0000000000907278
AUTHOR
Raija Oilunkaniemi
showing 28 related works from this author
Chalcogen‐Bonding Interactions in Telluroether Heterocycles [Te(CH2)m]n (n=1-4; m=3-7)
2020
The Te…Te secondary bonding interactions (SBI) in solid heterocyclic telluroethers were explored by preparing and structurally characterizing a series of [Te(CH2)m]n (n = 1‐4; m = 3‐7) species. The SBIs in 1,7‐Te2(CH2)10, 1,8‐Te2(CH2)12, 1,5,9‐Te3(CH2)9, 1,8,15‐Te3(CH2)18, 1,7,13,19‐Te4(CH2)20, 1,8,15,22‐Te4(CH2)24, and 1,9,17,25‐Te4(CH2)28 led to the tubular packing of the molecules, as has been observed previously for related thio‐ and selenoether rings. The nature of the intermolecular interactions was explored by solid‐state PBE0‐D3/pob‐TZVP calculations involving periodic boundary conditions. The packing of molecules in 1,7,13,19‐Te4(CH2)20, 1,8,15,22‐Te4(CH2)24, and 1,9,17,25‐Te4(CH2)…
Isomerism in [MCl2(ERR‘)2] (M = Pd, Pt; E = S, Se; R, R‘ = Me, Ph)
2006
A series of thioether and selenoether complexes [MCl2(EPh2)2] and [MCl2(SMePh)2] (M = Pt, Pd; E = S, Se) have been prepared and characterized to explore the isomerism of the complexes in solution and in the solid state. The NMR spectroscopic information indicates that only one isomer is present in solution in case of the palladium complexes, while two isomers are formed in the case of most platinum complexes. Single-crystal X-ray structures of trans-[PdCl2(SPh2)2] (1t), trans-[PdCl2(SePh2)2] (2t), cis-[PtCl2(SePh2)2] (4c), trans-[PdCl2(SMePh)2] (5t), and trans-[PtCl2(SMePh)2] (7t) are reported and have been used as starting points for the X-ray powder diffraction structure determinations us…
"Identification of mixed bromidochloridotellurate anions in disordered crystal structures of (bdmim)2[TeX2Y4] (X, Y = Br, Cl; bdmim = 1-butyl-2,3-dim…
2013
Abstract The discrete mixed [TeBrxCl6−x]2− anions in their disordered crystal structures have been identified by using the phases prepared by the reaction of 1-butyl-2,3-dimethylimidazolium halogenides (bdmim)X with tellurium tetrahalogenides TeX4 (X = Cl, Br) as examples. Homoleptic (bdmim)2[TeX6] [X = Cl (1), Br (2)] and mixed (bdmim)2[TeBr2Cl4] (3), and (bdmim)2[TeBr4Cl2] (4) are formed depending on the choice of the reagents, and their crystal structures have been determined by single-crystal X-ray diffraction. The coordination environments of tellurium in all hexahalogenidotellurates are almost octahedral. Because of the crystallographic disorder, the mixed [TeBr2Cl4]2− and [TeBr4Cl2]2…
Formation, Structural Characterization, and Calculated NMR Chemical Shifts of Selenium-Nitrogen Compounds from SeCl4 and ArNHLi (Ar = supermesityl, m…
2004
Supermesityl selenium diimide [Se{N(C6H2tBu3-2, 4, 6)}2; Se{N(mes*)}2] can be prepared in a good yield from the reaction of SeCl4 and (mes*)NHLi. The molecule adopts an unprecedented anti, anti-conformation, as deduced by DFT calculations at PBE0/TZVP level of theory and supported by 77Se NMR spectroscopy and a crystal structure determination. An analogous reaction involving (C6H2Me3-2, 4, 6)NHLi [(mes)NHLi] unexpectedly lead to the reduction of selenium and afforded the selenium diamide Se{NH(mes)}2 that was characterized by X-ray crystallography and 77Se NMR spectroscopy. The Se-N bonds of 1.847(3) and 1.852(3) A show normal single bond lengths. The <NSeN bond angle of 109.9(1)° also indi…
An experimental and theoretical study of the isomerization of mononuclear bis(arylselenolato)bis(triphenylphosphine)platinum complexes [Pt(SeR)2(PPh3…
2003
Abstract Mononuclear bis(thienylselenolato)bis(triphenylphosphine)platinum [Pt(SeTh)2(PPh3)2] (Th=2-thienyl, C4H3S) has been prepared by the treatment of cis-[PtCl2(PPh3)2] with NaSeTh. The 31P-NMR spectroscopic information indicates that cis-[Pt(SeTh)2(PPh3)2] is initially formed in the reaction. Upon prolonged standing in solution it isomerizes to trans-[Pt(SeTh)2(PPh3)2]. The reaction of cis-[PtCl2(PPh3)2] with LiSeFu (Fu=2-furyl, C4H3O) affords immediately a mixture of cis- and trans-isomers of [Pt(SeFu)2(PPh3)2] with the relative amount of the trans-isomer increasing with time. The recrystallization of the two reaction mixtures yielded cis,anti- and trans,syn-isomers of [Pt(SeTh)2(PPh3…
Halogenation of tellurium by SO2Cl2. Formation and crystal structures of (H3O)[Te3Cl13]·1/2SO2, [(C4H8O)2H][TeCl5]·(C4H8O), [(Me2SO)2H]2[TeCl6], and …
2002
Abstract The halogenation of elemental tellurium with SO2Cl2 in various solvents has been investigated. (H3O)[Te3Cl13]·1/2SO2 (1) and [(C4H8O)2H][TeCl5]·(C4H8O) (2) were obtained in CS2 and THF, respectively. When DMSO is added into the THF solution of tellurium and SO2Cl2, [(Me2SO)2H]2[TeCl6] (3) is formed. In the acetonitrile solution tellurium and SO2Cl2 form [Ni(NCCH3)6][Te2Cl10] (4) in the presence of metallic nickel. All compounds 1–4 were characterized by 125Te NMR and by X-ray crystallography. The formation of the anions has been discussed.
A Selenium-Nitrogen Chain with Selenium in Different Oxidation States
2017
Ruthenium‐assisted tellurium abstraction in bis(thiophen‐2‐yl) ditelluride
2023
The reaction of [RuCl2(CO)3]2 and Te2Tpn2 (Tpn = thiophen-2-yl, C4H3S) in the absence of light resulted in the formation of cct-[RuCl2(CO)2(TeTpn2)2] (1) [cis(Cl)-cis(CO)-trans(TeTpn2)] and TeTpn2 (2) together with the precipitation of tellurium. The complex 1 and the monotelluride 2 were characterized by NMR spectroscopy and single-crystal X-ray diffraction. The decomposition of Te2Tpn2 to TeTpn2 has been monitored by 125Te NMR spectroscopy and seemed to be faster than the ligand substitution in [RuCl2(CO)3]2 by TeTpn2. A catalytic cycle is proposed for the decomposition of Te2Tpn2 to TeTpn2 based on the PBE0-D3/def2-TZVP calculations. peerReviewed
Front Cover: Chalcogen‐Bonding Interactions in Telluroether Heterocycles [Te(CH 2 ) m ] n ( n= 1–4; m= 3–7) (Chem. Eur. J. 61/2020)
2020
Chalcogen‐Bonding Interactions in Telluroether Heterocycles [Te(CH2)m]n(n=1–4;m=3–7)
2020
The Te⋅⋅⋅Te secondary bonding interactions (SBIs) in solid cyclic telluroethers were explored by preparing and structurally characterizing a series of [Te(CH2 )m ]n (n=1-4; m=3-7) species. The SBIs in 1,7-Te2 (CH2 )10 , 1,8-Te2 (CH2 )12 , 1,5,9-Te3 (CH2 )9 , 1,8,15-Te3 (CH2 )18 , 1,7,13,19-Te4 (CH2 )20 , 1,8,15,22-Te4 (CH2 )24 and 1,9,17,25-Te4 (CH2 )28 lead to tubular packing of the molecules, as has been observed previously for related thio- and selenoether rings. The nature of the intermolecular interactions was explored by solid-state PBE0-D3/pob-TZVP calculations involving periodic boundary conditions. The molecular packing in 1,7,13,19-Te4 (CH2 )20 , 1,8,15,22-Te4 (CH2 )24 and 1,9,17,…
Identification of mixed bromidochloridotellurate anions in disordered crystal structures of (bdmim)2[TeX2Y4] (X, Y = Br, Cl; bdmim = 1-butyl-2,3-dime…
2014
The discrete mixed [TeBrxCl6−x]2− anions in their disordered crystal structures have been identified by using the phases prepared by the reaction of 1-butyl-2,3-dimethylimidazolium halogenides (bdmim)X with tellurium tetrahalogenides TeX4 (X = Cl, Br) as examples. Homoleptic (bdmim)2[TeX6] [X = Cl (1), Br (2)] and mixed (bdmim)2[TeBr2Cl4] (3), and (bdmim)2[TeBr4Cl2] (4) are formed depending on the choice of the reagents, and their crystal structures have been determined by single-crystal X-ray diffraction. The coordination environments of tellurium in all hexahalogenidotellurates are almost octahedral. Because of the crystallographic disorder, the mixed [TeBr2Cl4]2− and [TeBr4Cl2]2− anions …
Experimental and computational investigation on the formation pathway of [RuCl2(CO)2(ERR′)2] (E = S, Se, Te; R, R′ = Me, Ph) from [RuCl2(CO)3]2 and E…
2022
The pathways to the formation of the series of [RuCl2(CO)2(ERR′)2] (E = S, Se, Te; R, R′ = Me, Ph) complexes from [RuCl2(CO)3]2 and ERR′ have been explored experimentally in THF and CH2Cl2, and computationally by PBE0-D3/def2-TZVP calculations. The end-products and some reaction intermediates have been isolated and identified by NMR spectroscopy, and their crystal structures have been determined by X-ray diffraction. The relative stabilities of the [RuCl2(CO)2(ERR′)2] isomers follow the order cct > ccc > tcc > ttt ≈ ctc (the terms c/t refer to cis/trans arrangement of the ligands in the order of Cl, CO, and ERR′). The yields were rather similar in both solvents, but the reactions were signi…
A Selenium-Nitrogen Chain with Selenium in Different Oxidation States
2017
The reaction of tBuNH2 with a mixture of SeCl2 and SeOCl2 in a 6:2:1 molar ratio produces the novel selenium-nitrogen chain ClSeN(tBu)Se(O)Cl (4), in which the selenium atoms are in two different oxidation states, SeII and SeIV. The crystal structure of 4 is compared with that of the related SeII/SeII system ClSeN(tBu)SeCl (1) and differences are attributed to hyperconjugative effects. The energetics of the formation of 4 via two different routes are elucidated by PBE0/def2-TZVPP calculations. peerReviewed
CCDC 2060504: Experimental Crystal Structure Determination
2023
Related Article: Marjaana Taimisto, Merja J. Poropudas, J. Mikko Rautiainen, Raija Oilunkaniemi, Risto S. Laitinen|2023|Eur.J.Inorg.Chem.||e202200772|doi:10.1002/ejic.202200772
CCDC 1986246: Experimental Crystal Structure Determination
2020
Related Article: Marko Rodewald, J. Mikko Rautiainen, Tobias Niksch, Helmar Görls, Raija Oilunkaniemi, Wolfgang Weigand, Risto S. Laitinen|2020|Chem.-Eur.J.|26|13806|doi:10.1002/chem.202002510
CCDC 1522803: Experimental Crystal Structure Determination
2017
Related Article: Aino J. Karhu, Juho Jämsä, J. Mikko Rautiainen, Raija Oilunkaniemi, Tristram Chivers and Risto S. Laitinen|2017|Z.Anorg.Allg.Chem.|643|495|doi:10.1002/zaac.201700031
CCDC 1986247: Experimental Crystal Structure Determination
2020
Related Article: Marko Rodewald, J. Mikko Rautiainen, Tobias Niksch, Helmar Görls, Raija Oilunkaniemi, Wolfgang Weigand, Risto S. Laitinen|2020|Chem.-Eur.J.|26|13806|doi:10.1002/chem.202002510
CCDC 929110: Experimental Crystal Structure Determination
2014
Related Article: Sari M. Närhi, Johanna Kutuniva, Marja K. Lajunen, Manu K. Lahtinen, Heikki M. Tuononen, Antti J. Karttunen, Raija Oilunkaniemi, Risto S. Laitinen|2014|Spectrochim.Acta,Part A|117|728|doi:10.1016/j.saa.2013.09.063
CCDC 929107: Experimental Crystal Structure Determination
2014
Related Article: Sari M. Närhi, Johanna Kutuniva, Marja K. Lajunen, Manu K. Lahtinen, Heikki M. Tuononen, Antti J. Karttunen, Raija Oilunkaniemi, Risto S. Laitinen|2014|Spectrochim.Acta,Part A|117|728|doi:10.1016/j.saa.2013.09.063
CCDC 929106: Experimental Crystal Structure Determination
2014
Related Article: Sari M. Närhi, Johanna Kutuniva, Marja K. Lajunen, Manu K. Lahtinen, Heikki M. Tuononen, Antti J. Karttunen, Raija Oilunkaniemi, Risto S. Laitinen|2014|Spectrochim.Acta,Part A|117|728|doi:10.1016/j.saa.2013.09.063
CCDC 2060503: Experimental Crystal Structure Determination
2023
Related Article: Marjaana Taimisto, Merja J. Poropudas, J. Mikko Rautiainen, Raija Oilunkaniemi, Risto S. Laitinen|2023|Eur.J.Inorg.Chem.||e202200772|doi:10.1002/ejic.202200772
CCDC 1986249: Experimental Crystal Structure Determination
2020
Related Article: Marko Rodewald, J. Mikko Rautiainen, Tobias Niksch, Helmar Görls, Raija Oilunkaniemi, Wolfgang Weigand, Risto S. Laitinen|2020|Chem.-Eur.J.|26|13806|doi:10.1002/chem.202002510
CCDC 1986248: Experimental Crystal Structure Determination
2020
Related Article: Marko Rodewald, J. Mikko Rautiainen, Tobias Niksch, Helmar Görls, Raija Oilunkaniemi, Wolfgang Weigand, Risto S. Laitinen|2020|Chem.-Eur.J.|26|13806|doi:10.1002/chem.202002510
CCDC 1986251: Experimental Crystal Structure Determination
2020
Related Article: Marko Rodewald, J. Mikko Rautiainen, Tobias Niksch, Helmar Görls, Raija Oilunkaniemi, Wolfgang Weigand, Risto S. Laitinen|2020|Chem.-Eur.J.|26|13806|doi:10.1002/chem.202002510
CCDC 1986252: Experimental Crystal Structure Determination
2020
Related Article: Marko Rodewald, J. Mikko Rautiainen, Tobias Niksch, Helmar Görls, Raija Oilunkaniemi, Wolfgang Weigand, Risto S. Laitinen|2020|Chem.-Eur.J.|26|13806|doi:10.1002/chem.202002510
CCDC 1986250: Experimental Crystal Structure Determination
2020
Related Article: Marko Rodewald, J. Mikko Rautiainen, Tobias Niksch, Helmar Görls, Raija Oilunkaniemi, Wolfgang Weigand, Risto S. Laitinen|2020|Chem.-Eur.J.|26|13806|doi:10.1002/chem.202002510
CCDC 929108: Experimental Crystal Structure Determination
2014
Related Article: Sari M. Närhi, Johanna Kutuniva, Marja K. Lajunen, Manu K. Lahtinen, Heikki M. Tuononen, Antti J. Karttunen, Raija Oilunkaniemi, Risto S. Laitinen|2014|Spectrochim.Acta,Part A|117|728|doi:10.1016/j.saa.2013.09.063
CCDC 929109: Experimental Crystal Structure Determination
2014
Related Article: Sari M. Närhi, Johanna Kutuniva, Marja K. Lajunen, Manu K. Lahtinen, Heikki M. Tuononen, Antti J. Karttunen, Raija Oilunkaniemi, Risto S. Laitinen|2014|Spectrochim.Acta,Part A|117|728|doi:10.1016/j.saa.2013.09.063