New Ag^I Organometallic Coordination Polymers and M^II (M = Cu^II and Co^II) Inorganic Supramolecular Complexes Generated from New Fulvene‐Type Ligands

Abstract

Two novel fulvene-type organic ligands L1 and L2 have been synthesized by aroylation reaction of substituted cyclopentadienyl anions. L1 crystallized in the monoclinic space group P2 1 , a = 6.7498 (4)

Influence of the Pt→Ag Donor−Acceptor Bond and Polymorphism on the Spectroscopic and Optical Properties of Heteropolynuclear Benzoquinolateplatinum(II) Complexes

“…It seems that in both polymorphs the silver atom leans to the less crowded area, avoiding the proximity of the bulky C 6 F 5 groups (no short o -F···Ag contacts are found), and contacts (η 1 -type) with the metalated C atoms of the bzq ligands (Ag−C(23) = 2.420(6) Å in 3a and 2.418(5) Å in 3b , Ag−C(48) = 2.626(6) Å in 3a and 2.538(5) Å in 3b ) in such a way that the shorter Ag−C distance correlates with the longer Pt−Ag one. Silver is known to have a remarkable affinity for some aromatic π-donor systems. − The η 1 and η 2 coordination modes are found to be the most usual, with the Ag−C lines almost perpendicular to the plane of the aromatic rings, which are frequently arranged in parallel layers in the crystal structure. , In complexes 3a and 3b , the aromatic ring forms part of the bzq ligand that is bonded to Pt, and as a consequence, the Ag−C lines are not perfectly perpendicular to the corresponding aromatic ring, but form angles in the range 22.8(1)−30.5(1)° with the corresponding bzq planes. These η 1 -Ag−C interactions are important and, along with the Pt→Ag bonds, clearly contribute to fulfillling the electron requirements of the acidic Ag(I) center.…”

“…Silver is known to have a remarkable affinity for some aromatic π-donor systems. [39][40][41][42][43][44][45][46][47][48][49][50][51][52] The η 1 and η 2 coordination modes are found to be the most usual, with the Ag-C lines almost perpendicular to the plane of the aromatic rings, which are frequently arranged in parallel layers in the crystal structure. 39,44 In complexes 3a and 3b, the aromatic ring forms part of the bzq ligand that is bonded to Pt, and as a consequence, the Ag-C lines are not perfectly perpendicular to the corresponding aromatic ring, but form angles in the range 22.8(1)-30.5(1)°with the corresponding bzq planes.…”

Studies on the red sweat of the Hippopotamus amphibius

“…The position of the proton between the two oxygen atoms is important in organic chemistry, because when the proton lies on one side, it means tautomerism, and when it lies in the center of two oxygens, it means resonance [7]. The position of the proton is still unclear; however, comparing some compounds having a similar system, the position of the proton would be on one side [8][9][10][11][12][13] (Fig. 6).…”

A two-dimensional network formed by self-associating silver(I) perchlorate with 3-[4-(2-thienyl)-2H-cyclopenta[d]pyridazin-1-yl]benzonitrile

“…In principle, the abundant coordination chemistry of fulvene could afford us an excellent opportunity to construct organic-inorganic hybrid materials that might be different in topology and physical and chemical properties from those based on common organic spacers. A continuing project in our laboratory has been the development of organometallic coordination frameworks generated from conjugated symmetric and unsymmetric fulvene ligands, which can adopt either cis or trans conformations to bind the soft acid Ag I ion through not only the terminal -CN and furan or thiophene functional groups but also the fulvene C atoms into organometallic coordination polymers or discrete complexes (Dong et al, 2002(Dong et al, , 2003Dong, Jin et al, 2004;Dong, Wang et al, 2004;Wang et al, 2005). In this paper, we report a novel two-dimensional network which was formed by the self-assembly reaction of a new fulvene ligand with silver perchlorate.…”