Synthesis and Structural Characterization of Tin(IV)N-nitroso-N-phenylhydroxylaminato Complexes: Crystal Structures of Sn(O2N2Ph)4, Ph2Sn(O2N2Ph)2 and [Me2Sn(O2N2Ph)2]2

Chiral self-assembly of methyltin(IV)-naproxenates: Combining dative Sn–O bonds, secondary Sn⋯O interactions and C–H⋯O hydrogen bonding to make an inter-helical meander-shaped network and a cross-linked Z-shaped ribbon

“…Interestingly, in spite of these early findings only few organotin(IV)-macrocycles have been created [3][4][5][6][7][8][9][10][11][12][13][14][15][16][17][18], whereas a rich structural chemistry of stannoxane and distannoxane units containing supramolecules has been emerged [19][20][21][22][23][24][25][26][27][28][29]. Our entry in the field of organotin supramolecular chemistry began in 4 [30] and dimeric [Me 2 Sn(PhN 2 O 2 ) 2 ] 2 [31]. In the solid state, the tetrameric structure of [Me 3 Sn(PhN 2 O 2 )] 4 incorporating a 20-membered Sn 4 O 8 N 8 inorganic ring is self-assembled by dative Sn-O bonds [30], even so the [Me 2 Sn(PhN 2 O 2 ) 2 ] 2 dimer is self-assembled by weaker stannoxanic SnÁ Á ÁO interactions [31].…”

“…Our entry in the field of organotin supramolecular chemistry began in 4 [30] and dimeric [Me 2 Sn(PhN 2 O 2 ) 2 ] 2 [31]. In the solid state, the tetrameric structure of [Me 3 Sn(PhN 2 O 2 )] 4 incorporating a 20-membered Sn 4 O 8 N 8 inorganic ring is self-assembled by dative Sn-O bonds [30], even so the [Me 2 Sn(PhN 2 O 2 ) 2 ] 2 dimer is self-assembled by weaker stannoxanic SnÁ Á ÁO interactions [31]. Multinuclear multidimensional 1 H, 13 C and 119 Sn NMR data indicated that these tetrameric and dimeric supramolecules are predominantly monomeric in non-coordinating solvents at room temperature, whereas a monomer « tetramer preorganisation process exists at low temperature [32].…”

Reactivity of bisthiosemicarbazones with Sn(II) and Sn(IV): The synthesis and structure of an eight-coordinate complex with two bis(thiosemicarbazone) ligands

“…This value corresponds well with a N 2 S 2 Cl 2 coordination, where the presence of chloride leads to a more negative value of the chemical shift, due to its inductive effect and also to the possibility of additional p-contribution to the Sn-Cl bond, which would shield the nucleus to a greater extent [11]. The signal observed in complex 2, À761 ppm, falls within the range of other octacoordinate tin(IV) compounds such as tetrakis(tropolonato)tin(IV) [d = À793.1 ppm], tetrakis (1-pyrrolecarbodithiolato)-tin(IV) [d = À729.2 ppm] and tetrakis(N-nitroso-N-phenyl-hydroxylaminato)tin(IV) [d = À747.9 ppm] [12].…”

Preparation and structural studies on diorganotin(IV) complexes of N-nitroso-N-phenylhydroxylaminates

“…Recently, one of us reported the synthesis and structural characterisation of organotin(IV) cupferronato complexes, such as [Me 3 Sn(cupf)] 4 [5], Ph 2 Sn(cupf) 2 [6], [Me 2 Sn (cupf) 2 ] 2 [3]. It was found that, depending on the number (2,3) and the nature (Me, Ph) of the organic substituents at the tin(IV) atom, the cupferronato anion displays various coordination patters in these molecules, chelating (Scheme 2a), bridging (Scheme 2b), and bridging chelating (Scheme 2c).…”

“…It was found that, depending on the number (2,3) and the nature (Me, Ph) of the organic substituents at the tin(IV) atom, the cupferronato anion displays various coordination patters in these molecules, chelating (Scheme 2a), bridging (Scheme 2b), and bridging chelating (Scheme 2c). As a consequence, the central tin(IV) atom assumes a penta-, hexa-or hepta-coordinate state, respectively, and the resulting complexes display different coordination geometries at the central tin(IV) atom [5][6][7]. Bridging chelating coordination of the cupferronato ligand to Me 2 Sn(IV) 2+ cation gives the dimeric species (Scheme 2c) [6], whereas a bridging coordination to Me 3 Sn(IV) + affords the tetrameric complex (Scheme 2b) [5].…”