COEXISTING PSEUDO-PLANAR AND SADDLE CONFORMERS OF TETRAMETHYL TETRAAZA[14]ANNULENE PLATINUM COMPLEXES - X-RAY CRYSTALLOGRAPHIC STUDIES ON [PT-II(TMTAA)] AND TRANS-[(PTCL2)-CL-IV(TMTAA)]

Authors
PAUL RL GHELLER SF HEATH GA HOCKLESS DCR RENDINA LM STERNS M
Citation
Rl. Paul et al., COEXISTING PSEUDO-PLANAR AND SADDLE CONFORMERS OF TETRAMETHYL TETRAAZA[14]ANNULENE PLATINUM COMPLEXES - X-RAY CRYSTALLOGRAPHIC STUDIES ON [PT-II(TMTAA)] AND TRANS-[(PTCL2)-CL-IV(TMTAA)], Journal of the Chemical Society. Dalton transactions, (22), 1997, pp. 4143-4145
Citations number
23
Journal title
Journal of the Chemical Society. Dalton transactions → ACNP
ISSN journal
03009246
Issue
22
Year of publication
1997
Pages
4143 - 4145
Database
ISI
SICI code
0300-9246(1997):22<4143:CPASCO>2.0.ZU;2-I
Abstract
Orange platelets of [Pt(tmtaa)], where H(2)tmtaa = drodibezo[b,i][1,4, 8,11]-tetraazacyclotetradecine, show the expected 'pseudo-planar' cent rosymmetric macrocyclic conformation but red needles of another [Pt(tm taa)] modification and purple trans-[PtCl2(tmtaa)] both show saddle-fo rm co-ordination with the metal ion only 0.046(1) Angstrom (Pt2+) or 0 .024(5) Angstrom (Pt4+) above the N-4 plane; X-ray powder diffraction reveals similar dimorphism for [Pd(tmtaa)] but not for [Ni(tmtaa)].