Contributions to the chemistry of silicon–sulfur compounds. Part 75. Cobalt(II) tri-tert-butoxysilanethiolates. Synthesis, properties, crystal and molecular structures of [Co{SSi(OtBu)3}2(L)] and [Co{SSi(OtBu)3}2(L)2] type complexes with monodentate nitrogen ligands

Becker, Barbara; Zalewska, A.; Konitz, Antoni; Wojnowski, W.

doi:10.1016/s0277-5387(01)00855-5

Cited by 32 publications

(33 citation statements)

References 18 publications

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“…The results obtained, together with the comparison with previous results [21][22][23], strongly suggest that the steric hindrance exerted by the methyl groups on pyridine has the main influence on the products formation.…”

Section: Resultssupporting

confidence: 72%

“…Previously, we described the structures of several mononuclear complexes with different CoN x O y S z and CoN x S y cores, most of which were molecular and neutral [21,22]. As a starting compound for all the syntheses, we use…”

Section: Resultsmentioning

confidence: 99%

“…The addition of a heterocyclic N-ligand to a solution of this complex causes breakage of the (Co-lS) 2 ring with simultaneous elimination of ammonia [21,22]. The currently presented complexes (Scheme 1) have been obtained with dimethylpyridine derivatives that introduce similar steric hindrance on the aromatic ring but with different positioning of the methyl groups.…”

Section: Resultsmentioning

confidence: 99%

“…However, the Co(II) complex was obtained in the synthesis with the solution of 2,4,6-trimethylpyridine, in which 3,5-dimethylpyridine was present as a contaminant [21]. We did not obtain this complex in the direct synthesis of the amine with [Co{l-SSi( The above results prompted us to explore the synthesis with dimethylpyridine, with the methyl groups located in positions of 3 and 4; the basicity of 3,4-dimethylpyridine (pK b = 7.54) is very similar to that of 3,5-dimetylpyridine (pK b = 7.85).…”

Section: Resultsmentioning

confidence: 99%

“…The Co1-O1 and Co1-O4 distances (2.3548 (16) and 2.3145(15) Ǻ , respectively) distinctly exceed the sum of covalent radii for Co and O, which is equal to 1.89 Å , but are nevertheless shorter than those found in similar metal silanethiolates with methyl and dimethyl pyridine derivatives. The S1-Co1-S2 angle is noticeably one of the narrowest angles among tri-tert-butoxysilanethiolate complexes with O,S-chelating bonds of silanethiolate residues [21,22].…”

Section: Crystal Structuresmentioning

confidence: 97%

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Cobalt(II) silanethiolato complexes with dimethylpyridines: crystal structures and spectroscopic studies

Pladzyk

Olszewska

Baranowska

et al. 2010

Transition Met Chem

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Cobalt(II) tri-tert-butoxysilanethiolates with 2,5-dimethylpyridine, 3,4-dimethylpyridine and 3,5-dimethylpyridine co-ligands have been synthesized by reaction ofwith the appropriate pyridines. The complexes were characterized by elemental analysis, single-crystal X-ray structure determination, IR and UV-Vis spectroscopy. These complexes are tetraor penta-coordinated with CoN 2 S 2 and CoNO 2 S 2 cores, respectively.

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Section: Resultssupporting

confidence: 72%

Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

Section: Crystal Structuresmentioning

confidence: 97%

See 3 more Smart Citations

Cobalt(II) silanethiolato complexes with dimethylpyridines: crystal structures and spectroscopic studies

Pladzyk

Olszewska

Baranowska

et al. 2010

Transition Met Chem

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Cobalt(II) and Cobalt(III) Tri-tert-butoxysilanethiolates. Synthesis, Properties, Crystal and Molecular Structures of [Co{μ-SSi(OBut)3}{SSi(OBut)3}(NH3)]2 and [Co{SSi(OBut)3}2(NH3)4][SSi(OBut)3] Complexes

Becker

Zalewska

Konitz

et al. 2001

Z. anorg. allg. Chem.

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The heteroleptic neutral tri-tert-butoxysilanethiolate of cobalt(II) incorporating ammonia as additional ligand (1) has been prepared by the reaction of a cobalt(II) ammine complex with tri-tert-butoxysilanethiol in water. Complex 1, dissolved in hexane, undergoes oxidation in an ammonia saturated atmosphere to the ionic cobalt(III) compound 2. Molecular and crystal structures of 1 and 2 have been determined by single crystal X-ray structural analysis. 1 forms a dimeric molecule [Co{l-SSi(OBu t ) 3 }{SSi(OBu t ) 3 }(NH 3 )] 2 with a folded central Co 2 S 2 ring and distorted tetrahedral ligand arrangement at both Co II atoms (CoNS 3 core). The product 2 is composed of the octahedral Co III complex cation [Co{SSi(OBu t ) 3 } 2 (NH 3 ) 4 ] + and the tri-tertbutoxysilanethiolate anion. Within the crystal two pairs of ions interact by hydrogen bonds forming well separated entities. 1 and 2 are the first structurally characterized cobalt thiolates where metal is also bonded to ammonia and 2 is the first cobalt(III) silanethiolate.Beitra È ge zur Chemie der Silicium-Schwefel Verbindungen. 74. Cobalt(II) und Cobalt(III) Tri-tert-butoxysilanthiolate. Darstellung, Eigenschaften, Kristall-und Moleku È lstrukturen von [Co{l-SSi(OBu t ) 3 }{SSi(OBu t ) 3 }(NH 3 )] 2 und [Co{SSi(OBu t ) 3 } 2 (NH 3 ) 4 ][SSi(OBu t ) 3 ]Inhaltsu È bersicht. Das heteroleptische, neutrale, als zusa Ètz-lichen Liganden Ammoniak enthaltende Cobalt(II)-tri-tertbutoxysilanthiolat (1) wurde bei der Umsetzung von Tri-tertbutoxysilanthiol mit einem Cobalt±Ammin-Komplex in wa È sseriger Lo È sung erhalten. Verbindung 1, aufgelo È st in Hexan, oxidiert sich in einer mit Ammoniak gesa È ttigen Atmospha È re zum ionischen Cobalt(III)-Komplex 2. Die Moleku È lund Kristallstrukturen von 1 und 2 wurden ro È ntgenographisch bestimmt. 1 bildet ein dimeres Moleku È l [Co{l-SSi(OBu t ) 3 }{SSi(OBu t ) 3 }(NH 3 )] 2 mit einen gefaltenen Co 2 S 2 Ring und einer fast tetraedrischen Anordnung der Liganden an beiden Co II -Atomen (CoNS 3 Rumpf). 2 ist ionisch aufgebaut mit einem oktaedrischen Co III -Kation [Co{SSi(OBu t ) 3 } 2 (NH 3 ) 4 ] + und einem Tri-tert-butoxysilanthiolat-Anion. Im Kristall sind zwei Paare dieser Ionen durch Wasserstoffbru È cken zu isolierten Einheiten gebunden.

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Cobalt(II) tri‐tert‐butoxysilanethiolates: in search of models for catalytic metal site of liver alcohol dehydrogenase

Becker

Pladzyk

Konitz

et al. 2002

Applied Organom Chemis

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Contributions to the chemistry of silicon–sulfur compounds. Part 75. Cobalt(II) tri-tert-butoxysilanethiolates. Synthesis, properties, crystal and molecular structures of [Co{SSi(OtBu)3}2(L)] and [Co{SSi(OtBu)3}2(L)2] type complexes with monodentate nitrogen ligands

Cited by 32 publications

References 18 publications

Cobalt(II) silanethiolato complexes with dimethylpyridines: crystal structures and spectroscopic studies

Cobalt(II) silanethiolato complexes with dimethylpyridines: crystal structures and spectroscopic studies

Cobalt(II) and Cobalt(III) Tri-tert-butoxysilanethiolates. Synthesis, Properties, Crystal and Molecular Structures of [Co{μ-SSi(OBut)3}{SSi(OBut)3}(NH3)]2 and [Co{SSi(OBut)3}2(NH3)4][SSi(OBut)3] Complexes

Cobalt(II) tri‐tert‐butoxysilanethiolates: in search of models for catalytic metal site of liver alcohol dehydrogenase

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