Crystal and molecular structure of trans*-chloro(L-prolinato-N*,O)((+)-. cap alpha. -methylbenzylamine-N*)platinum(II) (Pt(MBA)9L-pro)Cl)

Journal Article · Mon Dec 01 04:00:00 EST 1986 · Sov. J. Coordinat. Chem.; (United States)

OSTI ID:6158255

Minacheva, L Kh; Sakharova, V G; Sadikov, G G; Zefirov, Yu V; Porai-Koshits, M A; Slyudkin, O P

An x-ray diffraction analysis (lambdaMo, 4158 reflections, anisotropic least-squares method, R = 0.041) of (Pt(MBA)(L-pro)Cl), where L-pro denotes the anion of L-proline, and MBA denotes ..cap alpha..-methylbenzylamine, has been carried out. The crystals are monoclinic: a = 8.070, b = 23.298, c = 8.369 A,..beta.. = 99.83/sup 0/, Z = 4, space group P2/sub 1/. The crystal contains two crystallographically independent molecules (I and II) of identical composition and similar configuration. The corners of the squares around the Pt atoms in molecules I and II are occupied by the N and O atoms of a proline ligand with bidentate coordination, a Cl atom (in the trans position to the O atom), and the N atom of the MBA ligand. The mean linear parameters of molecules I and II are: Pt-Cl = 2.292, Pt-O = 2.010, and Pt-N = 2.06 A. The chelate rings in complexes I and II have the form of an envelope, the point of whose flap is occupied by an N atom (..delta..N = 0.50 A on the average). The conformation of the pyrrolidine rings in complexes I and II is also on envelope with the C/sub delta/ atom on the flap (..delta..C = 0.59 A on the average). Complexes I and II are joined to form pseudodimers by two H bonds of the N-H...Cl type (H...Cl = 2.39 and 2.37 A; the N-H...Cl angles are equal to 142.2 and 162.7/sup 0/). The pseudodimers form layers parallel to the (010) plane by means of two H bonds of the N-H...O type (H...O = 1.99 and 2.00 A; the N-H...O angles are equal to 146.5 and 148.3/sup 0/).

• Research Organization: N. S. Kurnakov Institute of General and Inorganic Chemistry, USSR
• OSTI ID: 6158255
• Journal Information: Sov. J. Coordinat. Chem.; (United States), Journal Name: Sov. J. Coordinat. Chem.; (United States) Vol. 12:2; ISSN SJCCD
• Country of Publication: United States
• Language: Russian

Related Subjects

36 MATERIALS SCIENCE
360602 -- Other Materials-- Structure & Phase Studies
37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400201* -- Chemical & Physicochemical Properties
AMINES
AMINO ACIDS
AZOLES
BOND ANGLE
BOND LENGTHS
CARBOXYLIC ACIDS
CATALYTIC EFFECTS
CHELATES
CHEMICAL BONDS
COHERENT SCATTERING
COMPLEXES
COMPUTERIZED SIMULATION
CRYSTAL LATTICES
CRYSTAL STRUCTURE
DIFFRACTION
DIMENSIONS
DISTANCE
HETEROCYCLIC ACIDS
HETEROCYCLIC COMPOUNDS
INTERATOMIC DISTANCES
LATTICE PARAMETERS
LEAST SQUARE FIT
LENGTH
MATHEMATICAL MODELS
MAXIMUM-LIKELIHOOD FIT
MOLECULAR MODELS
MOLECULAR STRUCTURE
MONOCLINIC LATTICES
NUMERICAL SOLUTION
ORGANIC ACIDS
ORGANIC CHLORINE COMPOUNDS
ORGANIC COMPOUNDS
ORGANIC HALOGEN COMPOUNDS
ORGANIC NITROGEN COMPOUNDS
PLATINUM COMPLEXES
PROLINE
PYRROLES
PYRROLIDINES
SCATTERING
SIMULATION
SPACE GROUPS
STRUCTURAL CHEMICAL ANALYSIS
TRANSITION ELEMENT COMPLEXES
X-RAY DIFFRACTION