TY - JOUR

T1 - (Isocyano Group π-Hole)⋅⋅⋅[d z2 -M II] Interactions of (Isocyanide)[M II] Complexes, in which Positively Charged Metal Centers (d 8-M=Pt, Pd) Act as Nucleophiles

AU - Katkova, S.A.

AU - Mikherdov, A.S.

AU - Kinzhalov, M.A.

AU - Novikov, A.S.

AU - Zolotarev, A.A.

AU - Boyarskiy, V.P.

AU - Kukushkin, V.

PY - 2019/6/26

Y1 - 2019/6/26

N2 - Inspection of the X-ray structures of the newly prepared trans-[M II(CNXyl) 2(DAPT) 2]Cl(BF 4) (M=Pd, Pt; Xyl=2,6-Me 2C 6H 3; DAPT=4,6-diaminopyrimidine-2(1H)-thione) complexes and the appropriate Hirshfeld molecular surface analysis allowed the recognition of the previously unknown π-hole⋅⋅⋅metal interactions between a ligated isocyano group (acting as a π-hole donor) and the positively charged d 8-Pt II and d 8-Pd II metal centers (acting as nucleophiles); this is the first identification of π-hole⋅⋅⋅metal interactions with triple-bond species. Results of DFT calculations followed by the topological analysis of the electron density distribution within the framework of Bader's theory (quantum theory of atoms in molecules, QTAIM) confirmed the presence of these contacts. The electrostatic surface potential calculations indicated that π-hole⋅⋅⋅metal contacts are formed upon interaction between the electrophilic isocyano C atom (π-hole donor) and the nucleophilic d z 2 orbital of the metal centers, which act as π-hole acceptors. Available CCDC data were processed from the perspective of the π-hole⋅⋅⋅metal interactions with isocyanide ligands, and their analysis disclosed the role of metal nucleophilicity in the corresponding π-hole acceptor ability.

AB - Inspection of the X-ray structures of the newly prepared trans-[M II(CNXyl) 2(DAPT) 2]Cl(BF 4) (M=Pd, Pt; Xyl=2,6-Me 2C 6H 3; DAPT=4,6-diaminopyrimidine-2(1H)-thione) complexes and the appropriate Hirshfeld molecular surface analysis allowed the recognition of the previously unknown π-hole⋅⋅⋅metal interactions between a ligated isocyano group (acting as a π-hole donor) and the positively charged d 8-Pt II and d 8-Pd II metal centers (acting as nucleophiles); this is the first identification of π-hole⋅⋅⋅metal interactions with triple-bond species. Results of DFT calculations followed by the topological analysis of the electron density distribution within the framework of Bader's theory (quantum theory of atoms in molecules, QTAIM) confirmed the presence of these contacts. The electrostatic surface potential calculations indicated that π-hole⋅⋅⋅metal contacts are formed upon interaction between the electrophilic isocyano C atom (π-hole donor) and the nucleophilic d z 2 orbital of the metal centers, which act as π-hole acceptors. Available CCDC data were processed from the perspective of the π-hole⋅⋅⋅metal interactions with isocyanide ligands, and their analysis disclosed the role of metal nucleophilicity in the corresponding π-hole acceptor ability.

KW - density functional calculations

KW - isocyanide ligands

KW - metal interactions

KW - noncovalent interactions

KW - QTAIM calculations

KW - ENERGY

KW - VAN

KW - EXPONENT BASIS-SETS

KW - NONCOVALENT INTERACTIONS

KW - DENSITY FUNCTIONALS

KW - ISOCYANIDE COMPLEXES

KW - PLATINUM(II)

KW - LUMINESCENT

KW - COMPACT EFFECTIVE POTENTIALS

KW - EFFICIENT

UR - http://www.scopus.com/inward/record.url?scp=85066501582&partnerID=8YFLogxK

UR - http://www.mendeley.com/research/isocyano-group-%CF%80holedz2-mii-interactions-isocyanidemii-complexes-positively-charged-metal-centers-d8

U2 - 10.1002/chem.201901187

DO - 10.1002/chem.201901187

M3 - Article

VL - 25

SP - 8590

EP - 8598

JO - Chemistry - A European Journal

JF - Chemistry - A European Journal

SN - 0947-6539

IS - 36

ER -