Beata Nowicka

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Back Cover: Room‐Temperature Bistability in a Ni–Fe Chain: Electron Transfer Controlled by Temperature, Pressure, Light, and Humidity (Angew. Chem. Int. Ed. 5/2021)

Mateusz Reczyński, Dawid Pinkowicz, Koji Nakabayashi, Christian Näther, more

Angewandte Chemie International Edition > 60 > 5 > 2708 - 2708

Stimuli‐responsive materials are important for the construction of molecular switches or sensors. In their Research Article on page 2330, Mateusz Reczyński, Shin‐ichi Ohkoshi, Beata Nowicka, and co‐workers present room‐temperature bistability in a CN‐bridged Ni–Fe coordination chain, which exhibits multiresponsive behavior with electron‐transfer transitions induced by temperature, light, pressure,...

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Room‐Temperature Bistability in a Ni–Fe Chain: Electron Transfer Controlled by Temperature, Pressure, Light, and Humidity

Mateusz Reczyński, Dawid Pinkowicz, Koji Nakabayashi, Christian Näther, more

Angewandte Chemie International Edition > 60 > 5 > 2330 - 2338

Bistable and stimuli‐responsive molecule‐based materials are promising candidates for the development of molecular switches and sensors for future technologies. The CN‐bridged {NH₄[Ni(cyclam)][Fe(CN)₆]⋅5 H₂O}_n chain exists in two valence states: Ni^II‐Fe^III (1^HT) and Ni^III‐Fe^II (1^LT) and shows unique multiresponsivity under ambient conditions to various stimuli, including temperature, pressure, light,...

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Rücktitelbild: Room‐Temperature Bistability in a Ni–Fe Chain: Electron Transfer Controlled by Temperature, Pressure, Light, and Humidity (Angew. Chem. 5/2021)

Mateusz Reczyński, Dawid Pinkowicz, Koji Nakabayashi, Christian Näther, more

Angewandte Chemie > 133 > 5 > 2740 - 2740

Stimuliresponsive Materialien sind wichtig für die Konstruktion von molekularen Schaltern oder Sensoren. In ihrem Forschungsartikel auf S. 2360 berichten Mateusz Reczyński, Shin‐ichi Ohkoshi, Beata Nowicka und Mitarbeiter über Raumtemperatur‐Bistabilität in einer CN‐verbrückten Ni‐Fe‐Koordinationskette, die ein multireaktives Verhalten mit Elektronentransferübergängen zeigt, die durch Temperatur,...

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Room‐Temperature Bistability in a Ni–Fe Chain: Electron Transfer Controlled by Temperature, Pressure, Light, and Humidity

Mateusz Reczyński, Dawid Pinkowicz, Koji Nakabayashi, Christian Näther, more

Angewandte Chemie > 133 > 5 > 2360 - 2368

Bistable and stimuli‐responsive molecule‐based materials are promising candidates for the development of molecular switches and sensors for future technologies. The CN‐bridged {NH₄[Ni(cyclam)][Fe(CN)₆]⋅5 H₂O}_n chain exists in two valence states: Ni^II‐Fe^III (1^HT) and Ni^III‐Fe^II (1^LT) and shows unique multiresponsivity under ambient conditions to various stimuli, including temperature, pressure, light,...

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Об универбатах с формантом „-ка”

Beata Nowicka

Studia Rossica Posnaniensia > 2010 > 35 > 177-182

This article is devoted to the study of Russian derivatives with suffix -к(а) which are the result of univerbisation, i.e. transformation of complex nominal expression into a single word with the same meaning, cf. камералка ← камеральная обработка, канадка ← канадская стрижка, секретка ← секретное противоугонное устройство. The analysis demonstrated here is based on the material of the latest Russian...

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Solvatomagnetic Studies on Cyano‐Bridged Bimetallic Chains Based on [Mn(cyclam)]³⁺ and Hexacyanometallates

Beata Nowicka, Michał Heczko, Michał Rams, Mateusz Reczyński, more

European Journal of Inorganic Chemistry > 2017 > 1 > 99 - 106

Structures and solvatomagnetic properties of two 1D CN‐bridged assemblies based on the complex [Mn(cyclam)]³⁺ (cyclam = 1,4,8,11‐tetraazacyclotetradecane) were characterised. The isostructural {[Mn(cyclam)][Cr(CN)₆]·6H₂O}_n (1·6H₂O) and {[Mn(cyclam)][Fe(CN)₆]·6H₂O}_n (2·6H₂O) chains crystallise in the space group C2/m. When dried in air at a slightly elevated temperature the hexahydrates undergo irreversible...

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Structure dependent charge transfer in bipyrimidinium–octacyanotungstate ion pairs

Beata Nowicka, Wojciech Nitek, Piotr Pietrzyk, Barbara Sieklucka

Polyhedron > 2016 > 119 > C > 1-6

Two solid state forms of the {(bpymH₂)²⁺,[W^IV(CN)₈]⁴⁻} charge-transfer ion pair have been obtained in the reaction between 2,2′-bipyrimidine (bpym) and octacyanotungstate(IV) in acidic solution and characterised in terms of structure and spectroscopic properties: (bpymH₂)₂[W^IV(CN)₈]·4H₂O (1) and (PPh₄)₂(bpymH₂)[W^IV(CN)₈]·10H₂O (2). In contrast to the yellow potassium salt, compound 1 is red and shows...

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C-3 benzoic acid derivatives of C-3 deoxybetulinic acid and deoxybetulin as HIV-1 maturation inhibitors

Zheng Liu, Jacob J. Swidorski, Beata Nowicka-Sans, Brian Terry, more

Bioorganic & Medicinal Chemistry > 2016 > 24 > 8 > 1757-1770

A series of C-3 phenyl- and heterocycle-substituted derivatives of C-3 deoxybetulinic acid and C-3 deoxybetulin was designed and synthesized as HIV-1 maturation inhibitors (MIs) and evaluated for their antiviral activity and cytotoxicity in cell culture. A 4-subsituted benzoic acid moiety was identified as an advantageous replacement for the 3′3′-dimethylsuccinate moiety present in previously disclosed...

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Inhibitors of HIV-1 maturation: Development of structure–activity relationship for C-28 amides based on C-3 benzoic acid-modified triterpenoids

Jacob J. Swidorski, Zheng Liu, Sing-Yuen Sit, Jie Chen, more

Bioorganic & Medicinal Chemistry Letters > 2016 > 26 > 8 > 1925-1930

We have recently reported on the discovery of a C-3 benzoic acid (1) as a suitable replacement for the dimethyl succinate side chain of bevirimat (2), an HIV-1 maturation inhibitor that reached Phase II clinical trials before being discontinued. Recent SAR studies aimed at improving the antiviral properties of 2 have shown that the benzoic acid moiety conferred topographical constraint to the pharmacophore...

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Construction of CN−-bridged molecular squares employing penta-, hexa- and octa-coordinated metal ions

Tomasz Korzeniak, Beata Nowicka, Katarzyna Stadnicka, Wojciech Nitek, more

Polyhedron > 2013 > 52 > Complete > 442-447

Three new cyanido-bridged discrete bimetallic assemblies based on [W(CN) ₆ (bpy)] ²⁻ building block have been synthesised and structurally characterised. Neutral molecular square {[Ni(bpy) ₂ ] ₂ [W(CN) ₆ (bpy)] ₂ }·nH ₂ O (1) (bpy=2,2′-bipyridine) has been constructed from [Ni ^II (bpy) ₂ (H ₂ O) ₂ ] ²⁺ ...

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Cyclams with varied degree of protonation in the assemblies with cyano complexes of Mo and W

Beata Nowicka, Mateusz Reczyński, Wojciech Nitek, Barbara Sieklucka

Polyhedron > 2012 > 47 > 1 > 73-78

Five ionic assemblies of octacoordinated cyano complexes of molybdenum and tungsten with protonated cyclam (1,4,8,11-tetraazacyclotetradecane) and tmc (1,4,8,11-tetramethyl-1,4,8,11-tetraazacyclotetradecane) have been obtained: (cyclamH ₄ )[Mo ^IV (CN) ₈ ]·1.5H ₂ O (1), (cyclamH ₂ )(cyclamH ₄ )[W ^V (CN) ₈ ] ₂ ·4H ₂ O (2),...

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The impact of ligands upon topology and functionality of octacyanidometallate-based assemblies

Beata Nowicka, Tomasz Korzeniak, Olaf Stefańczyk, Dawid Pinkowicz, more

Coordination Chemistry Reviews > 2012 > 256 > 17-18 > 1946-1971

Complete overview of octacyanidometallate polymetallic assemblies is presented from a novel viewpoint of the importance of incorporated ligands. The ligands are classified according to their structure and binding mode in metal–ligand–octacyanidometallate systems and their impact on topology and functionality is discussed. Monodentate ligands favour high-dimensionality structures and long-range magnetic...

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A Decade of Octacyanides in Polynuclear Molecular Materials (Eur. J. Inorg. Chem. 3/2011)

Barbara Sieklucka, Robert Podgajny, Tomasz Korzeniak, Beata Nowicka, more

European Journal of Inorganic Chemistry > 2011 > 3 > n/a - n/a

The cover picture shows the fragment of the cyanido‐bridged framework of a series of 3D isostructural {[M′^II(pyrazole)₄]₂[Nb^IV(CN)₈]·4H₂O}_n (M′ = Mn, Fe, Co, Ni) molecular magnets illuminating the landscape of the old‐fashioned ABIT‐VH6 electronic motherboard. The Microreview by B. Sieklucka et al. on p. 305 ff presents different types of functionality of octacyanidometallate‐based assemblies with...

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A Decade of Octacyanides in Polynuclear Molecular Materials

Barbara Sieklucka, Robert Podgajny, Tomasz Korzeniak, Beata Nowicka, more

European Journal of Inorganic Chemistry > 2011 > 3 > 305 - 326

The aim and the scope of this review is to show the results of ten years of research following the first reports on magnetic and photomagnetic assemblies constructed from [M(CN)₈]^n–. It is illustrated on the basis of our own work as well as a wide range of studies carried out in numerous laboratories around the world. The diversity and evolution of topological and structural patterns is discussed...

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Increased sensitivity of HIV variants selected by attachment inhibitors to broadly neutralizing antibodies

Nannan Zhou, Li Fan, Hsu-Tso Ho, Beata Nowicka-Sans, more

Virology > 2010 > 402 > 2 > 256-261

Treatment with HIV attachment inhibitors (AIs) can select for escape mutants throughout the viral envelope. We report on three such mutations: F423Y (gp120 CD4 binding pocket) and I595F and K655E (gp41 ectodomain). Each displayed decreased sensitivity to the AI BMS-488043 and earlier generation AIs, along with increased sensitivity to the broadly neutralizing antibodies 2F5 and 4E10, without affecting...

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Inhibitors of Human Immunodeficiency Virus Type 1 (HIV-1) Attachment. 5. An Evolution from Indole to Azaindoles Leading to the Discovery of 1-(4-Benzoylpiperazin-1-yl)-2-(4,7-dimethoxy-1 H -pyrrolo[2,3- c ]pyridin-3-yl)ethane-1,2-dione (BMS-488043), a Drug Candidate That Demonstrates Antiviral Activity in HIV-1-Infected Subjects ^∞

Tao Wang, Zhiwei Yin, Zhongxing Zhang, John A. Bender, more

Journal of Medicinal Chemistry > 2009 > 52 > 23 > 7778 - 7787

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Reversible Guest-Induced Magnetic and Structural Single-Crystal-to-Single-Crystal Transformation in Microporous Coordination Network {[Ni(cyclam)] ₃ [W(CN) ₈ ] ₂ } n

Beata Nowicka, Michał Rams, Katarzyna Stadnicka, Barbara Sieklucka

Inorganic Chemistry > 2007 > 46 > 20 > 8123 - 8125

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Structure and properties of the ion pair charge-transfer complex of octacyanotungstate(IV) with the 2,2′-bipyridinium dication

Janusz Szklarzewicz, Alina Samotus, Beata Nowicka, John Burgess, more

Transition Metal Chemistry > 1999 > 24 > 2 > 177-182

The X-ray crystal structure of (bpyH2)2[W(CN)8]·4H2 O (bpyH2=2,2′-bipyridinium) is described. The [W(CN)8]4− anion has an approximately square antiprismatic (D4d) conformation, seemingly imposed by strong anion–water–cation hydrogen-bonding interactions. Bond distances in the anion are: WC 2.150(5), 2.163(5); CN 1.128(6), 1.145(6)Å and the angles WCN are 177.6(5), 178.3(5)°. The dihydrate and the...

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Syntheses and X-ray crystal structure of (dq) 2 [M (CN) 8] ·5H2O (M = Mo, W; dq = diquat)

Beata Nowicka, Alina Samotus, Janusz Szklarzewicz, John Burgess, more

Polyhedron > 1998 > 17 > 18 > 3167-3174

Reaction between diquat (dq=6,7-dihydrodipyrido- [1,2-a:2′,1′-c] pyrazinediium) and [M (CN) ₈] ⁴− (M=Mo or W) led to the isolation of (dq) ₂ [M (CN) ₈] ·5H₂O salts. Both salts were found to be isomorphic. The [M (CN) ₈] ⁴− anion has an approximately dodecahedral D_2d configuration. The structure consists of a three dimensional hydrogen bonded network. The intensely coloured solids (hydrated and anhydrous)...

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Solvent Effects on the piezochromism of molybdenum(IV) and tungsten(IV) anions [M(CN)₃O(diimine)]⁻

Beata Nowicka, John Burgess, Simon A. Parsons, Alina Samotus, more

Transition Metal Chemistry > 1998 > 23 > 3 > 317-319

Solvatochromism of the [Mo(CN)₃O(phen)]⁻ ion has been studied. Solvent effects on pressure dependence (up to 1.25 kbar) of wavelengths of maximum absorption for charge-transfer bands of several molybdenum(IV) and tungsten(IV) complexes, [M(CN)₃O(diimine)]⁻ (M = Mo or W), are described. The effects of applied pressure are larger for less polar unstructured solvents than for highly polar hydrogen-bonded...

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Search results for: Beata Nowicka

Back Cover: Room‐Temperature Bistability in a Ni–Fe Chain: Electron Transfer Controlled by Temperature, Pressure, Light, and Humidity (Angew. Chem. Int. Ed. 5/2021)

Room‐Temperature Bistability in a Ni–Fe Chain: Electron Transfer Controlled by Temperature, Pressure, Light, and Humidity

Rücktitelbild: Room‐Temperature Bistability in a Ni–Fe Chain: Electron Transfer Controlled by Temperature, Pressure, Light, and Humidity (Angew. Chem. 5/2021)

Room‐Temperature Bistability in a Ni–Fe Chain: Electron Transfer Controlled by Temperature, Pressure, Light, and Humidity

Об универбатах с формантом „-ка”

Solvatomagnetic Studies on Cyano‐Bridged Bimetallic Chains Based on [Mn(cyclam)]³⁺ and Hexacyanometallates

Structure dependent charge transfer in bipyrimidinium–octacyanotungstate ion pairs

C-3 benzoic acid derivatives of C-3 deoxybetulinic acid and deoxybetulin as HIV-1 maturation inhibitors

Inhibitors of HIV-1 maturation: Development of structure–activity relationship for C-28 amides based on C-3 benzoic acid-modified triterpenoids

Construction of CN−-bridged molecular squares employing penta-, hexa- and octa-coordinated metal ions

Cyclams with varied degree of protonation in the assemblies with cyano complexes of Mo and W

The impact of ligands upon topology and functionality of octacyanidometallate-based assemblies

A Decade of Octacyanides in Polynuclear Molecular Materials (Eur. J. Inorg. Chem. 3/2011)

A Decade of Octacyanides in Polynuclear Molecular Materials

Increased sensitivity of HIV variants selected by attachment inhibitors to broadly neutralizing antibodies

Reversible Guest-Induced Magnetic and Structural Single-Crystal-to-Single-Crystal Transformation in Microporous Coordination Network {[Ni(cyclam)] ₃ [W(CN) ₈ ] ₂ } n

Structure and properties of the ion pair charge-transfer complex of octacyanotungstate(IV) with the 2,2′-bipyridinium dication

Syntheses and X-ray crystal structure of (dq) 2 [M (CN) 8] ·5H2O (M = Mo, W; dq = diquat)

Solvent Effects on the piezochromism of molybdenum(IV) and tungsten(IV) anions [M(CN)₃O(diimine)]⁻

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