Triphenyl lead chloride

Structural formula
General
Surname	Triphenyl lead chloride
other names	Triphenyl lead (IV) chloride Chlorotriphenylplumban Chlorotriphenyl lead
Molecular formula	C 18 H 15 ClPb
Brief description	colorless solid
External identifiers / databases
CAS number 1153-06-6 EC number 214-572-6 ECHA InfoCard 100.013.247 Wikidata Q21099511
properties
Molar mass	473.96 g mol −1
Physical state	firmly
Melting point	207 ° C
safety instructions
GHS labeling of hazardous substances danger H and P phrases H: 302 + 332-360Df-373-410 P: 201-261-273-304 + 340 + 312-308 + 313-501
As far as possible and customary, SI units are used. Unless otherwise noted, the data given apply to standard conditions .

Triphenyl lead chloride is a chemical compound from the group of organic lead compounds .

Extraction and presentation

Triphenyl lead chloride can be obtained by reacting the corresponding tetraorganyl compound tetraphenyl lead with alcoholic hydrogen chloride :

${\displaystyle \mathrm {Pb(C_{6}H_{5})_{4}+\ HCl{\xrightarrow {Ethanol}}\ ClPb(C_{6}H_{5})_{3}\ +\ C_{6}H_{6}} }$

On a laboratory scale, triphenyl lead chloride is also obtained in good yield by reacting tetraphenyl lead with a four-fold excess of ammonium chloride at 170 ° C.

properties

Physical Properties

Triphenyl lead chloride crystallizes as colorless needles monoclinically in the space group P 2 ₁ / c (space group no.14 ) with the lattice parameters a = 12.214 (3) Å , b = 13.031 (3) Å, c = 10.406 (3) Å and β = 101.35 (5) ° and four units per unit cell . The molecules form a chain-like coordination polymer with a hardly distorted trigonal bipyramidal coordination of the lead atom with bond angles of 119.7 ° (C-Pb-C) and 179.5 ° (Cl-Pb-Cl ').

Chemical properties

By hydrolysis of Triphenylbleichlorid with potash obtained Triphenylbleihydroxid :

${\displaystyle \mathrm {ClPb(C_{6}H_{5})_{3}+\ KOH{\xrightarrow {Ethanol}}\ HOPb(C_{6}H_{5})_{3}\ +\ H_{2}O} }$

Mixed lead organs are obtained by reaction with alkyl magnesium bromides.

${\displaystyle \mathrm {ClPb(C_{6}H_{5})_{3}+\ RMgBr{\xrightarrow {}}\ RPb(C_{6}H_{5})_{3}\ +\ MgClBr\ \ R=organischerRest} }$

use

Triphenyl lead chloride is an intermediate in the manufacture of diphenyl lead dichloride .

Individual evidence

1. ↑ ^{a b c d e} data sheet Chlorotriphenyllead (IV) from Sigma-Aldrich , accessed on September 22, 2018 ( PDF ).
2. ^ Bernard Jousseaume: Organometallic Synthesis and Chemistry of Tin and Lead Compounds . In: Microchimica Acta . tape 109 , no. 1-4 , 1992, pp. 5–12 , doi : 10.1007 / BF01243203 (English).
3. ↑ ^{a b} G. Bähr: For the rational representation of organometallic bases. I. Extraction of triphenyl lead hydroxide from tetraphenyl lead . In: Journal of Inorganic Chemistry . tape 253 , 1947, pp. 330-336 , doi : 10.1002 / zaac.19472530510 .
4. ↑ Erich Krause, Otto Schlöttig: Representation of a crystallizable organic lead compound with four different ligands . In: Reports of the German Chemical Society (A and B Series) . tape 58 , no. 2 , February 11, 1925, p. 427 , doi : 10.1002 / cber.19250580242 .
5. ↑ H. Preut, F. Huber: The crystal and molecular structures of triphenyl lead chloride and triphenyl lead bromide . In: Journal of Inorganic and General Chemistry . tape 435 , no. 1 , November 1977, p. 234-242 , doi : 10.1002 / zaac.19774350131 .
6. ^ F. Just: Chemisches Colloquium der Universität Berlin . In: Angewandte Chemie . tape 59 , no. 5-6 , May 1947, pp. 176 , doi : 10.1002 / anie.19470590510 (German: Studies on organic lead and organotin compounds .).