Metal ion-aromatic complexes. XIII. Trigonal-planar silver(I) in the structure of indene silver perchlorate

The crystal structure of 3'-(β-methylaminoethyl)spiro(cyclopentane-1,1'-indene) hydrochloride

“…The deviations of the atoms from these planes are given in Table 3. As in earlier determinations of indene derivatives (Andrianov, Kemme, Tarnopol'skii & Shibaeva, 1969;Rodesiler, Hall Griffit & Amma, 1972;Dreissig, Luger, Rewicki & Tuchscherer, 1973) the indene ring system is planar within the limits of error. However, the exocyclic atom C(14) is 0.06 A out of the ring plane.…”

A double sandwich silver(I) polymer with 1,1′-bis(diethyldithiocarbamate)-ferrocene

“…The Ag-C distances, 2.972(8) and 3.027(8) Å, are only slightly longer than the longest found in complexes of silver(i) with aromatic systems (2.47-2.92 Å). [11][12][13][14][15][16][17][18][19][20] Scheme 1 It is also noteworthy that aromatic silver(i) complexes usually show an asymmetry in their Ag-C interactions (as do copper complexes). 21,22 According to Mulliken's model 23 the most favourable position for a silver ion is at the point of highest p-electron density, directly above one of the carbon atoms of the ring.…”

Synthesis and Molecular Structures of the Cationic Silver Complexes of the Polycondensed Aromatics Fluorene, Pseudorubrene, and Truxene

“…Examples are acenaphthylene, [22] 9,9-bifluoreneylidene, [23] benzo[e]acephenanthrylene, [24] decacyclene, and fluoranthene [11] or indene. [25] Especially, fluorene derivatives have been studied for their coordination behavior towards Ag I , for example, as efficient π-prismands, [7,26] in coordination frameworks with Ag 3 /Ag 4 arrangements, [14] and as ligands in molecular Ag n clusters of moderate size (n = 4, 6, 8, 12). [15] Coordination Behavior of Fluorene towards Ag I…”

“…To the best of our knowledge, there is only a very small number of examples reporting complexation of π‐systems with conjugated five‐ and six‐membered rings. Examples are acenaphthylene, 9,9‐bifluoreneylidene, benzo[ e ]acephenanthrylene, decacyclene, and fluoranthene or indene . Especially, fluorene derivatives have been studied for their coordination behavior towards Ag I , for example, as efficient π‐prismands,, in coordination frameworks with Ag 3 /Ag 4 arrangements, and as ligands in molecular Ag n clusters of moderate size ( n = 4, 6, 8, 12) …”

“…Interestingly, the same situation holds true in the respective mismatch of the two HOMOs for indene (L Ind ) [36] and is reflected by a similar coordination behavior of Ag I in the respective complex [(L Ind )Ag 2 (ClO 4 )] 2 . [25] Coordination Behavior of Pseudorubrene towards Ag I…”