Mononuclear metallacyclic silver(I) complexes of third generation bis(1-pyrazolyl)methane ligands

Inorganic Chemistry
D L RegerMark D Smith

Abstract

The third-generation bis(1-pyrazolyl)methane ligands p-C(6)H(4)[CH(2)OCH(2)CH(pz)(2)](2) (L(p), pz = pyrazolyl ring) and m-C(6)H(4)[CH(2)OCH(2)CH(pz)(2)](2) (L(m)) have been synthesized by the reaction of (pz)(2)CHCH(2)OH with NaH followed by alpha,alpha'-dibromo-p-xylene or alpha,alpha'-dibromo-m-xylene. The reaction of L(p) with AgBF(4), AgPF(6), and AgO(3)SCF(3) yields the new compounds {Ag[p-C(6)H(4)(CH(2)OCH(2)CH(pz)(2))(2)]}BF(4), {Ag[p-C(6)H(4)(CH(2)OCH(2)CH(pz)(2))(2)]}PF(6), and {Ag[p-C(6)H(4)(CH(2)OCH(2)CH(pz)(2))(2)]}O(3)SCF(3), respectively. A similar reaction of L(m) with AgBF(4) and AgPF(6) yields {Ag[m-C(6)H(4)(CH(2)OCH(2)CH(pz)(2))(2)]}BF(4) and {Ag[m-C(6)H(4)(CH(2)OCH(2)CH(pz)(2))(2)]}PF(6). These compounds were crystallized from both acetone and acetonitrile to yield nine crystalline forms of (LAg)(+) that differ in counterion and solvent of crystallization. In all complexes, the four pyrazolyl rings of the ligand chelate a single silver(I) cation in a distorted tetrahedral environment to form mononuclear metallacycles. This arrangement has not previously been observed with the analogous ligands based on tris(1-pyrazolyl)methane units and is unique because of the ring sizes (16-member rings in L(m) and 17-memb...Continue Reading

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Citations

Nov 23, 2018·Dalton Transactions : an International Journal of Inorganic Chemistry·John B CoultonRadu F Semeniuc
Aug 13, 2009·Dalton Transactions : an International Journal of Inorganic Chemistry·Guillermo A Santillan, Carl J Carrano
May 29, 2014·Physical Chemistry Chemical Physics : PCCP·Miguel Ponce-Vargas, Alvaro Muñoz-Castro
Oct 10, 2014·Dalton Transactions : an International Journal of Inorganic Chemistry·Niranjan DehurySrikanta Patra
Jan 24, 2018·Inorganic Chemistry·James R GardinierSergey V Lindeman

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