Solution thermodynamics of geometrical isomers of pyridino calix(4)arenes and their interaction with the silver cation. The X-ray structure of a 1:1 complex of silver perchlorate and acetonitrile with 5,11,17,23-tetra-tert-butyl-[25,26,27,28-tetrakis(2- pyridylmethyl)oxy]calix(4)arene

1998 ◽  
Vol 94 (20) ◽  
pp. 3097-3104 ◽  
Author(s):  
Angela F. Danil de Namor ◽  
Oscar E. Piro ◽  
Lupe E. Pulcha Salazar ◽  
Adolfo F. Aguilar-Cornejo ◽  
Nawar Al-Rawi ◽  
...  
Keyword(s):  
Solution Thermodynamics ◽  
Silver Cation ◽  
Geometrical Isomers ◽  
X Ray ◽  
Tert Butyl ◽  
Silver Perchlorate

X-Ray diffraction studies and solution thermodynamics of 5,7,17,23-para-tert-butyl-25,26,27,28-tetra(diethylamine)ethoxy- calix(4)arene

1998 ◽  
Vol 94 (9) ◽  
pp. 1257-1261 ◽  
Author(s):  
Angela F. Danil de Namor ◽  
Felix J. Sueros Velarde ◽  
Robert G. Hutcherson ◽  
Oscar E. Piro ◽  
Eduardo E. Castellano
Keyword(s):  
Solution Thermodynamics ◽  
X Ray Diffraction ◽  
X Ray ◽  
Tert Butyl

Laser Raman and infrared spectra, and x-ray crystal structure of trans-di-tert-butyl hyponitrite

1982 ◽  
Vol 104 (19) ◽  
pp. 5114-5119 ◽  
Author(s):  
Craig A. Ogle ◽  
Karen A. Van der Kooi ◽  
G. David Mendenhall ◽  
Veerayooth Lorprayoon ◽  
Bahne C. Cornilsen
Keyword(s):  
Crystal Structure ◽  
Infrared Spectra ◽  
X Ray ◽  
Tert Butyl ◽  
Laser Raman

Bis[dicarbonyl(cyclopentadienyl)ruthenium(I)] Komplexe / Bis[dicarbonyl(cyclopentadienyl)ruthenium(I)] Complexes

2002 ◽  
Vol 57 (9) ◽  
pp. 1017-1026 ◽  
Author(s):  
Herbert Schumann ◽  
Susanne Stenz ◽  
Frank Girgsdies ◽  
Stefan H. Mühle
Keyword(s):  
Single Crystal ◽  
Nmr Spectra ◽  
X Ray ◽  
Tert Butyl ◽  
New Compounds ◽  
C Nmr

Ru3(CO)12 reacts with 1-tert-butyl-2,4-cyclopentadiene (1), 1-trimethylsilyl-2,4-cyclopentadiene (2), 1-tert-butyl-3-methyl-2,4-cyclopentadiene (3), 1,3-di(tert-butyl)-2,4-cyclopentadiene (4), 1-iso-propyl-2,3,4,5-tetramethyl-2,4-cyclopentadiene (5), 1-tert-butyl-2,3,4,5-tetramethyl- 2,4-cyclopentadiene (6), 1-phenyl-2,3,4,5-tetramethyl-2,4-cyclopentadiene (7), 2,5- diphenyl-2,4-cyclopentadiene (8), or 2,3,4,5-tetraphenyl-2,4-cyclopentadiene (9) with formation of the corresponding bis[dicarbonyl(cyclopentadienyl) ruthenium(I)] complexes [RuCp# (CO)2]2 1a to 9a. The 1H and 13C NMR spectra of the new compounds 3a and 5a to 9a as well as the single crystal X-ray structures of 1a, 4a, 5a, 7a, 8a, and 9a are reported and discussed

Ru2(CO)6(ButNS) − Ein tert-Butylschwefelimid-Komplex mit Ru2NS-Tetrahedrangerüst / Ru2(CO)6(BUtNS) - A tert-Butyl Sulfur Imide Complex Containing a Ru2NS Tetrahedrane Skeleton

1987 ◽  
Vol 42 (1) ◽  
pp. 65-70 ◽  
Author(s):  
Max Herberhold ◽  
Wolfgang Bühlmeyer ◽  
Alfred Gieren ◽  
Thomas Hübner ◽  
J. Wu
Keyword(s):  
Structure Determination ◽  
X Ray ◽  
Tert Butyl ◽  
Type Complex

Abstract Fragmentation of bis(rm-butyl) sulfur diimide, S(NBut)2 (1a), in the presence of Ru3(CO)12 leads to a yellow tetrahedrane-type complex Ru2(CO)6(ButNS) (3a) containing tert-butyl sulfur imide as a six-electron ligand. According to the X-ray structure determination the N−S bond (1.716 Å) is arranged perpendicular to the Ru−Ru axis (2.661 Å).

scholarly journals New Spiro-Tin Compounds: Reaction of N,N′-Dialkyl Sulfur Diimides with Cyclic Bis(amino)stannylenes - Unexpected Formation of a N-N Bond

1995 ◽  
Vol 50 (12) ◽  
pp. 1811-1817 ◽  
Author(s):  
Max Herberhold ◽  
Christian Köhler ◽  
Wolfgang Milius ◽  
Bernd Wrackmeyer
Keyword(s):  
Molecular Structure ◽  
Magnetic Resonance ◽  
Single Crystal ◽  
Structure Analysis ◽  
Membered Ring ◽  
Monoclinic Space Group ◽  
Unexpected Formation ◽  
Tin Compounds ◽  
X Ray ◽  
Tert Butyl

N,N′-Dialkyl sulfur diimides (1), R(NSN)R [R = Me (a), Et (b), nPr (c), nBu (d)] react with cyclic bis(amino)stannylenes such as 1,3-di-tert-butyl-4,4-dimethyl-1,3,4,2λ2-diazasilastannetedine (2) or 1,3-di-tert-butyl-4,4,5,5-tetramethyl-1,3,4,5,2λ2-diazadisilastannolidine (3) in a 2:1 ratio to give the new spiro-tin(IV) compounds 5a-d, 6b and 6c, built from the respective cyclic bis(amino)stannylene and a seven-membered ring in which the two sulfur diimide groups are coupled via a N-N bond and across the tin atom. A 1:1 adduct 4 is proposed as an intermediate which is the final product 4e in the case of R = tBu (1e). The products were characterized by multinuclear magnetic resonance (1H, 13C, 15N, 29Si, 119Sn NMR), and in the case of 5c the molecular structure was determined by single crystal X-ray structure analysis [monoclinic, space group C2/c ; a = 1504.1(3), b = 1393.3(3), c = 1688.6(3) pm; β = 115.71(3)°].

Reaktionen mesoionischer Fünfringheterocyclen mit o-chinoiden Verbindungen, VI [1] Thermische Umlagerung eines [π4+π4]-Cycloaddukts / Reactions of Five-Membered Mesoionic Heterocycles with o-Quinonoid Compounds, VI [1] Thermal Rearrangement of a [π4+π4]-Cycloadduct

1982 ◽  
Vol 37 (5) ◽  
pp. 663-668 ◽  
Author(s):  
Willy Friedrichsen ◽  
Ingo Schwarz ◽  
Tony Debaerdemaeker
Keyword(s):  
Thermal Conditions ◽  
Thermal Rearrangement ◽  
X Ray ◽  
Tert Butyl ◽  
X Ray Crystallography ◽  
Mesoionic Heterocycles

3,5-Di-tert-butyl-o-benzoquinone (1) reacts with 3-methyl-2,4-diphenyl-l,3-oxazolium- 5-olat (2) to give a [π4 + π4] adduct (3). Under thermal conditions compound 3 rearranges to give 5 and 6. The structure of 5 has been clarified by X-ray crystallography

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