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"Sn{2,5-dimethyl-phenyl}4", also known as tetrakis(2,5-dimethylphenyl)tin, is an organotin compound with the chemical formula C16H20Sn. It is a colorless, crystalline solid that is insoluble in water but soluble in organic solvents. Sn{2,5-dimethyl-phenyl}4 is primarily used as a catalyst in various chemical reactions, such as the polymerization of olefins and the production of polyurethane foams. Due to its potential environmental and health risks, its use has been restricted in some applications. It is important to handle this chemical with care, as it can be toxic and may have adverse effects on the environment.

6746-23-2

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6746-23-2 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 6746-23-2 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 6,7,4 and 6 respectively; the second part has 2 digits, 2 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 6746-23:
(6*6)+(5*7)+(4*4)+(3*6)+(2*2)+(1*3)=112
112 % 10 = 2
So 6746-23-2 is a valid CAS Registry Number.

6746-23-2Downstream Products

6746-23-2Relevant academic research and scientific papers

Ueber Tetraaryl-Methan-Analoga in der Gruppe 14.III. Ar4Sn/Pb (Ar=Ph, p-, m-, o-Tol, 2,4-Xyl und 2,5-Xyl): Gegenueberstellung von Bindungslaengen und Winkeln, von NMR chemischen Verschiebungen und Kopplungskonstanten und von Schwingungsdaten

Schneider-Koglin, Claudia,Mathiasch, Bernd,Draeger, Martin

, p. 25 - 32 (2007/10/02)

The title compounds have been synthesized Grignard reactions or pyrolysis of diplumbanes respectively.The crystal structures of m-Tol4Pb and Ph4Pb (redetermination) have been determined.All eight compounds (Ph/Tol)4(Sn/Pb) are S4 symmetric and contracted along this unique axis.The 13C-NMR chemical shifts and the couplings 1J(119Sn/207Pb-13C) as well depend additively upon the methyl substituents.The ratios 1K(207Pb-13C):1K(119Sn-13C) of the reduced coupling constants are all near to 1.61; a comparison with values from the literature for alkyl, alkenyl and alkinyl substituents is given.The ratio δ(207Pb):δ(119Sn) results in 2.28.IR (700 down to 200 cm-1) and Raman (700 down to 50 cm-1) data are given.Key words: Tin; Lead; Group 14; Vibrational data; Nuclear magnetic resonance; Crystal structure

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