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The chemical compound "η5-pentamethylcyclopentadienyl(1,2,3,4-tetramethylfulven)ruthenium tetrafluoroborate" is a complex organometallic compound consisting of a ruthenium metal center coordinated to two organic ligands. The first ligand is a pentamethylcyclopentadienyl (Cp*) group, which is a cyclopentadienyl ring with five methyl groups attached to it, providing electron density and stability to the complex. The second ligand is a tetramethylfulvene (Cp) group, which is a cyclopentadienyl ring with four methyl groups and a double bond between two carbon atoms, further stabilizing the complex. The ruthenium center is also coordinated to a tetrafluoroborate counterion (BF4-), which balances the overall charge of the complex. η5-pentamethylcyclopentadienyl(1,2,3,4-tetramethylfulven)ruthenium tetrafluoroborate is of interest in organometallic chemistry and catalysis due to its unique electronic properties and potential applications in various chemical transformations.

99898-37-0

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99898-37-0 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 99898-37-0 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 9,9,8,9 and 8 respectively; the second part has 2 digits, 3 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 99898-37:
(7*9)+(6*9)+(5*8)+(4*9)+(3*8)+(2*3)+(1*7)=230
230 % 10 = 0
So 99898-37-0 is a valid CAS Registry Number.

99898-37-0Relevant academic research and scientific papers

PERMETHYLMETALLOCENE. V. REAKTIONEN DES DECAMETHYLRUTHENICENIUM-KATIONS

Koelle, U.,Grub, J.

, p. 133 - 140 (1985)

The novel decamethylruthenicenium cation + undergoes a facile deprotonation/oxidation reaction to yield a tetramethylfulvene cation *C5Me4-exo-CH2>+ (Cp*=η5-C5Me5), +, together with neutral 1.The reaction is promoted by weakly coordinating Lewis bases such as Cl-. + is also generated by hydride abstraction from 1 with Ph3CBF4.Addition of nucleophiles Nu to + gives neutral complexes RuCp*C5Me4CH2Nu (Nu=R2NH, ROH or OH-).The mechanism of formation of + is discussed with reference to electrochemically evaluated redox properties of the species involved.

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