TY  - JOUR
A1  - Sperlich, Eric
A1  - Köckerling, Martin
T1  - [Nb6Cl14(pyrazine)(4)], a versatile precursor for ligand-supported hexanuclear niobium cluster compounds: synthesis, characterization, follow-up reactions, and intermolecular interactions
JF  - Inorganic chemistry
N2  - The compound [Nb6Cl14(pyrazine)(4)]center dot 2CH(2)Cl(2) (1) was investigated for its suitability as a starting compound for new ligand-supported hexanuclear niobium cluster compounds. The synthesis, stability to air and increased temperature, solubility and usability for subsequent reactions of 1, and purification and separation of the reaction products are discussed. The compounds with cluster units [Nb6Cl14L4], where L = iso-quinoline N-oxides (2), 1,1-dimethylethylenediamines (3), or thiazoles (4), and [Nb6Cl14(PEt3)(3.76)(Et3PO)(0.24)]-[Nb6Cl14(MeCN)(4)]center dot 4MeCN (5) are presented as follow-up products. The crystal structures of compounds 1-5 are analyzed, and the structures are discussed with respect to their intraand intermolecular bonding situations and crystal packing. In addition to hydrogen bonds and pi-pi interactions, the appearance of chalcogen and halogen bonds and lone pair-pi interactions between Nb-6 cluster units was observed for the first time.
KW  - Cluster chemistry
KW  - crystals
KW  - ligands
KW  - molecules
KW  - transition metals
Y1  - 2022
U6  - https://doi.org/10.1021/acs.inorgchem.1c03109
SN  - 0020-1669
SN  - 1520-510X
VL  - 61
IS  - 5
SP  - 2409
EP  - 2420
PB  - American Chemical Society
CY  - Washington
ER  -