (OsO6) octahedra aggregate to form terraced ...

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Exploiting the benefit of S0 → T1 excitation in triplet–triplet annihilation upconversion to attain large anti-stokes shifts: tuning the triplet state lifetime of a tris(2,2′-bipyridine) osmium(II) complex

26.05.2018 | Dongyi Liu; Yingjie Zhao; Zhijia Wang; Kejing Xu; Jianzhang Zhao, Dalton Transactions, 2018

Os(ii) complexes are particularly interesting for triplet–triplet annihilation (TTA) upconversion, due to the strong direct S0 → T1 photoexcitation, as in this way, energy loss is minimized and large anti-Stokes shift can be achieved for TTA upconversion. However, Os(bpy)3 has an intrinsic short ...

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PNP-Pincer Complexes of Osmium: Comparison with Isoelectronic (PCP)Ir and (PNP)Ir+ Units

18.01.2018 | Nicholas Lease; Elizabeth M. Pelczar; Tian Zhou; Santanu Malakar; Thomas J. Emge; Faraj Hasanayn; Karsten Krogh-Jesp ..., Organometallics, 2018

Several complexes of (tBu4PNP)Os (1) (tBu4PNP = C5NH3-2,6-(CH2PtBu2)2) are reported. 1 is isoelectronic with (tBu4PCP)Ir (2), which has played a leading role in homogeneous catalytic alkane dehydrogenation; the (tBu4PNP)Os complexes were investigated in this context. (tBu4PNP)OsH4 (1-H4) is ...

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Water-soluble transition metal complexes of Ruthenium(II), Osmium(II), Rhodium (III) and Iridium (III) with chelating N-heterocyclic carbene ligands in hydrogenation and transfer hydrogenation catalysis

16.01.2018 | Esther Bayon Castanon; Marlene Kaposi; Robert M. Reich; Fritz Elmar Kühn, Dalton Transactions, 2018

The synthesis of novel Ru(II), Os(II), Rh(III) and Ir(III) mono N-heterocyclic carbene (NHC) complexes with a pyridine substituent is reported. Reaction of the imidalozium salts bearing N-alkyl and sulfonated N-alkyl substituents with Ag2O leads to the formation of the corresponding Ag(I) ...

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Water-soluble transition metal complexes of Ruthenium(II), Osmium(II), Rhodium (III) and Iridium (III) with chelating N-heterocyclic carbene ligands in hydrogenation and transfer hydrogenation catalysis

16.01.2018 | Esther Bayon Castanon; Marlene Kaposi; Robert M. Reich; Fritz Elmar Kühn, Dalton Transactions, 2018

The synthesis of novel Ru(II), Os(II), Rh(III) and Ir(III) mono N-heterocyclic carbene (NHC) complexes with a pyridine substituent is reported. Reaction of the imidalozium salts bearing N-alkyl and sulfonated N-alkyl substituents with Ag2O leads to the formation of the corresponding Ag(I) ...

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Alkyne activation and polyhedral reorganization in benzothiazolate-capped osmium clusters on reaction with diethyl acetylenedicarboxylate (DEAD) and ethyl propiolate

15.01.2018 | Kh. Mahid Uddin; Md. Arshad H. Chowdhury; Md. Kamal Hossain; Shishir Ghosh; Derek A. Tocher; Michael G. Richmond; Sh ..., Dalton Transactions, 2018

The reactivity of the face-capped benzothiazolate clusters HOs3(CO)9[μ3-C7H3(R)NS] (1a, R = H; 1b, R = 2-CH3) with alkynes has been investigated. 1a reacts with DEAD at 67 °C to furnish the isomeric alkenyl clusters Os3(CO)9(μ-C7H4NS)(μ3-EtO2CCCHCO2Et) (2a and 3a). X-ray crystallographic analyses ...

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Alkyne activation and polyhedral reorganization in benzothiazolate-capped osmium clusters on reaction with diethyl acetylenedicarboxylate (DEAD) and ethyl propiolate

15.01.2018 | Kh. Mahid Uddin; Md. Arshad H. Chowdhury; Md. Kamal Hossain; Shishir Ghosh; Derek A. Tocher; Michael G. Richmond; Sh ..., Dalton Transactions, 2018

The reactivity of the face-capped benzothiazolate clusters HOs3(CO)9[μ3-C7H3(R)NS] (1a, R = H; 1b, R = 2-CH3) with alkynes has been investigated. 1a reacts with DEAD at 67 °C to furnish the isomeric alkenyl clusters Os3(CO)9(μ-C7H4NS)(μ3-EtO2CCCHCO2Et) (2a and 3a). X-ray crystallographic analyses ...

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A NIR phosphorescent osmium(II) complex as a lysosome tracking reagent and photodynamic therapeutic agent

15.01.2018 | Pingyu Zhang; Yi Wang; Kangqiang Qiu; Zhiqian Zhao; Rentao Hu; Chuanxin He; Qianling Zhang; Hui Chao, Chemical Communication, 2018

A novel near infrared (NIR) phosphorescent osmium complex (Os1) was developed for lysosome tracking and photodynamic therapy. Owing to its NIR photophysical properties, cellular imaging ability and phototoxicity, it has advantages over its ruthenium analogue (Ru1).

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A NIR phosphorescent osmium(II) complex as a lysosome tracking reagent and photodynamic therapeutic agent

15.01.2018 | Pingyu Zhang; Yi Wang; Kangqiang Qiu; Zhiqian Zhao; Rentao Hu; Chuanxin He; Qianling Zhang; Hui Chao, Chemical Communication, 2018

A novel near infrared (NIR) phosphorescent osmium complex (Os1) was developed for lysosome tracking and photodynamic therapy. Owing to its NIR photophysical properties, cellular imaging ability and phototoxicity, it has advantages over its ruthenium analogue (Ru1).

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