Syntheses and Structures of Bis(azido)- and Bis(<i>tert</i>-butoxy)cyclodistibazanes

Haagenson, Dana C.; Stahl, Lothar; Staples, Richard J.

doi:10.1021/ic010247c

Cited by 34 publications

(44 citation statements)

References 24 publications

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“…Comparable values have been observed for Sb(N 3 ) 3 (178.3(5)°)30 and SbCl(N 3 ) 2 (177(1), 178.8(9)°) 31. The N α N β bond lengths ( 6 : N3N4 1.222(2), N6N7 1.2094(19); 7 : N3N4 1.2075(16), N6N7 1.2320(16) Å) are longer than the N β N γ bond lengths ( 6 : N4N5 1.138(2), N7N8 1.148(2); 7 : N4N5 1.1479(17), N7N8 1.1315(16) Å) as observed for Sb(N 3 ) 3 (1.233(6), 1.131(6) Å),30 [N 3 Sb(μ‐N t Bu)] 2 (1.222(5), 1.133(5) Å),33b and in Sb(V) azides, such as Ph 4 SbN 3 (1.198(4), 1.150(4) Å)38 and [Ph 4 P][Sb(N 3 ) 6 ] (av. values 1.22 and 1.12 Å) 39…”

Section: Resultssupporting

confidence: 57%

Synthesis, Electronic Properties, and Reactivity of Phospholes and 1,1′‐Biphospholes Bearing 2‐ or 3‐Thienyl C‐Substituents

Fadhel

Szieberth

Deborde

et al. 2009

Chemistry A European J

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Two series of phospholes and 1,1'-biphospholes bearing either 2- or 3-thienyl substituents at the C atoms are prepared by using the Fagan-Nugent route. Their optical (UV/Vis absorption, fluorescence spectra) and electrochemical properties are systematically evaluated. Of particular interest, the first ever reported 3-thienyl-substituted phospholes exhibit higher LUMO levels than their 2-thienyl analogues, and show accordingly different physical properties. This study also reveals that the 1,1'-biphospholes exhibit sigma-pi conjugation. The phosphole and 1,1'-biphosphole derivatives bearing 3-thienyl substituents are characterized by X-ray diffraction study. The structure-property relationship established following the experimental data are fully supported by theoretical studies including time-dependent(TD)-DFT spectra. A photocyclization reaction performed on the thioxo- and oxophospholes having 3-thienyl substituents affords a novel ring-fused phosphole-thiophene derivative, which was characterized by an X-ray diffraction study. The structure and electronic properties of this novel dithienophosphole are discussed based on experimental and theoretical data.

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Section: Resultssupporting

confidence: 57%

Synthesis, Electronic Properties, and Reactivity of Phospholes and 1,1′‐Biphospholes Bearing 2‐ or 3‐Thienyl C‐Substituents

Fadhel

Szieberth

Deborde

et al. 2009

Chemistry A European J

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“…[14] not yet known. The only known acyclic antimony azides reported are Sb(N 3 ) 3 , [15,16] ClSb(N 3 ) 2 , [17] [Sb(N 3 ) 4 ] -, [18] [Sb(N 3 ) 4 ] + , [18] Sb(N 3 ) 5 , [19] [Sb(N 3 ) 6 ] -, [19] and Sb(C 6 H 5 ) 4 -(N 3 ).…”

Section: Scheme 1 Synthesis Of Halogen-substituted Cyclo-13-distibamentioning

confidence: 99%

“…[4] Stahl introduced a simple one-pot synthesis of [Cl-Sb(μ-NtBu)] 2 by using SbCl 3 and tBuNH 2 . The structure was determined by Chivers et al [5,6] Recently, a series of four-membered rings of the type [XSb(μ-NR)] 2 , which contain alternating antimony(III) and nitrogen centers, were synthesized and fully characterized (X = halogen, R = supermesityl = 2,4,6-tri-tert-butylphenyl = Mes*), and represent rare examples of cyclo-distibadiazanes. [7] The synthesis was carried out by starting from the triflate (triflate = CF 3 SO 3 -= OTf) species [TfO-Sb(μ-NR)] 2 (Scheme 1).…”

Section: Introductionmentioning

confidence: 99%

Syntheses, Structure, and Reactivity of Amino(azido)stibanes

2012

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Amino(azido)stibanes Mes*N(SiMe 3 )Sb(N 3 )X (X = N 3 , Cl, OTf) were synthesized and fully characterized. Their structures were determined by single-crystal X-ray diffraction and are rare examples of antimony azides. On account of weak Sb···X van der Waals interactions, centrosymmetric dimers are observed in the solid state. Mes*N(SiMe 3 )Sb(OTf)X species (X = Cl, N 3 , and OTf; OTf = triflate = CF 3 SO 3 -) are labile

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“…Usually, a doublet peak have seen for methyl protons in compounds with the (CH 3 1 H NMR spectrum for this compound by simplification of the A 3 A 3 MM XX spin system to an A 3 A 3 XX system with the assumption that 2 J P P = 140.0 Hz. The structure of pseudo-triplet they obtained consists of two sharp outer parts, and the central part is a quartet [40].…”

Section: Synthetic and Spectroscopic Aspectsmentioning

confidence: 99%

“…The chemistry of small inorganic heterocycles of the type (P N) 2 researches [1][2][3], mainly because such molecules are good starting materials for polycyclic inorganic and organometallic compounds [4,5]. The wide range applications of cyclophosphazanes in nucleophilic substitution reactions on P Cl bonds [6,7], coordination chemistry [8], and ring-opening polymerization reactions [9] causes a significant attraction to this area of chemistry.…”

Section: Introductionmentioning

confidence: 99%