Institute of Inorganic Chemistry

Institute of Inorganic Chemistry 423 records found  beginprevious411 - 420next  jump to record: Search took 0.00 seconds. 
Inzerce síry do malých karbaboranů a inzerce uhlíku do thiaboranů
Jelínek, Tomáš ; Holub, Josef ; Štíbr, Bohumil
The reaction between elemental sulphur and smaller carbaboranes, such as arachno-4-CB8H14, arachno-4,5-C2B7H13, and range of other carbaboranes, provide a wide variety of products engendered from the simple insertion of sulphur into their skeletons.
Stereochemie karboranů vznikajících sedmistupňovou degradací dekaboranu
Hnyk, Drahomír ; Štíbr, Bohumil
The final level of geometry optimizations of these clusters of various molecular shapes included the effect of electron correlation, which considerably improved the fit between the calculated (GIAO-SCF or GIAO-MP2) and experimental 11B chemical shifts.
Neočekávaná reakce derivátů closo-thiadodekaboranu s fenylmagnesium bromidem
Císařová, I. ; Fusek, Jiří ; Macháček, Jan ; Plzák, Zbyněk
Derivatives of closo-thiadodecaborane, closo-SB11H11, undergo an unexpected hydrogen substitution under reaction with phenylmagnesium bromide.
Syntéza a přesmyky komplexů přechodných prvků s trikarbollidovými ligandy
Perekalin, DS. ; Holub, Josef ; Štíbr, Bohumil ; Kudinov, AR.
In continuation of the previous studies, we investigated the reactions of tricarbollide anions with various cationic metal-complex fragments. It was shown that the complexation is accompanied by an unusual low-temperature polyhedral rearrangement. Several examples for complexes with the amino-substituted anion are given below.
Supramolekulární variace založené na kobalt bis(dokarbollidovém) iontu(1-)
Grüner, Bohumír ; Mikulášek, Libor ; Báča, Jiří ; Císařová, I. ; Bőhmer, V.
Continuing interest in the development of liquid-liquid extraction and biomedicinal applications of [(1,2-C2B9H11)-3-Co]- anion (1), studied systematically in collaboration with other Groups, prompted us to explore the scope and limitations to create molecular systems containing several hydrophobic anions covalently bound together by simple organic bridging moieties or pre-organized on various supramolecular platforms.
Nukleofilní B-arylace na monokarbadodekaboranovém skeletu katalyzovaná Li (+)
Janoušek, Zbyněk ; Lehman, U. ; Častulík, J. ; Michl, J.
We are interested in the 12-vertex closo-carborane CB11H12- 1 with aryl substituents in positions 1 and 12, and its permethylated derivative, CHB11Me11- 2, in connection with the synthesis of rod like structures.
Chemie klastrových boranový analogů cyklopentadienidového aniontu a ferrocenu
Štíbr, Bohumil
Isomeric tricarbollide and phosphacarbollide anions of general nido structures [7,8,9-E3B8H8](1-) and [7,8,10-E3B8H8](2-)are borane-cluster analogues of the cyclopentadienide anions as they are monoanionic and contain an open pentagonal face capable of donatig five electrons into the metal shell.
Materials research report - Dying Hyrnéthó in the arms of Déiphotos. (oil on canvas), Franz Caucig 1755-1828. Castle Velké Losiny
Hradilová, J. ; Hradil, David ; Šímová, Veronika
Pre-restoration materials research of the painting is based on microscopic (both optical and electron) analyses of grounds and painting layers in the cross-sections of fragments with the aim to identify pigments and to describe the stratigraphy of re-paints involving to choose the suitable restoration procedure. Other methods (e.g. infrared spectroscopy or MALDI-TOF) are used for identification of binding media.
Materials research report - Themistokles looks for a haven besides the king Admétus (oil on canvas), Franz Caucig 1755-1828. Castle Velké Losiny
Hradilová, J. ; Hradil, David ; Šímová, Veronika
Pre-restoration materials research of the painting is based on microscopic (both optical and electron) analyses of grounds and painting layers in the cross-sections of fragments with the aim to identify pigments and to describe the stratigraphy of re-paints involving to choose the suitable restoration procedure. Other methods (e.g. infrared spectroscopy or MALDI-TOF) are used for identification of binding media.
Materials research report - Tomyris (oil on canvas), Ministry of Culture in Prague
Hradilová, J. ; Hradil, David ; Šímová, Veronika ; Bezdička, Petr ; Kučková, Štěpánka
Pre-restoration materials research of the painting is based on microscopic (both optical and electron) analyses of grounds and painting layers in the cross-sections of fragments with the aim to identify pigments and to describe the stratigraphy of re-paints involving to choose the suitable restoration procedure. Other methods (e.g. infrared spectroscopy or MALDI-TOF) are used for identification of binding media.

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