Detail of "16919-46-3"

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CAS Number:
16919-46-3
Name:
Tin,dichlorobis(2,4-pentanedionato-kO2,kO4)-
Molecular Structure:
Formula:
C10H14 Cl2 O4 Sn
Molecular Weight:
387.83
Synonyms:
Tin,dichlorobis(2,4-pentanedionato)- (6CI,7CI,8CI); Tin,dichlorobis(2,4-pentanedionato-O,O')-; Tin, dichlorobis(2,4-pentanedionato-kO,kO')- (9CI); Bis(acetylacetonato)dichlorotin;Dichlorobis(2,4-pentanedionato-O,O')tin; NSC 254044
Density:
g/cm³
Melting Point:
204-206 °C(lit.)
Boiling Point:
202-3°C
Flash Point:
43.1°C
Hazard Symbols:
Risk Codes:
20/21/22-34-40
Safety:
Hazard Codes Xn
Risk Statements 20/21/22-34-40
Safety Statements 26-27-28-36/37/39
RIDADR UN 3261 8/PG 2

WGK Germany 3

TSCA No
HazardClass 6.1
PackingGroup III
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Dynamic stereochemistry of cis-octahedral bis(: Dynamic stereochemistry of cis-octahedral bis(.beta.-diketonato) complexes. Finocchiaro, Paolo; Librando, Vito; Maravigna, Pietro; Recca, Antonino (Fac. Eng., Univ. Catania, Catania, Italy). J. 55410-78-1 and 16919-46-3 are cas registry numbers. These chemicals are also mentioned in this article. Organomet. Chem., 125(2), 185-97 (English) 1977. CODEN: JORCAI. DOCUMENT TYPE: Journal CA Section: 78 (Inorganic Chemicals and Reactions) Section cross-reference(s): 67 The dynamic aspects of the stereoisomerizations of some bis(.beta.-diketonato) complexes were investigated with the aid of permutational anal. and topol. representations. The anal. indicates that the lowest energy rearrangement mode (M4) occurring in such complexes, and involving a reversal of the helicity of the structure, is permutationally equiv. to the "one-ring-flip" mechanism of diaryl derivs. of the type Ar2ZX, which are shown to be stereochem. correspondent to the bis-chelate mols. The activation energies assocd. with such rearrangements were detd. by variable-temp. NMR studies. Only for bis(acetylacetonato)bis(triphenylphosphine)ruthenium(II) is the activation barrier high enough to allow resoln. of the 2 enantiomers at ambient temps. .