Isomorphism in monomeric 1:3 complexes of silver(I) salts with tri-p-tolylphosphine

Abstract

Reaction of silver(I) salts with three equivalents of tri-p-tolylphosphine in CH(3)CN resulted in a series of isomorphous complexes [AgX{P(4-MeC(6)H(4))(3)}(3)] (X = Br, SCN, ClO(4)). These complexes all crystallize in the orthorhombic space group Pna2(1). The complexes with X = Br, SCN are distorted tetrahedral around the silver(I) atom, whereas the ClO(4)(-) complex is distorted trigonal planar around the silver. The new complexes are compared with each other using r.m.s. overlay calculations as well as half-normal probability plot analysis and with the previously reported isomorphous chloride, bromide as well as the non-isomorphous iodide complexes.

Oligophosphine-thiocyanate Copper(I) and Silver(I) Complexes and Their Borane Derivatives Showing Delayed Fluorescence

“…The difference in coordination of the SCN ligand in mononuclear complexes 7 – 10 is clearly reflected by the magnitude of ∠M–E–C, which tends to approach a right angle for E = S (89°–110° for 8 and forms of 10 ) compared to the values of 166.0–175.5° for E = N in 7 and the family of 9 . This variation in bonding of the SCN anion generally complies with the literature data on d 10 [M­(SCN)­(PR 3 ) 3 ] compounds. ,, …”

“…This variation in bonding of the SCN anion generally complies with the literature data on d 10 [M(SCN)(PR 3 ) 3 ] compounds. 39,42,47…”

“…This variation in bonding of the SCN anion generally complies with the literature data on d 10 [M(SCN)(PR 3 ) 3 ] compounds. 39,42,47 In all forms of complexes 9 and 10, the tetraphosphine P 4 phosphine serves as a tridentate ligand leaving one terminal PPh 2 function unbound (Cu(1)−P(4) and Ag(1)−P(4) separations are 4.101 Å and 3.848/3.979 Å, Figure 2), analogously to their alkynyl congener [Cu(C 2 Ph)(P 4 )]. 26 The geometry of {M(P) 3 } skeletons and the structural characteristics in 7−10 (Tables S3 and S4) closely resemble those of other [M(P 3 )X] compounds.…”

Oligo-nuclear silver thiocyanate complexes with monodentate tertiary phosphine ligands, including novel ‘cubane’ and ‘step’ tetramer forms of AgSCN : PR3 (1 : 1)4

“…20 The present Ncoordinated example [(Ph 3 P) 3 AgNCS]•S, S = en (1b) was noted as 'unpublished data' in ref. 20 and is here recorded in full (together with its S = py counterpart (1a)), both representative of the triclinic solvated form; a closely-related recent analogue should be noted: [{( p-tol) 3 P} 3 Ag(SCN)](•H 2 O), 22 in which the thiocyanate is S-bound. Also isomorphous with [(Ph 3 P) 3 M-(NCS)]•S is, notably, [(Ph 3 As) 3 Ag(NCS)]• 1 2 mpy, 2, in which the solvent molecule is disposed (disordered) about a crystallographic inversion centre, the thiocyanate group now being N-, rather than S-, bound (Fig.…”

(Thiocyanato-κS)tris(triphenylphosphane-κP)silver(I)

“…In the mononuclear complex, the Ag I center is in a slightly distorted tetrahedral coordination geometry formed by one S atom from the terminal thiocyanate ligand, and three P atoms from three triphenylphosphane ligands. The Ag-S bond length of 2.6128 (3) Å is slightly shorter than in [Ag(SCN){P(4-MeC 6 H 4 ) 3 } 3 ] [2.6613 (7) Å ; Omondi et al, 2009]. The angles at the Ag I ion vary from 94.327 (10) to 117.910 (10) .…”