Synthesis and X‐ray Crystal Structures of Homoleptic Zinc Complexes Containing Monoanionic β‐Ketoiminato and Bis­(thiophosphinoyl)methanediide Ligands

Abstract

Homoleptic zinc complexes of the type L 2 Zn containing monoanionic β-ketoiminate and bis(thiophosphinoyl)methanide substituents were synthesized in almost quantitative yield by reaction

Main‐Group‐Metal and Transition‐Metal Complexes Containing Fluorinated β‐Diketiminate Ligands

“…Our interest in complexes containing N , N′ ‐ and N ,O‐chelating amidinate, β‐diketiminate, β‐ketoiminate, and ureate ligands prompted us to evaluate the influence of electron‐withdrawing substituents in β‐diketimines on their electronic nature, leading to the synthesis of β‐diketimine LH 1 {L = HC[C(CF 3 )NC 6 F 5 ] 2 }. 1 was further used as an electron‐poor substituents in main‐group metal (LAlMe 2 4 ) and transition‐metal complexes [LZnEt 5 , LCu(C 6 H 6 ) 6 and LCuCO 7 ].…”

Systematic molecular engineering of Zn-ketoiminates for application as precursors in atomic layer depositions of zinc oxide

“…8 In order to identify the origin of the variable thermal properties of different Zn-ketoiminates, we adopted the principle of molecular engineering and systematically varied the side chain of ketoimine ligands [(RN)-2-penten-2-ol-4-imine] at the R position. Seven different Zn-ketoiminates, namely, bis(N-(3′-dimethylaminopropyl)-2-penten-2-on-4-iminate) zinc(II) [Zn(dapki) 2 ], bis(N-(3′-dimethylaminoethyl)-2-penten-2-on-4-iminate) zinc(II) [Zn(daeki) 2 ], 10 bis(N-(3′-ethoxypropyl)-2penten-2-on-4-iminate) zinc(II) [Zn(epki) 2 ], bis(N-(2′-ethoxyethyl)-2-penten-2-on-4-iminate) zinc(II) [Zn(eeki) 2 ], bis(N-(3′methoxypropyl)-2-penten-2-on-4-iminate) zinc(II) [Zn(mpki) 2 ], 8 bis(N-(2′-methoxyethyl)-2-penten-2-on-4-iminate) zinc(II) [Zn (meki) 2 ], 8 and bis(N-( n propyl)-2-penten-2-on-4-iminate) zinc(II) [Zn( n pki) 2 ] 9 were synthesized. The solid state structures were analysed and correlated with the thermal properties in solution and as solids.…”

Synthesis and X‐ray Crystal Structures of β‐Ketoiminate Complexes

“…The Zn–N bond lengths toward the coordinating amine donor group [ 2 2.1849(14), 2.1648(14) Å; 4 2.2031(10) Å] are also comparable. In contrast, the side‐arm donor groups of the homoleptic complexes (L1 Do1 ) 2 Zn and (L1 Do4 ) 2 Zn do not coordinate to the zinc atom, since the tetrahedral coordination arrangement of the central zinc atom is already achieved by coordination of two N,O‐chelating β‐ketoiminate ligands. In contrast, the zinc atom in the related homoleptic zinc complex (L4 Do1 ) 2 Zn [L4 Do1 = {(OC(Ph)C(H)C(Me)NCH 2 CH 2 Do)}], in which one Me group of the β‐ketoiminate ligand is replaced by a Ph group, is additionally coordinated by one side‐arm donor group, resulting in a distorted trigonal‐bipyramidal coordination arrangement …”