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161994-85-0

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161994-85-0 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 161994-85-0 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,6,1,9,9 and 4 respectively; the second part has 2 digits, 8 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 161994-85:
(8*1)+(7*6)+(6*1)+(5*9)+(4*9)+(3*4)+(2*8)+(1*5)=170
170 % 10 = 0
So 161994-85-0 is a valid CAS Registry Number.

161994-85-0SDS

SAFETY DATA SHEETS

According to Globally Harmonized System of Classification and Labelling of Chemicals (GHS) - Sixth revised edition

Version: 1.0

Creation Date: Aug 17, 2017

Revision Date: Aug 17, 2017

1.Identification

1.1 GHS Product identifier

Product name carbanide,cyclopenta-1,3-diene,9H-fluoren-9-ide,silylidenezirconium,dichloride

1.2 Other means of identification

Product number -
Other names [Me2Si(1H-inden-1-yl)(9-fluorenyl)]ZrCl2

1.3 Recommended use of the chemical and restrictions on use

Identified uses For industry use only.
Uses advised against no data available

1.4 Supplier's details

1.5 Emergency phone number

Emergency phone number -
Service hours Monday to Friday, 9am-5pm (Standard time zone: UTC/GMT +8 hours).

More Details:161994-85-0 SDS

161994-85-0Downstream Products

161994-85-0Relevant articles and documents

Phosphorus-bridged metallocenes: New homogeneous catalysts for the polymerization of propene

Schaverien, Colin J.,Ernst, Rene,Terlouw, Wim,Schut, Peter,Sudmeijer, Olof,Budzelaar, Peter H.M.

, p. 245 - 256 (2008/10/09)

The synthesis of a new class of metallocenes for the syndiospecific, aspecific and isospecific polymerization of propene is reported. This has been achieved by the incorporation of a phosphorus linking the cyclopentadienyl-type rings. The catalyst precursors, syndiospecific PhP(fluorenyl-Cp)ZrCl2 (2), aspecific PhP(fluorenyl)2ZrCl2 (4), and isospecific PhP(indenyl)2ZrCl2 (5), RP(2-Me,4-Ph-indenyl)2ZrCl2 (R = Ph (6); R = (i)Pr (7)) were prepared. Compound 2, after activation by methylaluminoxane (MAO), in LIPP at 67°C affords syndiotactic polypropene (s-PP) with an activity of 155 kg s-PP/g Zr · h. The physical properties of the s-PP (stereoregularity and molecular weight) are similar to that of conventional carbon-bridged systems. Ab initio calculations on model compounds assisted in rationalizing the high syndiospecificity of 2 in contrast to the much poorer stereoregularity of closely related Me2Si(fluorenyl-Cp)ZrCl2. Aspecific metallocene 4, after activation with MAO, affords high molecular weight atactic-PP, albeit with a low activity. Metallocenes 6 and 7, activated by MAO, afford isotactic polypropene (i-PP) with extremely high stereoregularity (> 98% mmmm pentads), melting points 156-160°C and molecular weights tunable in the range 250,000-1,100,000. Activities of up to 580 kg i-PP / g Zr · h for 6/MAO (LIPP, 67°C, 37000 equiv. MAO) and 1265 kg i-PP/g Zr · h for 7/MAO (LIPP, 50°C, 37000 equiv. MAO) have been obtained.

Silylene-bridged fluorenyl-containing ligands and zirconium complexes with C1 and Cs symmetry: general synthesis and olefin polymerization catalysis

Chen, You-Xian,Rausch, Marvin D.,Chien, James C. W.

, p. 1 - 10 (2007/10/02)

A variety of new silylene-bridged fluorenyl-containing ligands has been synthesized with good yields via a convenient synthetic route.Two dimethylsilylene-bridged (η5-indenyl)(η5-fluorenyl) (1) and (η5-cyclopentadienyl)(η5-fluorenyl) (2) zirconocene dichlorides with C1 and Cs molecular symmetry have also been prepared.Upon activation with methyl aluminoxane, the former produced a polypropylene of high molecular weight, but with low activity and isotacticity.The latter catalyzed non-stereospecific propylene polymerization without any zyndiotactic tendency, but with 40 and 20 times greater ethylene and propylene activity respectively than the former catalytic system.Keywords: Zirconium; Olefin; Polymerization catalysis; Fluorenyl ligands

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