Isolation, characterization, and substitution reactions of the osmium trinuclear triflate complex H2Os3(CO)9(O3SCF3)2. X-ray crystal structure of the mixed oxyligand cluster (.mu.-H)2Os3(CO)9(.mu.,.eta.2-O2CCH3)(.eta.1-O3SCF3)

1991 ◽  
Vol 30 (1) ◽  
pp. 78-85 ◽  
Author(s):  
Greg R. Frauenhoff ◽  
Scott R. Wilson ◽  
John R. Shapley
Keyword(s):  
Crystal Structure ◽  
Substitution Reactions ◽  
X Ray

Substitutionsreaktionen am Niobtetrafluorid-Komplex (η5-C5Me5)NbF4 / Substitution Reactions on the Tetrafluoro Niobium Complex (η5-C5Me5)NbF4

1990 ◽  
Vol 45 (4) ◽  
pp. 423-426 ◽  
Author(s):  
Yuming Xu ◽  
Herbert W. Roesky ◽  
Frank Schrumpf ◽  
Mathias Noltemeyer
Keyword(s):  
Crystal Structure ◽  
Lithium Salts ◽  
Chelate Complexes ◽  
Substitution Reactions ◽  
X Ray

Cp*NbF4 (1) (Cp* = η5-C5Me5) reacts with lithium salts of β-diketones under elimination of LiF to form the chelate complexes (2) and (3). The X-ray crystal structure of 3 was investigated and is compared with the homologous tantalum compound.

Metallophosphoranes: Carbonyl substitution reactions and the X-ray crystal structure of cis-Cat2PMn(CO)4P(OPh)3 (Cat = benzodioxyl)

1985 ◽  
Vol 294 (3) ◽  
pp. 347-355 ◽  
Author(s):  
Suman K. Chopra ◽  
Shirley S.C. Chu ◽  
Patrice De Meester ◽  
Darren E. Geyer ◽  
Michael Lattman ◽  
...  
Keyword(s):  
Crystal Structure ◽  
Substitution Reactions ◽  
X Ray ◽  
Carbonyl Substitution

Substitutionsreaktionen an der N-Chlornitrenogruppe des [WCl4(NCl)]2. Die Kristallstrukturen von [CH3CN—WCl4(NSMe)] und [WNCl3 · NC—CH3]4 / Substitution Reactions at the N-Chloronitreno Group of [WCl4(NCl)]2. The Crystal Structures of [CH3CN—WCl4(NSMe)] and [WNCl3 · NC—CH3]4

1989 ◽  
Vol 44 (8) ◽  
pp. 903-910 ◽  
Author(s):  
Astrid Görge ◽  
Ute Patt-Siebel ◽  
Ulrich Müller ◽  
Kurt Dehnicke
Keyword(s):  
Crystal Structure ◽  
Ir Spectra ◽  
Structure Determination ◽  
Monoclinic Space Group ◽  
Trans Position ◽  
Crystal Data ◽  
Substitution Reactions ◽  
Space Group ◽  
X Ray ◽  
Structure Determinations

[WCl4(NCl)]2 reacts in acetonitrile with the trimethylsilyl compounds Me3SiSR (R = Me, Ph), and Me3SiESiMe3 (E = S, Se), with substitution of the chlorine atom of the N-chloronitreno group W=N–Cl and formation of CH3CN–WCl4(NSR) and CH3CN–WCl4(NEN)WCl4–NCCH3, respectively. Excess Me3SiBr reacts with CH3CN–WCl4(NSMe) to afford CH3CN–WBr4(NSMe). [CH3CN–WNCl3]4 was obtained from CH3CN–WCl4(NCl) and N(SiMe3)3. The products were characterized by their IR spectra. Two X-ray crystal structure determinations were also carried out. CH3CN—WCl4(NSMe) forms twinned crystals, and only non-overlapping reflexions of one of the twin individuals were used for the structure determination (846 unique values, R = 0.055). Crystal data: a = 592.4(2), b = 758.8(2), c = 1203.7(8) pm, β = 95.06(4)°, monoclinic, space group P21/m, Z = 2. The compound is a monomer in which the acetonitrile ligand is situated in the trans position to the W≡N–S̱̅–Me group. The bond lengths (W≡N 174(2), N–S 161(2) pm) and bond angles (WNS 176(1), NSC 102.1(9)°) are in agreement with the proposed formula. Crystal data for [CH3CN–WNCl3]4: a = 1009.5(2), b = 1274.5(2), c = 1287.9(2) pm, β = 108.17(1)°, monoclinic, space group P21/c, Z = 2 (2113 unique reflexions, R = 0.057). The compound forms tetrameric units, in which the W atoms form a square and are linked with one another via N atoms at alternating distances (W=N 171(2), W–N 207(2), W–NCMe 238(2) pm).

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