Crystal and molecular structures of cis- and trans-dichlorobis(cyclobutylamine-N)platinum(II), PtCl2(C4H7NH2)2, and some comments on the conversion of cis to trans

Lock, C. J. L.; Zvagulis, M.

doi:10.1021/ic50220a042

Cited by 36 publications

(13 citation statements)

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“…The Pt-Cl bonds [2.299 (2) and 2.296 (2)A] and the Pt-N bonds [2.041 (6) and 2.053 (6)A] are normal and agree well with published values found in trans-aminochloroplatinum(II) compounds (Rochon, Kong & Melanson, 1984;Lock & Zvagulis, 1981). The two trans organic ligands are arranged so that one ligand is above the platinum plane, while the second is below the plane.…”

Section: Trans-bis(tert-butylamine)dichloroplatinum(ii)supporting

confidence: 78%

“…All the angles are close to the tetrahedral values (107-112°). The angles around the bonded N atoms [Pt-N-C = 122.9 (5) and 123.1 (5)°1 are quite far from the tetrahedral value, but similar values (113-122 °) have been observed for these types of compounds (Rochon, Kong & Melanson, 1984;Lock & Zvagulis, 1981;Rochon & Melanson, 1982).…”

Section: Trans-bis(tert-butylamine)dichloroplatinum(ii)supporting

confidence: 58%

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trans-Bis(tert-butylamine)dichloroplatinum(II), C8H22Cl2N2Pt

Melanson¹,

Rochon²

1985

Acta Crystallogr C

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Section: Trans-bis(tert-butylamine)dichloroplatinum(ii)supporting

confidence: 78%

Section: Trans-bis(tert-butylamine)dichloroplatinum(ii)supporting

confidence: 58%

trans-Bis(tert-butylamine)dichloroplatinum(II), C8H22Cl2N2Pt

Melanson¹,

Rochon²

1985

Acta Crystallogr C

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“…The occupancy factors were then fixed at 0.415, 0.585, 0.386, and 0.614 for 0(1), 0(11), 0(2), and 0(2'), respectively, and the thermal parameters refined. An isotropic secondary-extinction correction (7) The Pt-N bond lengths (2.071(7) and 2.060(8) A) are also normal and agree with published values on similar compounds (10)(11)(12). For example, the Pt-N distances in trans-[Pt(NHZ-CHI-CH2-0H) ?12] are 2.05 and 2.08 A (12).…”

Section: Trans-[pt(lh)c12] and Tran~-[pt(l'h)~cl~]supporting

confidence: 77%

Synthesis of aminoalcohol compounds of platinum and crystal structure of trans-[Pt(2-amino-2-methyl-1-propanol)₂Cl₂]

Rochon¹,

Melanson²

1984

Can. J. Chem.

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Can. J. Chem. 62, 2657 (1984. Three types of complexes, trans-[Pt(LH),Cl,], [Pt(L),I, and [Pt(LH),(SR),I where LH = NH2-C(CH3)2(CH20H) and NH2--C(CH20H)3 and L are the deprotonated ligands, have been synthesized.The crystal structure of ~~~~S-[P~(NH,-C(CH~)~CH~OH)~C~~] has been determined by X-ray diffraction methods. The crystals are monoclinic, space group P2!/c, with a = 6,282(3), b = 20,901(13), c = 10,769(10) A, f3 = 92,64(6)", and Z = 4. The structure was refined by full-matrix least-squares analysis to a conventional R factor of 0.049 and R,, = 0.042. The coordination around the platinum atom is square planar. The Pt-C1 distances are 2.306(2) and 2.309(3) A and the Pt-N bonds are 2.060(8) and 2.07 l(7) A. The hydroxyl oxygen atoms are disordered; the disorder is different for each organic ligand.The structure is stabilized by an extensive hydrogen bonding system. We have modified these methods to prepare trans-[Pt(LH),- C12] add [Pt(L),] . Compounds of NH2-C(CH3),CH20H (identified below as L'H) were also synthesized. Organic sulphur compounds R-SH (thiophenol and thiouracil) can react with [Pt(L),] or [Pt(L1),] to form [Pt(LH),(SR),] (or L'H). The three types of complexes [Pt(LH),Cl,], [Pt(L),], and [Pt(LH),(SR),] (or L'H) are believed to be trans-isomers.In order to confirm these hypotheses, we wanted to determine the crystal structures of one compound of each type. Unfortunately, up to now, only [Pt(L1H),Cl2] gave suitable crystals for X-ray diffraction. Its crystal structure is reported below. Experimental[Pt(L2)l and lPt(L1),l K,PtC14 and LH or L'H were dissolved in water in a ratio of LH : Pt > 5. The mixture was heated to 50-70°C for about 1 h and then cooled to room temperature. The light yellow precipitate was filtered, washed with water, and dried with a vacuum pump overnight. The compounds crystallized with one (L) and two (L') molecules of water (Table 1). Yield: 80%.crystals slowly formed and they were washed with water and dried under vacuum overnight. Yield: 90%.[Pt(LH), ( A set of precession photographs showed that the crystals belong to the P 2 , l c space group. The cell parameters were calculated by least-squares refinement from the setting angles of 15 centered reflections on a Syntex P1 diffractometer using graphite-monochromatized MoKa radiation. A total of 4140 independent reflections were measured with 28 < 60" by the 8-28 scan technique using MoKa radiation. The scan rate was l o (28) min-' for most reflections, but rates as high as 24" min-I were selected for strong reflections by the autocollection program. A 28 scan range of lo below Ka, and lo above Ka, was chosen. The background time to scan time ratio was 0.50. Reflections with I,,, < Crystal data

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“…The Pt7N bonds are 1.977(12) [1.95(2)] and 1.98 l(11) [1.99(2)] A. These distances are probably slightly shorter than the normal Pt-N(amine) bonds (17,18). This is the first structure determination of a compound where acetonitrile is bonded to platinum.…”

Section: Discussionmentioning

confidence: 87%

The vibrational spectra, crystal and molecular structure of bis(acetonitrile)dichloroplatinum(II)

Rochon¹,

Melanson²,

Howard-Lock³

et al. 1984

Can. J. Chem.

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Crystal and molecular structures of cis- and trans-dichlorobis(cyclobutylamine-N)platinum(II), PtCl2(C4H7NH2)2, and some comments on the conversion of cis to trans

Cited by 36 publications

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trans-Bis(tert-butylamine)dichloroplatinum(II), C8H22Cl2N2Pt

trans-Bis(tert-butylamine)dichloroplatinum(II), C8H22Cl2N2Pt

Synthesis of aminoalcohol compounds of platinum and crystal structure of trans-[Pt(2-amino-2-methyl-1-propanol)₂Cl₂]

The vibrational spectra, crystal and molecular structure of bis(acetonitrile)dichloroplatinum(II)

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Crystal and molecular structures of cis- and trans-dichlorobis(cyclobutylamine-N)platinum(II), PtCl2(C4H7NH2)2, and some comments on the conversion of cis to trans

Cited by 36 publications

References 0 publications

trans-Bis(tert-butylamine)dichloroplatinum(II), C8H22Cl2N2Pt

trans-Bis(tert-butylamine)dichloroplatinum(II), C8H22Cl2N2Pt

Synthesis of aminoalcohol compounds of platinum and crystal structure of trans-[Pt(2-amino-2-methyl-1-propanol)2Cl2]

The vibrational spectra, crystal and molecular structure of bis(acetonitrile)dichloroplatinum(II)

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Synthesis of aminoalcohol compounds of platinum and crystal structure of trans-[Pt(2-amino-2-methyl-1-propanol)₂Cl₂]